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at91: Support PMC clock bindings

PATCH Applied Sam Ravnborg 4 participants 15 messages Feb 24, 2019 – Feb 26, 2019

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#0 lore raw

v4 cover at91: Support PMC clock bindings

Hi all.

The following patchset add supports for the PMC clk bindings for at91.
The patchset was tested on:
- at91sam9264ek - DT enabled
- sama5d4-xplained - non DT

Ladislav and Ahmad did some additional testing on the boards they have available.

Please await feedback from Ahmad and Ladislav before applying to master.

The patchset includes sama5d2.c which is not used today. I have a sama5d27-som1-ek board that I hope to find time to work with and then this will be needed.

Patch was made on top of barebox master:
3c2dee2e7d62a32ba85f7bf94bb7abf5b4f09dab ("doc: bootchooser: add retry handling to algorithm description")

On stray patch sneaked in - to kill a warning.

The patchset triggers some checkpatch warnings:
- SPDX, the barebox variant of checkpatch is missing support for these
- Too long lines. As code is copied from the kernel I left them as-is

Comments/review/testing very welcome!
Note: I am at Embedded World Nürenberg for a few days, so no swift repsonses to feedback/comments.

v4:
- added dt-compat required by sama5d3 (Ahmad)
- added syscon_regmap_lookup_by_compatible (Ahmad)
- Rebased on master
- Added SOC_SAMA5D2 - as it is used later Not used for now, but needed later

v3:
- fixed build breakage in sama5d4 and clk-h32mx
- added Tested-by: Ladislav Michl <[email protected]> to relevant patches Not all, as only a subet was covered by the test

v2:
- Split up in smaller patches
- Fix builds in various configs
- Reworked Kconfig changes
- Fix checkpatch warnings (mostly whitespace)

v1:
- Posted to mailing list as a WIP patch

Sam

Ahmad Fatoum (2):
regmap: Implement syscon_regmap_lookup_by_compatible()
clk: at91: add dt-compat to PMC bindings

Sam Ravnborg (9):

      arm: at91: fix at91_configure_usart6 warning
      clocksource: Do not mix depends and select for ATMEL_PIT
      arm: at91: add SOC_SAMA5{D2,D3,D4}
      clk: at91: add at91sam9260
      clk: at91: add at91sam9rl
      clk: at91: add at91sam9x5
      clk: at91: add sama5d2
      clk: at91: add sama5d4
      clk: at91: update to PMC bindings
 arch/arm/mach-at91/Kconfig              |  37 +-
 arch/arm/mach-at91/include/mach/board.h |   1 +
 drivers/clk/at91/Makefile               |   6 +
 drivers/clk/at91/at91sam9260.c          | 497 +++++++++++++++++
 drivers/clk/at91/at91sam9rl.c           | 177 ++++++
 drivers/clk/at91/at91sam9x5.c           | 315 +++++++++++
 drivers/clk/at91/clk-generated.c        | 185 ++----
 drivers/clk/at91/clk-h32mx.c            |  55 +-
 drivers/clk/at91/clk-main.c             | 112 +---
 drivers/clk/at91/clk-master.c           |  94 +---
 drivers/clk/at91/clk-peripheral.c       |  82 +--
 drivers/clk/at91/clk-pll.c              | 174 +-----
 drivers/clk/at91/clk-plldiv.c           |  27 +-
 drivers/clk/at91/clk-programmable.c     |  83 +--
 drivers/clk/at91/clk-slow.c             |  33 +-
 drivers/clk/at91/clk-smd.c              |  33 +-
 drivers/clk/at91/clk-system.c           |  42 +-
 drivers/clk/at91/clk-usb.c              |  94 +---
 drivers/clk/at91/clk-utmi.c             | 100 ++--
 drivers/clk/at91/dt-compat.c            | 961 ++++++++++++++++++++++++++++++++
 drivers/clk/at91/pmc.c                  | 248 +++++++++
 drivers/clk/at91/pmc.h                  | 169 ++++++
 drivers/clk/at91/sama5d2.c              | 342 ++++++++++++
 drivers/clk/at91/sama5d4.c              | 270 +++++++++
 drivers/clocksource/Kconfig             |   1 -
 drivers/mfd/syscon.c                    |  14 +
 include/linux/clk.h                     |   7 +
 include/mfd/syscon.h                    |   5 +
 include/soc/at91/atmel-sfr.h            |  34 ++
 29 files changed, 3220 insertions(+), 978 deletions(-)

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#1 lore raw

PATCH v4 1/11 arm: at91: fix at91_configure_usart6 warning

Add declaration to silence following warning:

arch/arm/mach-at91/sama5d4_devices.c:487:24:
warning: no previous prototype for ‘at91_configure_usart6’

---
 arch/arm/mach-at91/include/mach/board.h | 1 +
 1 file changed, 1 insertion(+)
arch/arm/mach-at91/include/mach/board.h +1 -0
index 886f81e9a..4c4b51180 100644
@@ -102,6 +102,7 @@ resource_size_t __init at91_configure_usart2(unsigned pins);
 resource_size_t __init at91_configure_usart3(unsigned pins);
 resource_size_t __init at91_configure_usart4(unsigned pins);
 resource_size_t __init at91_configure_usart5(unsigned pins);
+resource_size_t __init at91_configure_usart6(unsigned pins);
 
 #if defined(CONFIG_DRIVER_SERIAL_ATMEL)
 static inline struct device_d * at91_register_uart(unsigned id, unsigned pins)
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#2 lore raw

PATCH v4 2/11 regmap: Implement syscon_regmap_lookup_by_compatible()

In reply to Sam Ravnborg

From: Ahmad Fatoum <[email protected]>

Implement syscon_regmap_lookup_by_compatible() to simplify porting kernel code.

---
 drivers/mfd/syscon.c | 14 ++++++++++++++
 include/mfd/syscon.h |  5 +++++
 2 files changed, 19 insertions(+)
drivers/mfd/syscon.c +14 -0
index 30ed65f73..b1ff1b1ea 100644
@@ -160,6 +160,20 @@ struct regmap *syscon_node_to_regmap(struct device_node *np)
 	return syscon->regmap;
 }
 
+struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+	struct device_node *syscon_np;
+	struct regmap *regmap;
+
+	syscon_np = of_find_compatible_node(NULL, NULL, s);
+	if (!syscon_np)
+		return ERR_PTR(-ENODEV);
+
+	regmap = syscon_node_to_regmap(syscon_np);
+
+	return regmap;
+}
+
 static int syscon_probe(struct device_d *dev)
 {
 	struct syscon *syscon;
include/mfd/syscon.h +5 -0
index 63b893e4a..902f9fa2f 100644
@@ -21,6 +21,7 @@ void __iomem *syscon_base_lookup_by_pdevname(const char *s);
 void __iomem *syscon_base_lookup_by_phandle
 	(struct device_node *np, const char *property);
 struct regmap *syscon_node_to_regmap(struct device_node *np);
+struct regmap *syscon_regmap_lookup_by_compatible(const char *s);
 #else
 static inline void __iomem *syscon_base_lookup_by_pdevname(const char *s)
 {
@@ -37,6 +38,10 @@ static inline struct regmap *syscon_node_to_regmap(struct device_node *np)
 {
 	return ERR_PTR(-ENOSYS);
 }
+static inline struct regmap *syscon_regmap_lookup_by_compatible(const char *s)
+{
+	return ERR_PTR(-ENOSYS);
+}
 #endif
 
 #endif
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#3 lore raw

PATCH v4 3/11 clocksource: Do not mix depends and select for ATMEL_PIT

In reply to Sam Ravnborg

CLOCKSOURCE_ATMEL_PIT was both set to yes using depends on and using select.
Use only select to set this non-visible symbol to 'y'

---
 drivers/clocksource/Kconfig | 1 -
 1 file changed, 1 deletion(-)
drivers/clocksource/Kconfig +0 -1
index 7b04663d2..b0502c303 100644
@@ -69,7 +69,6 @@ config CLOCKSOURCE_ROCKCHIP
 
 config CLOCKSOURCE_ATMEL_PIT
        bool
-       depends on SOC_AT91SAM9 || SOC_SAMA5
 
 config CLOCKSOURCE_ARMV8_TIMER
 	bool
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#4 lore raw

PATCH v4 4/11 arm: at91: add SOC_SAMA5{D2,D3,D4}

In reply to Sam Ravnborg

This split allows us to distingush between the SOC types. The SOC symbols will be used in following patches. SOC_SAMA5D2 is essential unused for now,, and only added to prepare for future use

---
 arch/arm/mach-at91/Kconfig | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)
arch/arm/mach-at91/Kconfig +18 -2
index b101e61d2..bb398716f 100644
@@ -57,6 +57,22 @@ config SOC_AT91SAM9
 config SOC_SAMA5
 	bool
 	select CPU_V7
+
+config SOC_SAMA5D2
+	bool
+	select SOC_SAMA5
+	select AT91SAM9_SMC
+	select CLOCKSOURCE_ATMEL_PIT
+
+config SOC_SAMA5D3
+	bool
+	select SOC_SAMA5
+	select AT91SAM9_SMC
+	select CLOCKSOURCE_ATMEL_PIT
+
+config SOC_SAMA5D4
+	bool
+	select SOC_SAMA5
 	select AT91SAM9_SMC
 	select CLOCKSOURCE_ATMEL_PIT
 
@@ -188,14 +204,14 @@ config ARCH_AT91SAM9N12
 
 config ARCH_SAMA5D3
 	bool "SAMA5D3x"
-	select SOC_SAMA5
+	select SOC_SAMA5D3
 	select HAVE_AT91_DBGU1
 	select HAS_MACB
 	select HAVE_MACH_ARM_HEAD
 
 config ARCH_SAMA5D4
 	bool "SAMA5D4"
-	select SOC_SAMA5
+	select SOC_SAMA5D4
 	select HAVE_AT91_DBGU2
 	select HAS_MACB
 	select HAVE_MACH_ARM_HEAD
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#5 lore raw

PATCH v4 5/11 clk: at91: add at91sam9260

In reply to Sam Ravnborg

Add at91sam9260 as part of supporting the PMC bindings for ARM at91. The file will be wired into the build in a follow-up patch.

The file is a copy from kernel 5.0-rc6 modified to build with barebox.

---
 drivers/clk/at91/at91sam9260.c | 497 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 497 insertions(+)
 create mode 100644 drivers/clk/at91/at91sam9260.c
drivers/clk/at91/at91sam9260.c new file +497 -0
new file mode 100644
index 000000000..ac67dcc8f
@@ -0,0 +1,497 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <driver.h>
+#include <regmap.h>
+#include <stdio.h>
+#include <mfd/syscon.h>
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/clock/at91.h>
+
+#include "pmc.h"
+
+struct sck {
+	char *n;
+	char *p;
+	u8 id;
+};
+
+struct pck {
+	char *n;
+	u8 id;
+};
+
+struct at91sam926x_data {
+	const struct clk_pll_layout *plla_layout;
+	const struct clk_pll_characteristics *plla_characteristics;
+	const struct clk_pll_layout *pllb_layout;
+	const struct clk_pll_characteristics *pllb_characteristics;
+	const struct clk_master_characteristics *mck_characteristics;
+	const struct sck *sck;
+	const struct pck *pck;
+	u8 num_sck;
+	u8 num_pck;
+	u8 num_progck;
+	bool has_slck;
+};
+
+static const struct clk_master_characteristics sam9260_mck_characteristics = {
+	.output = { .min = 0, .max = 105000000 },
+	.divisors = { 1, 2, 4, 0 },
+};
+
+static u8 sam9260_plla_out[] = { 0, 2 };
+
+static u16 sam9260_plla_icpll[] = { 1, 1 };
+
+static struct clk_range sam9260_plla_outputs[] = {
+	{ .min = 80000000, .max = 160000000 },
+	{ .min = 150000000, .max = 240000000 },
+};
+
+static const struct clk_pll_characteristics sam9260_plla_characteristics = {
+	.input = { .min = 1000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9260_plla_outputs),
+	.output = sam9260_plla_outputs,
+	.icpll = sam9260_plla_icpll,
+	.out = sam9260_plla_out,
+};
+
+static u8 sam9260_pllb_out[] = { 1 };
+
+static u16 sam9260_pllb_icpll[] = { 1 };
+
+static struct clk_range sam9260_pllb_outputs[] = {
+	{ .min = 70000000, .max = 130000000 },
+};
+
+static const struct clk_pll_characteristics sam9260_pllb_characteristics = {
+	.input = { .min = 1000000, .max = 5000000 },
+	.num_output = ARRAY_SIZE(sam9260_pllb_outputs),
+	.output = sam9260_pllb_outputs,
+	.icpll = sam9260_pllb_icpll,
+	.out = sam9260_pllb_out,
+};
+
+static const struct sck at91sam9260_systemck[] = {
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+};
+
+static const struct pck at91sam9260_periphck[] = {
+	{ .n = "pioA_clk",   .id = 2 },
+	{ .n = "pioB_clk",   .id = 3 },
+	{ .n = "pioC_clk",   .id = 4 },
+	{ .n = "adc_clk",    .id = 5 },
+	{ .n = "usart0_clk", .id = 6 },
+	{ .n = "usart1_clk", .id = 7 },
+	{ .n = "usart2_clk", .id = 8 },
+	{ .n = "mci0_clk",   .id = 9 },
+	{ .n = "udc_clk",    .id = 10 },
+	{ .n = "twi0_clk",   .id = 11 },
+	{ .n = "spi0_clk",   .id = 12 },
+	{ .n = "spi1_clk",   .id = 13 },
+	{ .n = "ssc0_clk",   .id = 14 },
+	{ .n = "tc0_clk",    .id = 17 },
+	{ .n = "tc1_clk",    .id = 18 },
+	{ .n = "tc2_clk",    .id = 19 },
+	{ .n = "ohci_clk",   .id = 20 },
+	{ .n = "macb0_clk",  .id = 21 },
+	{ .n = "isi_clk",    .id = 22 },
+	{ .n = "usart3_clk", .id = 23 },
+	{ .n = "uart0_clk",  .id = 24 },
+	{ .n = "uart1_clk",  .id = 25 },
+	{ .n = "tc3_clk",    .id = 26 },
+	{ .n = "tc4_clk",    .id = 27 },
+	{ .n = "tc5_clk",    .id = 28 },
+};
+
+static struct at91sam926x_data at91sam9260_data = {
+	.plla_layout = &at91rm9200_pll_layout,
+	.plla_characteristics = &sam9260_plla_characteristics,
+	.pllb_layout = &at91rm9200_pll_layout,
+	.pllb_characteristics = &sam9260_pllb_characteristics,
+	.mck_characteristics = &sam9260_mck_characteristics,
+	.sck = at91sam9260_systemck,
+	.num_sck = ARRAY_SIZE(at91sam9260_systemck),
+	.pck = at91sam9260_periphck,
+	.num_pck = ARRAY_SIZE(at91sam9260_periphck),
+	.num_progck = 2,
+	.has_slck = true,
+};
+
+static const struct clk_master_characteristics sam9g20_mck_characteristics = {
+	.output = { .min = 0, .max = 133000000 },
+	.divisors = { 1, 2, 4, 6 },
+};
+
+static u8 sam9g20_plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 };
+
+static u16 sam9g20_plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 };
+
+static struct clk_range sam9g20_plla_outputs[] = {
+	{ .min = 745000000, .max = 800000000 },
+	{ .min = 695000000, .max = 750000000 },
+	{ .min = 645000000, .max = 700000000 },
+	{ .min = 595000000, .max = 650000000 },
+	{ .min = 545000000, .max = 600000000 },
+	{ .min = 495000000, .max = 550000000 },
+	{ .min = 445000000, .max = 500000000 },
+	{ .min = 400000000, .max = 450000000 },
+};
+
+static const struct clk_pll_characteristics sam9g20_plla_characteristics = {
+	.input = { .min = 2000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9g20_plla_outputs),
+	.output = sam9g20_plla_outputs,
+	.icpll = sam9g20_plla_icpll,
+	.out = sam9g20_plla_out,
+};
+
+static u8 sam9g20_pllb_out[] = { 0 };
+
+static u16 sam9g20_pllb_icpll[] = { 0 };
+
+static struct clk_range sam9g20_pllb_outputs[] = {
+	{ .min = 30000000, .max = 100000000 },
+};
+
+static const struct clk_pll_characteristics sam9g20_pllb_characteristics = {
+	.input = { .min = 2000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9g20_pllb_outputs),
+	.output = sam9g20_pllb_outputs,
+	.icpll = sam9g20_pllb_icpll,
+	.out = sam9g20_pllb_out,
+};
+
+static struct at91sam926x_data at91sam9g20_data = {
+	.plla_layout = &at91sam9g45_pll_layout,
+	.plla_characteristics = &sam9g20_plla_characteristics,
+	.pllb_layout = &at91sam9g20_pllb_layout,
+	.pllb_characteristics = &sam9g20_pllb_characteristics,
+	.mck_characteristics = &sam9g20_mck_characteristics,
+	.sck = at91sam9260_systemck,
+	.num_sck = ARRAY_SIZE(at91sam9260_systemck),
+	.pck = at91sam9260_periphck,
+	.num_pck = ARRAY_SIZE(at91sam9260_periphck),
+	.num_progck = 2,
+	.has_slck = true,
+};
+
+static const struct clk_master_characteristics sam9261_mck_characteristics = {
+	.output = { .min = 0, .max = 94000000 },
+	.divisors = { 1, 2, 4, 0 },
+};
+
+static struct clk_range sam9261_plla_outputs[] = {
+	{ .min = 80000000, .max = 200000000 },
+	{ .min = 190000000, .max = 240000000 },
+};
+
+static const struct clk_pll_characteristics sam9261_plla_characteristics = {
+	.input = { .min = 1000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9261_plla_outputs),
+	.output = sam9261_plla_outputs,
+	.icpll = sam9260_plla_icpll,
+	.out = sam9260_plla_out,
+};
+
+static u8 sam9261_pllb_out[] = { 1 };
+
+static u16 sam9261_pllb_icpll[] = { 1 };
+
+static struct clk_range sam9261_pllb_outputs[] = {
+	{ .min = 70000000, .max = 130000000 },
+};
+
+static const struct clk_pll_characteristics sam9261_pllb_characteristics = {
+	.input = { .min = 1000000, .max = 5000000 },
+	.num_output = ARRAY_SIZE(sam9261_pllb_outputs),
+	.output = sam9261_pllb_outputs,
+	.icpll = sam9261_pllb_icpll,
+	.out = sam9261_pllb_out,
+};
+
+static const struct sck at91sam9261_systemck[] = {
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+	{ .n = "pck2",  .p = "prog2",    .id = 10 },
+	{ .n = "pck3",  .p = "prog3",    .id = 11 },
+	{ .n = "hclk0", .p = "masterck", .id = 16 },
+	{ .n = "hclk1", .p = "masterck", .id = 17 },
+};
+
+static const struct pck at91sam9261_periphck[] = {
+	{ .n = "pioA_clk",   .id = 2, },
+	{ .n = "pioB_clk",   .id = 3, },
+	{ .n = "pioC_clk",   .id = 4, },
+	{ .n = "usart0_clk", .id = 6, },
+	{ .n = "usart1_clk", .id = 7, },
+	{ .n = "usart2_clk", .id = 8, },
+	{ .n = "mci0_clk",   .id = 9, },
+	{ .n = "udc_clk",    .id = 10, },
+	{ .n = "twi0_clk",   .id = 11, },
+	{ .n = "spi0_clk",   .id = 12, },
+	{ .n = "spi1_clk",   .id = 13, },
+	{ .n = "ssc0_clk",   .id = 14, },
+	{ .n = "ssc1_clk",   .id = 15, },
+	{ .n = "ssc2_clk",   .id = 16, },
+	{ .n = "tc0_clk",    .id = 17, },
+	{ .n = "tc1_clk",    .id = 18, },
+	{ .n = "tc2_clk",    .id = 19, },
+	{ .n = "ohci_clk",   .id = 20, },
+	{ .n = "lcd_clk",    .id = 21, },
+};
+
+static struct at91sam926x_data at91sam9261_data = {
+	.plla_layout = &at91rm9200_pll_layout,
+	.plla_characteristics = &sam9261_plla_characteristics,
+	.pllb_layout = &at91rm9200_pll_layout,
+	.pllb_characteristics = &sam9261_pllb_characteristics,
+	.mck_characteristics = &sam9261_mck_characteristics,
+	.sck = at91sam9261_systemck,
+	.num_sck = ARRAY_SIZE(at91sam9261_systemck),
+	.pck = at91sam9261_periphck,
+	.num_pck = ARRAY_SIZE(at91sam9261_periphck),
+	.num_progck = 4,
+};
+
+static const struct clk_master_characteristics sam9263_mck_characteristics = {
+	.output = { .min = 0, .max = 120000000 },
+	.divisors = { 1, 2, 4, 0 },
+};
+
+static struct clk_range sam9263_pll_outputs[] = {
+	{ .min = 80000000, .max = 200000000 },
+	{ .min = 190000000, .max = 240000000 },
+};
+
+static const struct clk_pll_characteristics sam9263_pll_characteristics = {
+	.input = { .min = 1000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9263_pll_outputs),
+	.output = sam9263_pll_outputs,
+	.icpll = sam9260_plla_icpll,
+	.out = sam9260_plla_out,
+};
+
+static const struct sck at91sam9263_systemck[] = {
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+	{ .n = "pck2",  .p = "prog2",    .id = 10 },
+	{ .n = "pck3",  .p = "prog3",    .id = 11 },
+};
+
+static const struct pck at91sam9263_periphck[] = {
+	{ .n = "pioA_clk",   .id = 2, },
+	{ .n = "pioB_clk",   .id = 3, },
+	{ .n = "pioCDE_clk", .id = 4, },
+	{ .n = "usart0_clk", .id = 7, },
+	{ .n = "usart1_clk", .id = 8, },
+	{ .n = "usart2_clk", .id = 9, },
+	{ .n = "mci0_clk",   .id = 10, },
+	{ .n = "mci1_clk",   .id = 11, },
+	{ .n = "can_clk",    .id = 12, },
+	{ .n = "twi0_clk",   .id = 13, },
+	{ .n = "spi0_clk",   .id = 14, },
+	{ .n = "spi1_clk",   .id = 15, },
+	{ .n = "ssc0_clk",   .id = 16, },
+	{ .n = "ssc1_clk",   .id = 17, },
+	{ .n = "ac97_clk",   .id = 18, },
+	{ .n = "tcb_clk",    .id = 19, },
+	{ .n = "pwm_clk",    .id = 20, },
+	{ .n = "macb0_clk",  .id = 21, },
+	{ .n = "g2de_clk",   .id = 23, },
+	{ .n = "udc_clk",    .id = 24, },
+	{ .n = "isi_clk",    .id = 25, },
+	{ .n = "lcd_clk",    .id = 26, },
+	{ .n = "dma_clk",    .id = 27, },
+	{ .n = "ohci_clk",   .id = 29, },
+};
+
+static struct at91sam926x_data at91sam9263_data = {
+	.plla_layout = &at91rm9200_pll_layout,
+	.plla_characteristics = &sam9263_pll_characteristics,
+	.pllb_layout = &at91rm9200_pll_layout,
+	.pllb_characteristics = &sam9263_pll_characteristics,
+	.mck_characteristics = &sam9263_mck_characteristics,
+	.sck = at91sam9263_systemck,
+	.num_sck = ARRAY_SIZE(at91sam9263_systemck),
+	.pck = at91sam9263_periphck,
+	.num_pck = ARRAY_SIZE(at91sam9263_periphck),
+	.num_progck = 4,
+};
+
+static void __init at91sam926x_pmc_setup(struct device_node *np,
+					 struct at91sam926x_data *data)
+{
+	const char *slowxtal_name, *mainxtal_name;
+	struct pmc_data *at91sam9260_pmc;
+	u32 usb_div[] = { 1, 2, 4, 0 };
+	const char *parent_names[6];
+	const char *slck_name;
+	struct regmap *regmap;
+	struct clk *hw;
+	int i;
+	bool bypass;
+
+	i = of_property_match_string(np, "clock-names", "slow_xtal");
+	if (i < 0)
+		return;
+
+	slowxtal_name = of_clk_get_parent_name(np, i);
+
+	i = of_property_match_string(np, "clock-names", "main_xtal");
+	if (i < 0)
+		return;
+	mainxtal_name = of_clk_get_parent_name(np, i);
+
+	regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(regmap))
+		return;
+
+	at91sam9260_pmc = pmc_data_allocate(PMC_MAIN + 1,
+					    ndck(data->sck, data->num_sck),
+					    ndck(data->pck, data->num_pck), 0);
+	if (!at91sam9260_pmc)
+		return;
+
+	bypass = of_property_read_bool(np, "atmel,osc-bypass");
+
+	hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
+					bypass);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_rm9200_main(regmap, "mainck", "main_osc");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9260_pmc->chws[PMC_MAIN] = hw;
+
+	if (data->has_slck) {
+		hw = clk_fixed("slow_rc_osc", 32768);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		parent_names[0] = "slow_rc_osc";
+		parent_names[1] = "slow_xtal";
+		hw = at91_clk_register_sam9260_slow(regmap, "slck",
+						    parent_names, 2);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9260_pmc->chws[PMC_SLOW] = hw;
+		slck_name = "slck";
+	} else {
+		slck_name = slowxtal_name;
+	}
+
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+				   data->plla_layout,
+				   data->plla_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_pll(regmap, "pllbck", "mainck", 1,
+				   data->pllb_layout,
+				   data->pllb_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "pllack";
+	parent_names[3] = "pllbck";
+	hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
+				      &at91rm9200_master_layout,
+				      data->mck_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9260_pmc->chws[PMC_MCK] = hw;
+
+	hw = at91rm9200_clk_register_usb(regmap, "usbck", "pllbck", usb_div);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "pllack";
+	parent_names[3] = "pllbck";
+	for (i = 0; i < data->num_progck; i++) {
+		char *name;
+
+		name = xasprintf("prog%d", i);
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, 4, i,
+						    &at91rm9200_programmable_layout);
+		if (IS_ERR(hw))
+			goto err_free;
+	}
+
+	for (i = 0; i < data->num_sck; i++) {
+		hw = at91_clk_register_system(regmap, data->sck[i].n,
+					      data->sck[i].p,
+					      data->sck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9260_pmc->shws[data->sck[i].id] = hw;
+	}
+
+	for (i = 0; i < data->num_pck; i++) {
+		hw = at91_clk_register_peripheral(regmap,
+						  data->pck[i].n,
+						  "masterck",
+						  data->pck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9260_pmc->phws[data->pck[i].id] = hw;
+	}
+
+	of_clk_add_provider(np, of_clk_hw_pmc_get, at91sam9260_pmc);
+
+	return;
+
+err_free:
+	pmc_data_free(at91sam9260_pmc);
+}
+
+static void __init at91sam9260_pmc_setup(struct device_node *np)
+{
+	at91sam926x_pmc_setup(np, &at91sam9260_data);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9260_pmc, "atmel,at91sam9260-pmc",
+		      at91sam9260_pmc_setup);
+
+static void __init at91sam9261_pmc_setup(struct device_node *np)
+{
+	at91sam926x_pmc_setup(np, &at91sam9261_data);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9261_pmc, "atmel,at91sam9261-pmc",
+		      at91sam9261_pmc_setup);
+
+static void __init at91sam9263_pmc_setup(struct device_node *np)
+{
+	at91sam926x_pmc_setup(np, &at91sam9263_data);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9263_pmc, "atmel,at91sam9263-pmc",
+		      at91sam9263_pmc_setup);
+
+static void __init at91sam9g20_pmc_setup(struct device_node *np)
+{
+	at91sam926x_pmc_setup(np, &at91sam9g20_data);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9g20_pmc, "atmel,at91sam9g20-pmc",
+		      at91sam9g20_pmc_setup);
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#6 lore raw

PATCH v4 6/11 clk: at91: add at91sam9rl

In reply to Sam Ravnborg

Add at91sam9rl as part of supporting the PMC bindings for ARM at91. The file will be wired into the build in a follow-up patch.

The file is a copy from kernel 5.0-rc6 modified to build with barebox.

---
 drivers/clk/at91/at91sam9rl.c | 177 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 177 insertions(+)
 create mode 100644 drivers/clk/at91/at91sam9rl.c
drivers/clk/at91/at91sam9rl.c new file +177 -0
new file mode 100644
index 000000000..82acb3825
@@ -0,0 +1,177 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <driver.h>
+#include <regmap.h>
+#include <stdio.h>
+#include <mfd/syscon.h>
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/clock/at91.h>
+
+#include "pmc.h"
+
+static const struct clk_master_characteristics sam9rl_mck_characteristics = {
+	.output = { .min = 0, .max = 94000000 },
+	.divisors = { 1, 2, 4, 0 },
+};
+
+static u8 sam9rl_plla_out[] = { 0, 2 };
+
+static struct clk_range sam9rl_plla_outputs[] = {
+	{ .min = 80000000, .max = 200000000 },
+	{ .min = 190000000, .max = 240000000 },
+};
+
+static const struct clk_pll_characteristics sam9rl_plla_characteristics = {
+	.input = { .min = 1000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(sam9rl_plla_outputs),
+	.output = sam9rl_plla_outputs,
+	.out = sam9rl_plla_out,
+};
+
+static const struct {
+	char *n;
+	char *p;
+	u8 id;
+} at91sam9rl_systemck[] = {
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+} at91sam9rl_periphck[] = {
+	{ .n = "pioA_clk",   .id = 2, },
+	{ .n = "pioB_clk",   .id = 3, },
+	{ .n = "pioC_clk",   .id = 4, },
+	{ .n = "pioD_clk",   .id = 5, },
+	{ .n = "usart0_clk", .id = 6, },
+	{ .n = "usart1_clk", .id = 7, },
+	{ .n = "usart2_clk", .id = 8, },
+	{ .n = "usart3_clk", .id = 9, },
+	{ .n = "mci0_clk",   .id = 10, },
+	{ .n = "twi0_clk",   .id = 11, },
+	{ .n = "twi1_clk",   .id = 12, },
+	{ .n = "spi0_clk",   .id = 13, },
+	{ .n = "ssc0_clk",   .id = 14, },
+	{ .n = "ssc1_clk",   .id = 15, },
+	{ .n = "tc0_clk",    .id = 16, },
+	{ .n = "tc1_clk",    .id = 17, },
+	{ .n = "tc2_clk",    .id = 18, },
+	{ .n = "pwm_clk",    .id = 19, },
+	{ .n = "adc_clk",    .id = 20, },
+	{ .n = "dma0_clk",   .id = 21, },
+	{ .n = "udphs_clk",  .id = 22, },
+	{ .n = "lcd_clk",    .id = 23, },
+};
+
+static void __init at91sam9rl_pmc_setup(struct device_node *np)
+{
+	const char *slck_name, *mainxtal_name;
+	struct pmc_data *at91sam9rl_pmc;
+	const char *parent_names[6];
+	struct regmap *regmap;
+	struct clk *hw;
+	int i;
+
+	i = of_property_match_string(np, "clock-names", "slow_clk");
+	if (i < 0)
+		return;
+
+	slck_name = of_clk_get_parent_name(np, i);
+
+	i = of_property_match_string(np, "clock-names", "main_xtal");
+	if (i < 0)
+		return;
+	mainxtal_name = of_clk_get_parent_name(np, i);
+
+	regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(regmap))
+		return;
+
+	at91sam9rl_pmc = pmc_data_allocate(PMC_MAIN + 1,
+					   nck(at91sam9rl_systemck),
+					   nck(at91sam9rl_periphck), 0);
+	if (!at91sam9rl_pmc)
+		return;
+
+	hw = at91_clk_register_rm9200_main(regmap, "mainck", mainxtal_name);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9rl_pmc->chws[PMC_MAIN] = hw;
+
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+				   &at91rm9200_pll_layout,
+				   &sam9rl_plla_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9rl_pmc->chws[PMC_UTMI] = hw;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "pllack";
+	parent_names[3] = "utmick";
+	hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
+				      &at91rm9200_master_layout,
+				      &sam9rl_mck_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9rl_pmc->chws[PMC_MCK] = hw;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "pllack";
+	parent_names[3] = "utmick";
+	parent_names[4] = "masterck";
+	for (i = 0; i < 2; i++) {
+		char *name;
+
+		name = xasprintf("prog%d", i);
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, 5, i,
+						    &at91rm9200_programmable_layout);
+		if (IS_ERR(hw))
+			goto err_free;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(at91sam9rl_systemck); i++) {
+		hw = at91_clk_register_system(regmap, at91sam9rl_systemck[i].n,
+					      at91sam9rl_systemck[i].p,
+					      at91sam9rl_systemck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9rl_pmc->shws[at91sam9rl_systemck[i].id] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(at91sam9rl_periphck); i++) {
+		hw = at91_clk_register_peripheral(regmap,
+						  at91sam9rl_periphck[i].n,
+						  "masterck",
+						  at91sam9rl_periphck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9rl_pmc->phws[at91sam9rl_periphck[i].id] = hw;
+	}
+
+	of_clk_add_provider(np, of_clk_hw_pmc_get, at91sam9rl_pmc);
+
+	return;
+
+err_free:
+	pmc_data_free(at91sam9rl_pmc);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9rl_pmc, "atmel,at91sam9rl-pmc", at91sam9rl_pmc_setup);
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#7 lore raw

PATCH v4 7/11 clk: at91: add at91sam9x5

In reply to Sam Ravnborg

Add at91sam9x5 as part of supporting the PMC bindings for ARM at91. The file will be wired into the build in a follow-up patch.

The file is a copy from kernel 5.0-rc6 modified to build with barebox.

---
 drivers/clk/at91/at91sam9x5.c | 315 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 315 insertions(+)
 create mode 100644 drivers/clk/at91/at91sam9x5.c
drivers/clk/at91/at91sam9x5.c new file +315 -0
new file mode 100644
index 000000000..5e0aacfbf
@@ -0,0 +1,315 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <driver.h>
+#include <regmap.h>
+#include <stdio.h>
+#include <mfd/syscon.h>
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/clock/at91.h>
+
+#include "pmc.h"
+
+static const struct clk_master_characteristics mck_characteristics = {
+	.output = { .min = 0, .max = 133333333 },
+	.divisors = { 1, 2, 4, 3 },
+	.have_div3_pres = 1,
+};
+
+static u8 plla_out[] = { 0, 1, 2, 3, 0, 1, 2, 3 };
+
+static u16 plla_icpll[] = { 0, 0, 0, 0, 1, 1, 1, 1 };
+
+static struct clk_range plla_outputs[] = {
+	{ .min = 745000000, .max = 800000000 },
+	{ .min = 695000000, .max = 750000000 },
+	{ .min = 645000000, .max = 700000000 },
+	{ .min = 595000000, .max = 650000000 },
+	{ .min = 545000000, .max = 600000000 },
+	{ .min = 495000000, .max = 555000000 },
+	{ .min = 445000000, .max = 500000000 },
+	{ .min = 400000000, .max = 450000000 },
+};
+
+static const struct clk_pll_characteristics plla_characteristics = {
+	.input = { .min = 2000000, .max = 32000000 },
+	.num_output = ARRAY_SIZE(plla_outputs),
+	.output = plla_outputs,
+	.icpll = plla_icpll,
+	.out = plla_out,
+};
+
+static const struct {
+	char *n;
+	char *p;
+	u8 id;
+} at91sam9x5_systemck[] = {
+	{ .n = "ddrck", .p = "masterck", .id = 2 },
+	{ .n = "smdck", .p = "smdclk",   .id = 4 },
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+};
+
+struct pck {
+	char *n;
+	u8 id;
+};
+
+static const struct pck at91sam9x5_periphck[] = {
+	{ .n = "pioAB_clk",  .id = 2, },
+	{ .n = "pioCD_clk",  .id = 3, },
+	{ .n = "smd_clk",    .id = 4, },
+	{ .n = "usart0_clk", .id = 5, },
+	{ .n = "usart1_clk", .id = 6, },
+	{ .n = "usart2_clk", .id = 7, },
+	{ .n = "twi0_clk",   .id = 9, },
+	{ .n = "twi1_clk",   .id = 10, },
+	{ .n = "twi2_clk",   .id = 11, },
+	{ .n = "mci0_clk",   .id = 12, },
+	{ .n = "spi0_clk",   .id = 13, },
+	{ .n = "spi1_clk",   .id = 14, },
+	{ .n = "uart0_clk",  .id = 15, },
+	{ .n = "uart1_clk",  .id = 16, },
+	{ .n = "tcb0_clk",   .id = 17, },
+	{ .n = "pwm_clk",    .id = 18, },
+	{ .n = "adc_clk",    .id = 19, },
+	{ .n = "dma0_clk",   .id = 20, },
+	{ .n = "dma1_clk",   .id = 21, },
+	{ .n = "uhphs_clk",  .id = 22, },
+	{ .n = "udphs_clk",  .id = 23, },
+	{ .n = "mci1_clk",   .id = 26, },
+	{ .n = "ssc0_clk",   .id = 28, },
+};
+
+static const struct pck at91sam9g15_periphck[] = {
+	{ .n = "lcdc_clk", .id = 25, },
+	{ /* sentinel */}
+};
+
+static const struct pck at91sam9g25_periphck[] = {
+	{ .n = "usart3_clk", .id = 8, },
+	{ .n = "macb0_clk", .id = 24, },
+	{ .n = "isi_clk", .id = 25, },
+	{ /* sentinel */}
+};
+
+static const struct pck at91sam9g35_periphck[] = {
+	{ .n = "macb0_clk", .id = 24, },
+	{ .n = "lcdc_clk", .id = 25, },
+	{ /* sentinel */}
+};
+
+static const struct pck at91sam9x25_periphck[] = {
+	{ .n = "usart3_clk", .id = 8, },
+	{ .n = "macb0_clk", .id = 24, },
+	{ .n = "macb1_clk", .id = 27, },
+	{ .n = "can0_clk", .id = 29, },
+	{ .n = "can1_clk", .id = 30, },
+	{ /* sentinel */}
+};
+
+static const struct pck at91sam9x35_periphck[] = {
+	{ .n = "macb0_clk", .id = 24, },
+	{ .n = "lcdc_clk", .id = 25, },
+	{ .n = "can0_clk", .id = 29, },
+	{ .n = "can1_clk", .id = 30, },
+	{ /* sentinel */}
+};
+
+static void __init at91sam9x5_pmc_setup(struct device_node *np,
+					const struct pck *extra_pcks,
+					bool has_lcdck)
+{
+	struct clk_range range = CLK_RANGE(0, 0);
+	const char *slck_name, *mainxtal_name;
+	struct pmc_data *at91sam9x5_pmc;
+	const char *parent_names[6];
+	struct regmap *regmap;
+	struct clk *hw;
+	int i;
+	bool bypass;
+
+	i = of_property_match_string(np, "clock-names", "slow_clk");
+	if (i < 0)
+		return;
+
+	slck_name = of_clk_get_parent_name(np, i);
+
+	i = of_property_match_string(np, "clock-names", "main_xtal");
+	if (i < 0)
+		return;
+	mainxtal_name = of_clk_get_parent_name(np, i);
+
+	regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(regmap))
+		return;
+
+	at91sam9x5_pmc = pmc_data_allocate(PMC_MAIN + 1,
+					   nck(at91sam9x5_systemck),
+					   nck(at91sam9x35_periphck), 0);
+	if (!at91sam9x5_pmc)
+		return;
+
+	hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
+					   50000000);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	bypass = of_property_read_bool(np, "atmel,osc-bypass");
+
+	hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
+					bypass);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = "main_rc_osc";
+	parent_names[1] = "main_osc";
+	hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9x5_pmc->chws[PMC_MAIN] = hw;
+
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+				   &at91rm9200_pll_layout, &plla_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9x5_pmc->chws[PMC_UTMI] = hw;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
+				      &at91sam9x5_master_layout,
+				      &mck_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	at91sam9x5_pmc->chws[PMC_MCK] = hw;
+
+	parent_names[0] = "plladivck";
+	parent_names[1] = "utmick";
+	hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	parent_names[4] = "mck";
+	for (i = 0; i < 2; i++) {
+		char *name;
+
+		name = xasprintf("prog%d", i);
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, 5, i,
+						    &at91sam9x5_programmable_layout);
+		if (IS_ERR(hw))
+			goto err_free;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(at91sam9x5_systemck); i++) {
+		hw = at91_clk_register_system(regmap, at91sam9x5_systemck[i].n,
+					      at91sam9x5_systemck[i].p,
+					      at91sam9x5_systemck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9x5_pmc->shws[at91sam9x5_systemck[i].id] = hw;
+	}
+
+	if (has_lcdck) {
+		hw = at91_clk_register_system(regmap, "lcdck", "masterck", 3);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9x5_pmc->shws[3] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(at91sam9x5_periphck); i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap,
+							 at91sam9x5_periphck[i].n,
+							 "masterck",
+							 at91sam9x5_periphck[i].id,
+							 &range);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9x5_pmc->phws[at91sam9x5_periphck[i].id] = hw;
+	}
+
+	for (i = 0; extra_pcks[i].id; i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap,
+							 extra_pcks[i].n,
+							 "masterck",
+							 extra_pcks[i].id,
+							 &range);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		at91sam9x5_pmc->phws[extra_pcks[i].id] = hw;
+	}
+
+	of_clk_add_provider(np, of_clk_hw_pmc_get, at91sam9x5_pmc);
+
+	return;
+
+err_free:
+	pmc_data_free(at91sam9x5_pmc);
+}
+
+static void __init at91sam9g15_pmc_setup(struct device_node *np)
+{
+	at91sam9x5_pmc_setup(np, at91sam9g15_periphck, true);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9g15_pmc, "atmel,at91sam9g15-pmc",
+		      at91sam9g15_pmc_setup);
+
+static void __init at91sam9g25_pmc_setup(struct device_node *np)
+{
+	at91sam9x5_pmc_setup(np, at91sam9g25_periphck, false);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9g25_pmc, "atmel,at91sam9g25-pmc",
+		      at91sam9g25_pmc_setup);
+
+static void __init at91sam9g35_pmc_setup(struct device_node *np)
+{
+	at91sam9x5_pmc_setup(np, at91sam9g35_periphck, true);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9g35_pmc, "atmel,at91sam9g35-pmc",
+		      at91sam9g35_pmc_setup);
+
+static void __init at91sam9x25_pmc_setup(struct device_node *np)
+{
+	at91sam9x5_pmc_setup(np, at91sam9x25_periphck, false);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9x25_pmc, "atmel,at91sam9x25-pmc",
+		      at91sam9x25_pmc_setup);
+
+static void __init at91sam9x35_pmc_setup(struct device_node *np)
+{
+	at91sam9x5_pmc_setup(np, at91sam9x35_periphck, true);
+}
+CLK_OF_DECLARE_DRIVER(at91sam9x35_pmc, "atmel,at91sam9x35-pmc",
+		      at91sam9x35_pmc_setup);
Signature · 7 lines
2.12.0


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#8 lore raw

PATCH v4 8/11 clk: at91: add sama5d2

In reply to Sam Ravnborg

Add sama5d2 as part of supporting the PMC bindings for ARM at91. The file will be wired into the build in a follow-up patch.

The file is a copy from kernel 5.0-rc6 modified to build with barebox.

---
 drivers/clk/at91/sama5d2.c | 342 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 342 insertions(+)
 create mode 100644 drivers/clk/at91/sama5d2.c
drivers/clk/at91/sama5d2.c new file +342 -0
new file mode 100644
index 000000000..dc15f7d9c
@@ -0,0 +1,342 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <driver.h>
+#include <regmap.h>
+#include <stdio.h>
+#include <mfd/syscon.h>
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/clock/at91.h>
+
+#include "pmc.h"
+
+static const struct clk_master_characteristics mck_characteristics = {
+	.output = { .min = 124000000, .max = 166000000 },
+	.divisors = { 1, 2, 4, 3 },
+};
+
+static u8 plla_out[] = { 0 };
+
+static u16 plla_icpll[] = { 0 };
+
+static struct clk_range plla_outputs[] = {
+	{ .min = 600000000, .max = 1200000000 },
+};
+
+static const struct clk_pll_characteristics plla_characteristics = {
+	.input = { .min = 12000000, .max = 12000000 },
+	.num_output = ARRAY_SIZE(plla_outputs),
+	.output = plla_outputs,
+	.icpll = plla_icpll,
+	.out = plla_out,
+};
+
+static const struct {
+	char *n;
+	char *p;
+	u8 id;
+} sama5d2_systemck[] = {
+	{ .n = "ddrck", .p = "masterck", .id = 2 },
+	{ .n = "lcdck", .p = "masterck", .id = 3 },
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+	{ .n = "pck2",  .p = "prog2",    .id = 10 },
+	{ .n = "iscck", .p = "masterck", .id = 18 },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+	struct clk_range r;
+} sama5d2_periph32ck[] = {
+	{ .n = "macb0_clk",   .id = 5,  .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "tdes_clk",    .id = 11, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "matrix1_clk", .id = 14, },
+	{ .n = "hsmc_clk",    .id = 17, },
+	{ .n = "pioA_clk",    .id = 18, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "flx0_clk",    .id = 19, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "flx1_clk",    .id = 20, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "flx2_clk",    .id = 21, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "flx3_clk",    .id = 22, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "flx4_clk",    .id = 23, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uart0_clk",   .id = 24, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uart1_clk",   .id = 25, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uart2_clk",   .id = 26, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uart3_clk",   .id = 27, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uart4_clk",   .id = 28, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "twi0_clk",    .id = 29, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "twi1_clk",    .id = 30, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "spi0_clk",    .id = 33, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "spi1_clk",    .id = 34, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "tcb0_clk",    .id = 35, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "tcb1_clk",    .id = 36, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "pwm_clk",     .id = 38, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "adc_clk",     .id = 40, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "uhphs_clk",   .id = 41, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "udphs_clk",   .id = 42, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "ssc0_clk",    .id = 43, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "ssc1_clk",    .id = 44, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "trng_clk",    .id = 47, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "pdmic_clk",   .id = 48, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "securam_clk", .id = 51, },
+	{ .n = "i2s0_clk",    .id = 54, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "i2s1_clk",    .id = 55, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "can0_clk",    .id = 56, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "can1_clk",    .id = 57, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "classd_clk",  .id = 59, .r = { .min = 0, .max = 83000000 }, },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+} sama5d2_periphck[] = {
+	{ .n = "dma0_clk",    .id = 6, },
+	{ .n = "dma1_clk",    .id = 7, },
+	{ .n = "aes_clk",     .id = 9, },
+	{ .n = "aesb_clk",    .id = 10, },
+	{ .n = "sha_clk",     .id = 12, },
+	{ .n = "mpddr_clk",   .id = 13, },
+	{ .n = "matrix0_clk", .id = 15, },
+	{ .n = "sdmmc0_hclk", .id = 31, },
+	{ .n = "sdmmc1_hclk", .id = 32, },
+	{ .n = "lcdc_clk",    .id = 45, },
+	{ .n = "isc_clk",     .id = 46, },
+	{ .n = "qspi0_clk",   .id = 52, },
+	{ .n = "qspi1_clk",   .id = 53, },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+	struct clk_range r;
+	bool pll;
+} sama5d2_gck[] = {
+	{ .n = "sdmmc0_gclk", .id = 31, },
+	{ .n = "sdmmc1_gclk", .id = 32, },
+	{ .n = "tcb0_gclk",   .id = 35, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "tcb1_gclk",   .id = 36, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "pwm_gclk",    .id = 38, .r = { .min = 0, .max = 83000000 }, },
+	{ .n = "isc_gclk",    .id = 46, },
+	{ .n = "pdmic_gclk",  .id = 48, },
+	{ .n = "i2s0_gclk",   .id = 54, .pll = true },
+	{ .n = "i2s1_gclk",   .id = 55, .pll = true },
+	{ .n = "can0_gclk",   .id = 56, .r = { .min = 0, .max = 80000000 }, },
+	{ .n = "can1_gclk",   .id = 57, .r = { .min = 0, .max = 80000000 }, },
+	{ .n = "classd_gclk", .id = 59, .r = { .min = 0, .max = 100000000 },
+	  .pll = true },
+};
+
+static void __init sama5d2_pmc_setup(struct device_node *np)
+{
+	struct clk_range range = CLK_RANGE(0, 0);
+	const char *slck_name, *mainxtal_name;
+	struct pmc_data *sama5d2_pmc;
+	const char *parent_names[6];
+	struct regmap *regmap, *regmap_sfr;
+	struct clk *hw;
+	int i;
+	bool bypass;
+
+	i = of_property_match_string(np, "clock-names", "slow_clk");
+	if (i < 0)
+		return;
+
+	slck_name = of_clk_get_parent_name(np, i);
+
+	i = of_property_match_string(np, "clock-names", "main_xtal");
+	if (i < 0)
+		return;
+	mainxtal_name = of_clk_get_parent_name(np, i);
+
+	regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(regmap))
+		return;
+
+	sama5d2_pmc = pmc_data_allocate(PMC_I2S1_MUX + 1,
+					nck(sama5d2_systemck),
+					nck(sama5d2_periph32ck),
+					nck(sama5d2_gck));
+	if (!sama5d2_pmc)
+		return;
+
+	hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
+					   100000000);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	bypass = of_property_read_bool(np, "atmel,osc-bypass");
+
+	hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
+					bypass);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = "main_rc_osc";
+	parent_names[1] = "main_osc";
+	hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d2_pmc->chws[PMC_MAIN] = hw;
+
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+				   &sama5d3_pll_layout, &plla_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_audio_pll_frac(regmap, "audiopll_fracck",
+					      "mainck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_audio_pll_pad(regmap, "audiopll_padck",
+					     "audiopll_fracck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_audio_pll_pmc(regmap, "audiopll_pmcck",
+					     "audiopll_fracck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
+	if (IS_ERR(regmap_sfr))
+		regmap_sfr = NULL;
+
+	hw = at91_clk_register_utmi(regmap, regmap_sfr, "utmick", "mainck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d2_pmc->chws[PMC_UTMI] = hw;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
+				      &at91sam9x5_master_layout,
+				      &mck_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d2_pmc->chws[PMC_MCK] = hw;
+
+	hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d2_pmc->chws[PMC_MCK2] = hw;
+
+	parent_names[0] = "plladivck";
+	parent_names[1] = "utmick";
+	hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	parent_names[4] = "mck";
+	for (i = 0; i < 3; i++) {
+		char *name;
+
+		name = xasprintf("prog%d", i);
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, 5, i,
+						    &at91sam9x5_programmable_layout);
+		if (IS_ERR(hw))
+			goto err_free;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d2_systemck); i++) {
+		hw = at91_clk_register_system(regmap, sama5d2_systemck[i].n,
+					      sama5d2_systemck[i].p,
+					      sama5d2_systemck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->shws[sama5d2_systemck[i].id] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d2_periphck); i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
+							 sama5d2_periphck[i].n,
+							 "masterck",
+							 sama5d2_periphck[i].id,
+							 &range);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->phws[sama5d2_periphck[i].id] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d2_periph32ck); i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap, &pmc_pcr_lock,
+							 sama5d2_periph32ck[i].n,
+							 "h32mxck",
+							 sama5d2_periph32ck[i].id,
+							 &sama5d2_periph32ck[i].r);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->phws[sama5d2_periph32ck[i].id] = hw;
+	}
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	parent_names[4] = "mck";
+	parent_names[5] = "audiopll_pmcck";
+	for (i = 0; i < ARRAY_SIZE(sama5d2_gck); i++) {
+		hw = at91_clk_register_generated(regmap, &pmc_pcr_lock,
+						 sama5d2_gck[i].n,
+						 parent_names, 6,
+						 sama5d2_gck[i].id,
+						 sama5d2_gck[i].pll,
+						 &sama5d2_gck[i].r);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->ghws[sama5d2_gck[i].id] = hw;
+	}
+
+	if (regmap_sfr) {
+		parent_names[0] = "i2s0_clk";
+		parent_names[1] = "i2s0_gclk";
+		hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s0_muxclk",
+					       parent_names, 2, 0);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->chws[PMC_I2S0_MUX] = hw;
+
+		parent_names[0] = "i2s1_clk";
+		parent_names[1] = "i2s1_gclk";
+		hw = at91_clk_i2s_mux_register(regmap_sfr, "i2s1_muxclk",
+					       parent_names, 2, 1);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d2_pmc->chws[PMC_I2S1_MUX] = hw;
+	}
+
+	of_clk_add_provider(np, of_clk_hw_pmc_get, sama5d2_pmc);
+
+	return;
+
+err_free:
+	pmc_data_free(sama5d2_pmc);
+}
+CLK_OF_DECLARE_DRIVER(sama5d2_pmc, "atmel,sama5d2-pmc", sama5d2_pmc_setup);
Signature · 7 lines
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#9 lore raw

PATCH v4 9/11 clk: at91: add sama5d4

In reply to Sam Ravnborg

Add sama5d4 as part of supporting the PMC bindings for ARM at91. The file will be wired into the build in a follow-up patch.

The file is a copy from kernel 5.0-rc6 modified to build with barebox.

---
 drivers/clk/at91/sama5d4.c | 270 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 270 insertions(+)
 create mode 100644 drivers/clk/at91/sama5d4.c
drivers/clk/at91/sama5d4.c new file +270 -0
new file mode 100644
index 000000000..2fbfca6f8
@@ -0,0 +1,270 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <driver.h>
+#include <regmap.h>
+#include <stdio.h>
+#include <mfd/syscon.h>
+
+#include <linux/clk.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <dt-bindings/clock/at91.h>
+
+#include "pmc.h"
+
+static const struct clk_master_characteristics mck_characteristics = {
+	.output = { .min = 125000000, .max = 200000000 },
+	.divisors = { 1, 2, 4, 3 },
+};
+
+static u8 plla_out[] = { 0 };
+
+static u16 plla_icpll[] = { 0 };
+
+static struct clk_range plla_outputs[] = {
+	{ .min = 600000000, .max = 1200000000 },
+};
+
+static const struct clk_pll_characteristics plla_characteristics = {
+	.input = { .min = 12000000, .max = 12000000 },
+	.num_output = ARRAY_SIZE(plla_outputs),
+	.output = plla_outputs,
+	.icpll = plla_icpll,
+	.out = plla_out,
+};
+
+static const struct {
+	char *n;
+	char *p;
+	u8 id;
+} sama5d4_systemck[] = {
+	{ .n = "ddrck", .p = "masterck", .id = 2 },
+	{ .n = "lcdck", .p = "masterck", .id = 3 },
+	{ .n = "smdck", .p = "smdclk",   .id = 4 },
+	{ .n = "uhpck", .p = "usbck",    .id = 6 },
+	{ .n = "udpck", .p = "usbck",    .id = 7 },
+	{ .n = "pck0",  .p = "prog0",    .id = 8 },
+	{ .n = "pck1",  .p = "prog1",    .id = 9 },
+	{ .n = "pck2",  .p = "prog2",    .id = 10 },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+} sama5d4_periph32ck[] = {
+	{ .n = "pioD_clk", .id = 5 },
+	{ .n = "usart0_clk", .id = 6 },
+	{ .n = "usart1_clk", .id = 7 },
+	{ .n = "icm_clk", .id = 9 },
+	{ .n = "aes_clk", .id = 12 },
+	{ .n = "tdes_clk", .id = 14 },
+	{ .n = "sha_clk", .id = 15 },
+	{ .n = "matrix1_clk", .id = 17 },
+	{ .n = "hsmc_clk", .id = 22 },
+	{ .n = "pioA_clk", .id = 23 },
+	{ .n = "pioB_clk", .id = 24 },
+	{ .n = "pioC_clk", .id = 25 },
+	{ .n = "pioE_clk", .id = 26 },
+	{ .n = "uart0_clk", .id = 27 },
+	{ .n = "uart1_clk", .id = 28 },
+	{ .n = "usart2_clk", .id = 29 },
+	{ .n = "usart3_clk", .id = 30 },
+	{ .n = "usart4_clk", .id = 31 },
+	{ .n = "twi0_clk", .id = 32 },
+	{ .n = "twi1_clk", .id = 33 },
+	{ .n = "twi2_clk", .id = 34 },
+	{ .n = "mci0_clk", .id = 35 },
+	{ .n = "mci1_clk", .id = 36 },
+	{ .n = "spi0_clk", .id = 37 },
+	{ .n = "spi1_clk", .id = 38 },
+	{ .n = "spi2_clk", .id = 39 },
+	{ .n = "tcb0_clk", .id = 40 },
+	{ .n = "tcb1_clk", .id = 41 },
+	{ .n = "tcb2_clk", .id = 42 },
+	{ .n = "pwm_clk", .id = 43 },
+	{ .n = "adc_clk", .id = 44 },
+	{ .n = "dbgu_clk", .id = 45 },
+	{ .n = "uhphs_clk", .id = 46 },
+	{ .n = "udphs_clk", .id = 47 },
+	{ .n = "ssc0_clk", .id = 48 },
+	{ .n = "ssc1_clk", .id = 49 },
+	{ .n = "trng_clk", .id = 53 },
+	{ .n = "macb0_clk", .id = 54 },
+	{ .n = "macb1_clk", .id = 55 },
+	{ .n = "fuse_clk", .id = 57 },
+	{ .n = "securam_clk", .id = 59 },
+	{ .n = "smd_clk", .id = 61 },
+	{ .n = "twi3_clk", .id = 62 },
+	{ .n = "catb_clk", .id = 63 },
+};
+
+static const struct {
+	char *n;
+	u8 id;
+} sama5d4_periphck[] = {
+	{ .n = "dma0_clk", .id = 8 },
+	{ .n = "cpkcc_clk", .id = 10 },
+	{ .n = "aesb_clk", .id = 13 },
+	{ .n = "mpddr_clk", .id = 16 },
+	{ .n = "matrix0_clk", .id = 18 },
+	{ .n = "vdec_clk", .id = 19 },
+	{ .n = "dma1_clk", .id = 50 },
+	{ .n = "lcdc_clk", .id = 51 },
+	{ .n = "isi_clk", .id = 52 },
+};
+
+static void __init sama5d4_pmc_setup(struct device_node *np)
+{
+	struct clk_range range = CLK_RANGE(0, 0);
+	const char *slck_name, *mainxtal_name;
+	struct pmc_data *sama5d4_pmc;
+	const char *parent_names[5];
+	struct regmap *regmap;
+	struct clk *hw;
+	int i;
+	bool bypass;
+
+	i = of_property_match_string(np, "clock-names", "slow_clk");
+	if (i < 0)
+		return;
+
+	slck_name = of_clk_get_parent_name(np, i);
+
+	i = of_property_match_string(np, "clock-names", "main_xtal");
+	if (i < 0)
+		return;
+	mainxtal_name = of_clk_get_parent_name(np, i);
+
+	regmap = syscon_node_to_regmap(np);
+	if (IS_ERR(regmap))
+		return;
+
+	sama5d4_pmc = pmc_data_allocate(PMC_MCK2 + 1,
+					nck(sama5d4_systemck),
+					nck(sama5d4_periph32ck), 0);
+	if (!sama5d4_pmc)
+		return;
+
+	hw = at91_clk_register_main_rc_osc(regmap, "main_rc_osc", 12000000,
+					   100000000);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	bypass = of_property_read_bool(np, "atmel,osc-bypass");
+
+	hw = at91_clk_register_main_osc(regmap, "main_osc", mainxtal_name,
+					bypass);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = "main_rc_osc";
+	parent_names[1] = "main_osc";
+	hw = at91_clk_register_sam9x5_main(regmap, "mainck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_pll(regmap, "pllack", "mainck", 0,
+				   &sama5d3_pll_layout, &plla_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_plldiv(regmap, "plladivck", "pllack");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	hw = at91_clk_register_utmi(regmap, NULL, "utmick", "mainck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d4_pmc->chws[PMC_UTMI] = hw;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	hw = at91_clk_register_master(regmap, "masterck", 4, parent_names,
+				      &at91sam9x5_master_layout,
+				      &mck_characteristics);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d4_pmc->chws[PMC_MCK] = hw;
+
+	hw = at91_clk_register_h32mx(regmap, "h32mxck", "masterck");
+	if (IS_ERR(hw))
+		goto err_free;
+
+	sama5d4_pmc->chws[PMC_MCK2] = hw;
+
+	parent_names[0] = "plladivck";
+	parent_names[1] = "utmick";
+	hw = at91sam9x5_clk_register_usb(regmap, "usbck", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = "plladivck";
+	parent_names[1] = "utmick";
+	hw = at91sam9x5_clk_register_smd(regmap, "smdclk", parent_names, 2);
+	if (IS_ERR(hw))
+		goto err_free;
+
+	parent_names[0] = slck_name;
+	parent_names[1] = "mainck";
+	parent_names[2] = "plladivck";
+	parent_names[3] = "utmick";
+	parent_names[4] = "mck";
+	for (i = 0; i < 3; i++) {
+		char *name;
+
+		name = xasprintf("prog%d", i);
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, 5, i,
+						    &at91sam9x5_programmable_layout);
+		if (IS_ERR(hw))
+			goto err_free;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d4_systemck); i++) {
+		hw = at91_clk_register_system(regmap, sama5d4_systemck[i].n,
+					      sama5d4_systemck[i].p,
+					      sama5d4_systemck[i].id);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d4_pmc->shws[sama5d4_systemck[i].id] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d4_periphck); i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap,
+							 sama5d4_periphck[i].n,
+							 "masterck",
+							 sama5d4_periphck[i].id,
+							 &range);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d4_pmc->phws[sama5d4_periphck[i].id] = hw;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(sama5d4_periph32ck); i++) {
+		hw = at91_clk_register_sam9x5_peripheral(regmap,
+							 sama5d4_periph32ck[i].n,
+							 "h32mxck",
+							 sama5d4_periph32ck[i].id,
+							 &range);
+		if (IS_ERR(hw))
+			goto err_free;
+
+		sama5d4_pmc->phws[sama5d4_periph32ck[i].id] = hw;
+	}
+
+	of_clk_add_provider(np, of_clk_hw_pmc_get, sama5d4_pmc);
+
+	return;
+
+err_free:
+	pmc_data_free(sama5d4_pmc);
+}
+CLK_OF_DECLARE_DRIVER(sama5d4_pmc, "atmel,sama5d4-pmc", sama5d4_pmc_setup);
Signature · 7 lines
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#10 lore raw

PATCH v4 10/11 clk: at91: add dt-compat to PMC bindings

In reply to Sam Ravnborg

From: Ahmad Fatoum <[email protected]>

As the sama5d3 based microchip-ksz9477-evb board still uses the old bindings, the dt-compat.c code is ported as well. This can be removed when all in-kernel at91 boards have been ported to the new bindings.

---
 drivers/clk/at91/dt-compat.c | 961 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 961 insertions(+)
 create mode 100644 drivers/clk/at91/dt-compat.c
drivers/clk/at91/dt-compat.c new file +961 -0
new file mode 100644
index 000000000..bbd670641
@@ -0,0 +1,961 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/kernel.h>
+#include <linux/clk.h>
+#include <of.h>
+#include <driver.h>
+#include <regmap.h>
+#include <mfd/syscon.h>
+
+
+#include "pmc.h"
+
+#define MASTER_SOURCE_MAX	4
+
+#define PERIPHERAL_AT91RM9200	0
+#define PERIPHERAL_AT91SAM9X5	1
+
+#define PERIPHERAL_MAX		64
+
+#define PERIPHERAL_ID_MIN	2
+
+#define PROG_SOURCE_MAX		5
+#define PROG_ID_MAX		7
+
+#define SYSTEM_MAX_ID		31
+
+#ifdef CONFIG_HAVE_AT91_AUDIO_PLL
+static void __init of_sama5d2_clk_audio_pll_frac_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *name = np->name;
+	const char *parent_name;
+	struct regmap *regmap;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	hw = at91_clk_register_audio_pll_frac(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_frac_setup,
+	       "atmel,sama5d2-clk-audio-pll-frac",
+	       of_sama5d2_clk_audio_pll_frac_setup);
+
+static void __init of_sama5d2_clk_audio_pll_pad_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *name = np->name;
+	const char *parent_name;
+	struct regmap *regmap;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	hw = at91_clk_register_audio_pll_pad(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_pad_setup,
+	       "atmel,sama5d2-clk-audio-pll-pad",
+	       of_sama5d2_clk_audio_pll_pad_setup);
+
+static void __init of_sama5d2_clk_audio_pll_pmc_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *name = np->name;
+	const char *parent_name;
+	struct regmap *regmap;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	hw = at91_clk_register_audio_pll_pmc(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_pmc_setup,
+	       "atmel,sama5d2-clk-audio-pll-pmc",
+	       of_sama5d2_clk_audio_pll_pmc_setup);
+#endif /* CONFIG_HAVE_AT91_AUDIO_PLL */
+
+#ifdef CONFIG_HAVE_AT91_GENERATED_CLK
+#define GENERATED_SOURCE_MAX	6
+
+#define GCK_ID_I2S0		54
+#define GCK_ID_I2S1		55
+#define GCK_ID_CLASSD		59
+
+static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
+{
+	int num;
+	u32 id;
+	const char *name;
+	struct clk *hw;
+	unsigned int num_parents;
+	const char *parent_names[GENERATED_SOURCE_MAX];
+	struct device_node *gcknp;
+	struct clk_range range = CLK_RANGE(0, 0);
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > GENERATED_SOURCE_MAX)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	num = of_get_child_count(np);
+	if (!num || num > PERIPHERAL_MAX)
+		return;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	for_each_child_of_node(np, gcknp) {
+		bool pll_audio = false;
+
+		if (of_property_read_u32(gcknp, "reg", &id))
+			continue;
+
+		if (id < PERIPHERAL_ID_MIN || id >= PERIPHERAL_MAX)
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = gcknp->name;
+
+		of_at91_get_clk_range(gcknp, "atmel,clk-output-range",
+				      &range);
+
+		if (of_device_is_compatible(np, "atmel,sama5d2-clk-generated") &&
+		    (id == GCK_ID_I2S0 || id == GCK_ID_I2S1 ||
+		     id == GCK_ID_CLASSD))
+			pll_audio = true;
+
+		hw = at91_clk_register_generated(regmap, name,
+						 parent_names, num_parents,
+						 id, pll_audio, &range);
+		if (IS_ERR(hw))
+			continue;
+
+		of_clk_add_provider(gcknp, of_clk_src_simple_get, hw);
+	}
+}
+CLK_OF_DECLARE(of_sama5d2_clk_generated_setup, "atmel,sama5d2-clk-generated",
+	       of_sama5d2_clk_generated_setup);
+#endif /* CONFIG_HAVE_AT91_GENERATED_CLK */
+
+#ifdef CONFIG_HAVE_AT91_H32MX
+static void __init of_sama5d4_clk_h32mx_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *name = np->name;
+	const char *parent_name;
+	struct regmap *regmap;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	hw = at91_clk_register_h32mx(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(of_sama5d4_clk_h32mx_setup, "atmel,sama5d4-clk-h32mx",
+	       of_sama5d4_clk_h32mx_setup);
+#endif /* CONFIG_HAVE_AT91_H32MX */
+
+#ifdef CONFIG_HAVE_AT91_I2S_MUX_CLK
+#define	I2S_BUS_NR	2
+
+static void __init of_sama5d2_clk_i2s_mux_setup(struct device_node *np)
+{
+	struct regmap *regmap_sfr;
+	u8 bus_id;
+	const char *parent_names[2];
+	struct device_node *i2s_mux_np;
+	struct clk *hw;
+	int ret;
+
+	regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
+	if (IS_ERR(regmap_sfr))
+		return;
+
+	for_each_child_of_node(np, i2s_mux_np) {
+		if (of_property_read_u8(i2s_mux_np, "reg", &bus_id))
+			continue;
+
+		if (bus_id > I2S_BUS_NR)
+			continue;
+
+		ret = of_clk_parent_fill(i2s_mux_np, parent_names, 2);
+		if (ret != 2)
+			continue;
+
+		hw = at91_clk_i2s_mux_register(regmap_sfr, i2s_mux_np->name,
+					       parent_names, 2, bus_id);
+		if (IS_ERR(hw))
+			continue;
+
+		of_clk_add_provider(i2s_mux_np, of_clk_src_simple_get, hw);
+	}
+}
+CLK_OF_DECLARE(sama5d2_clk_i2s_mux, "atmel,sama5d2-clk-i2s-mux",
+	       of_sama5d2_clk_i2s_mux_setup);
+#endif /* CONFIG_HAVE_AT91_I2S_MUX_CLK */
+
+static void __init of_at91rm9200_clk_main_osc_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *name = np->name;
+	const char *parent_name;
+	struct regmap *regmap;
+	bool bypass;
+
+	of_property_read_string(np, "clock-output-names", &name);
+	bypass = of_property_read_bool(np, "atmel,osc-bypass");
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91_clk_register_main_osc(regmap, name, parent_name, bypass);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91rm9200_clk_main_osc, "atmel,at91rm9200-clk-main-osc",
+	       of_at91rm9200_clk_main_osc_setup);
+
+static void __init of_at91sam9x5_clk_main_rc_osc_setup(struct device_node *np)
+{
+	struct clk *hw;
+	u32 frequency = 0;
+	u32 accuracy = 0;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	of_property_read_string(np, "clock-output-names", &name);
+	of_property_read_u32(np, "clock-frequency", &frequency);
+	of_property_read_u32(np, "clock-accuracy", &accuracy);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91_clk_register_main_rc_osc(regmap, name, frequency, accuracy);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_main_rc_osc, "atmel,at91sam9x5-clk-main-rc-osc",
+	       of_at91sam9x5_clk_main_rc_osc_setup);
+
+static void __init of_at91rm9200_clk_main_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_name;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91_clk_register_rm9200_main(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91rm9200_clk_main, "atmel,at91rm9200-clk-main",
+	       of_at91rm9200_clk_main_setup);
+
+static void __init of_at91sam9x5_clk_main_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_names[2];
+	unsigned int num_parents;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > 2)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	hw = at91_clk_register_sam9x5_main(regmap, name, parent_names,
+					   num_parents);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_main, "atmel,at91sam9x5-clk-main",
+	       of_at91sam9x5_clk_main_setup);
+
+static struct clk_master_characteristics * __init
+of_at91_clk_master_get_characteristics(struct device_node *np)
+{
+	struct clk_master_characteristics *characteristics;
+
+	characteristics = kzalloc(sizeof(*characteristics), GFP_KERNEL);
+	if (!characteristics)
+		return NULL;
+
+	if (of_at91_get_clk_range(np, "atmel,clk-output-range", &characteristics->output))
+		goto out_free_characteristics;
+
+	of_property_read_u32_array(np, "atmel,clk-divisors",
+				   characteristics->divisors, 4);
+
+	characteristics->have_div3_pres =
+		of_property_read_bool(np, "atmel,master-clk-have-div3-pres");
+
+	return characteristics;
+
+out_free_characteristics:
+	kfree(characteristics);
+	return NULL;
+}
+
+static void __init
+of_at91_clk_master_setup(struct device_node *np,
+			 const struct clk_master_layout *layout)
+{
+	struct clk *hw;
+	unsigned int num_parents;
+	const char *parent_names[MASTER_SOURCE_MAX];
+	const char *name = np->name;
+	struct clk_master_characteristics *characteristics;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > MASTER_SOURCE_MAX)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	characteristics = of_at91_clk_master_get_characteristics(np);
+	if (!characteristics)
+		return;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91_clk_register_master(regmap, name, num_parents,
+				      parent_names, layout,
+				      characteristics);
+	if (IS_ERR(hw))
+		goto out_free_characteristics;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+	return;
+
+out_free_characteristics:
+	kfree(characteristics);
+}
+
+static void __init of_at91rm9200_clk_master_setup(struct device_node *np)
+{
+	of_at91_clk_master_setup(np, &at91rm9200_master_layout);
+}
+CLK_OF_DECLARE(at91rm9200_clk_master, "atmel,at91rm9200-clk-master",
+	       of_at91rm9200_clk_master_setup);
+
+static void __init of_at91sam9x5_clk_master_setup(struct device_node *np)
+{
+	of_at91_clk_master_setup(np, &at91sam9x5_master_layout);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_master, "atmel,at91sam9x5-clk-master",
+	       of_at91sam9x5_clk_master_setup);
+
+static void __init
+of_at91_clk_periph_setup(struct device_node *np, u8 type)
+{
+	int num;
+	u32 id;
+	struct clk *hw;
+	const char *parent_name;
+	const char *name;
+	struct device_node *periphclknp;
+	struct regmap *regmap;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	num = of_get_child_count(np);
+	if (!num || num > PERIPHERAL_MAX)
+		return;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	for_each_child_of_node(np, periphclknp) {
+		if (of_property_read_u32(periphclknp, "reg", &id))
+			continue;
+
+		if (id >= PERIPHERAL_MAX)
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = periphclknp->name;
+
+		if (type == PERIPHERAL_AT91RM9200) {
+			hw = at91_clk_register_peripheral(regmap, name,
+							  parent_name, id);
+		} else {
+			struct clk_range range = CLK_RANGE(0, 0);
+
+			of_at91_get_clk_range(periphclknp,
+					      "atmel,clk-output-range",
+					      &range);
+
+			hw = at91_clk_register_sam9x5_peripheral(regmap,
+								 name,
+								 parent_name,
+								 id, &range);
+		}
+
+		if (IS_ERR(hw))
+			continue;
+
+		of_clk_add_provider(periphclknp, of_clk_src_simple_get, hw);
+	}
+}
+
+static void __init of_at91rm9200_clk_periph_setup(struct device_node *np)
+{
+	of_at91_clk_periph_setup(np, PERIPHERAL_AT91RM9200);
+}
+CLK_OF_DECLARE(at91rm9200_clk_periph, "atmel,at91rm9200-clk-peripheral",
+	       of_at91rm9200_clk_periph_setup);
+
+static void __init of_at91sam9x5_clk_periph_setup(struct device_node *np)
+{
+	of_at91_clk_periph_setup(np, PERIPHERAL_AT91SAM9X5);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_periph, "atmel,at91sam9x5-clk-peripheral",
+	       of_at91sam9x5_clk_periph_setup);
+
+static struct clk_pll_characteristics * __init
+of_at91_clk_pll_get_characteristics(struct device_node *np)
+{
+	int i;
+	int offset;
+	u32 tmp;
+	int num_output;
+	u32 num_cells;
+	struct clk_range input;
+	struct clk_range *output;
+	u8 *out = NULL;
+	u16 *icpll = NULL;
+	struct clk_pll_characteristics *characteristics;
+
+	if (of_at91_get_clk_range(np, "atmel,clk-input-range", &input))
+		return NULL;
+
+	if (of_property_read_u32(np, "#atmel,pll-clk-output-range-cells",
+				 &num_cells))
+		return NULL;
+
+	if (num_cells < 2 || num_cells > 4)
+		return NULL;
+
+	if (!of_get_property(np, "atmel,pll-clk-output-ranges", &tmp))
+		return NULL;
+	num_output = tmp / (sizeof(u32) * num_cells);
+
+	characteristics = kzalloc(sizeof(*characteristics), GFP_KERNEL);
+	if (!characteristics)
+		return NULL;
+
+	output = kcalloc(num_output, sizeof(*output), GFP_KERNEL);
+	if (!output)
+		goto out_free_characteristics;
+
+	if (num_cells > 2) {
+		out = kcalloc(num_output, sizeof(*out), GFP_KERNEL);
+		if (!out)
+			goto out_free_output;
+	}
+
+	if (num_cells > 3) {
+		icpll = kcalloc(num_output, sizeof(*icpll), GFP_KERNEL);
+		if (!icpll)
+			goto out_free_output;
+	}
+
+	for (i = 0; i < num_output; i++) {
+		offset = i * num_cells;
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset, &tmp))
+			goto out_free_output;
+		output[i].min = tmp;
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 1, &tmp))
+			goto out_free_output;
+		output[i].max = tmp;
+
+		if (num_cells == 2)
+			continue;
+
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 2, &tmp))
+			goto out_free_output;
+		out[i] = tmp;
+
+		if (num_cells == 3)
+			continue;
+
+		if (of_property_read_u32_index(np,
+					       "atmel,pll-clk-output-ranges",
+					       offset + 3, &tmp))
+			goto out_free_output;
+		icpll[i] = tmp;
+	}
+
+	characteristics->input = input;
+	characteristics->num_output = num_output;
+	characteristics->output = output;
+	characteristics->out = out;
+	characteristics->icpll = icpll;
+	return characteristics;
+
+out_free_output:
+	kfree(icpll);
+	kfree(out);
+	kfree(output);
+out_free_characteristics:
+	kfree(characteristics);
+	return NULL;
+}
+
+static void __init
+of_at91_clk_pll_setup(struct device_node *np,
+		      const struct clk_pll_layout *layout)
+{
+	u32 id;
+	struct clk *hw;
+	struct regmap *regmap;
+	const char *parent_name;
+	const char *name = np->name;
+	struct clk_pll_characteristics *characteristics;
+
+	if (of_property_read_u32(np, "reg", &id))
+		return;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	characteristics = of_at91_clk_pll_get_characteristics(np);
+	if (!characteristics)
+		return;
+
+	hw = at91_clk_register_pll(regmap, name, parent_name, id, layout,
+				   characteristics);
+	if (IS_ERR(hw))
+		goto out_free_characteristics;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+	return;
+
+out_free_characteristics:
+	kfree(characteristics);
+}
+
+static void __init of_at91rm9200_clk_pll_setup(struct device_node *np)
+{
+	of_at91_clk_pll_setup(np, &at91rm9200_pll_layout);
+}
+CLK_OF_DECLARE(at91rm9200_clk_pll, "atmel,at91rm9200-clk-pll",
+	       of_at91rm9200_clk_pll_setup);
+
+static void __init of_at91sam9g45_clk_pll_setup(struct device_node *np)
+{
+	of_at91_clk_pll_setup(np, &at91sam9g45_pll_layout);
+}
+CLK_OF_DECLARE(at91sam9g45_clk_pll, "atmel,at91sam9g45-clk-pll",
+	       of_at91sam9g45_clk_pll_setup);
+
+static void __init of_at91sam9g20_clk_pllb_setup(struct device_node *np)
+{
+	of_at91_clk_pll_setup(np, &at91sam9g20_pllb_layout);
+}
+CLK_OF_DECLARE(at91sam9g20_clk_pllb, "atmel,at91sam9g20-clk-pllb",
+	       of_at91sam9g20_clk_pllb_setup);
+
+static void __init of_sama5d3_clk_pll_setup(struct device_node *np)
+{
+	of_at91_clk_pll_setup(np, &sama5d3_pll_layout);
+}
+CLK_OF_DECLARE(sama5d3_clk_pll, "atmel,sama5d3-clk-pll",
+	       of_sama5d3_clk_pll_setup);
+
+static void __init
+of_at91sam9x5_clk_plldiv_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_name;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91_clk_register_plldiv(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_plldiv, "atmel,at91sam9x5-clk-plldiv",
+	       of_at91sam9x5_clk_plldiv_setup);
+
+static void __init
+of_at91_clk_prog_setup(struct device_node *np,
+		       const struct clk_programmable_layout *layout)
+{
+	int num;
+	u32 id;
+	struct clk *hw;
+	unsigned int num_parents;
+	const char *parent_names[PROG_SOURCE_MAX];
+	const char *name;
+	struct device_node *progclknp;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > PROG_SOURCE_MAX)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	num = of_get_child_count(np);
+	if (!num || num > (PROG_ID_MAX + 1))
+		return;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	for_each_child_of_node(np, progclknp) {
+		if (of_property_read_u32(progclknp, "reg", &id))
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = progclknp->name;
+
+		hw = at91_clk_register_programmable(regmap, name,
+						    parent_names, num_parents,
+						    id, layout);
+		if (IS_ERR(hw))
+			continue;
+
+		of_clk_add_provider(progclknp, of_clk_src_simple_get, hw);
+	}
+}
+
+static void __init of_at91rm9200_clk_prog_setup(struct device_node *np)
+{
+	of_at91_clk_prog_setup(np, &at91rm9200_programmable_layout);
+}
+CLK_OF_DECLARE(at91rm9200_clk_prog, "atmel,at91rm9200-clk-programmable",
+	       of_at91rm9200_clk_prog_setup);
+
+static void __init of_at91sam9g45_clk_prog_setup(struct device_node *np)
+{
+	of_at91_clk_prog_setup(np, &at91sam9g45_programmable_layout);
+}
+CLK_OF_DECLARE(at91sam9g45_clk_prog, "atmel,at91sam9g45-clk-programmable",
+	       of_at91sam9g45_clk_prog_setup);
+
+static void __init of_at91sam9x5_clk_prog_setup(struct device_node *np)
+{
+	of_at91_clk_prog_setup(np, &at91sam9x5_programmable_layout);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_prog, "atmel,at91sam9x5-clk-programmable",
+	       of_at91sam9x5_clk_prog_setup);
+
+static void __init of_at91sam9260_clk_slow_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_names[2];
+	unsigned int num_parents;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents != 2)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	hw = at91_clk_register_sam9260_slow(regmap, name, parent_names,
+					    num_parents);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9260_clk_slow, "atmel,at91sam9260-clk-slow",
+	       of_at91sam9260_clk_slow_setup);
+
+#ifdef CONFIG_HAVE_AT91_SMD
+#define SMD_SOURCE_MAX		2
+
+static void __init of_at91sam9x5_clk_smd_setup(struct device_node *np)
+{
+	struct clk *hw;
+	unsigned int num_parents;
+	const char *parent_names[SMD_SOURCE_MAX];
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > SMD_SOURCE_MAX)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91sam9x5_clk_register_smd(regmap, name, parent_names,
+					 num_parents);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_smd, "atmel,at91sam9x5-clk-smd",
+	       of_at91sam9x5_clk_smd_setup);
+#endif /* CONFIG_HAVE_AT91_SMD */
+
+static void __init of_at91rm9200_clk_sys_setup(struct device_node *np)
+{
+	int num;
+	u32 id;
+	struct clk *hw;
+	const char *name;
+	struct device_node *sysclknp;
+	const char *parent_name;
+	struct regmap *regmap;
+
+	num = of_get_child_count(np);
+	if (num > (SYSTEM_MAX_ID + 1))
+		return;
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	for_each_child_of_node(np, sysclknp) {
+		if (of_property_read_u32(sysclknp, "reg", &id))
+			continue;
+
+		if (of_property_read_string(np, "clock-output-names", &name))
+			name = sysclknp->name;
+
+		parent_name = of_clk_get_parent_name(sysclknp, 0);
+
+		hw = at91_clk_register_system(regmap, name, parent_name, id);
+		if (IS_ERR(hw))
+			continue;
+
+		of_clk_add_provider(sysclknp, of_clk_src_simple_get, hw);
+	}
+}
+CLK_OF_DECLARE(at91rm9200_clk_sys, "atmel,at91rm9200-clk-system",
+	       of_at91rm9200_clk_sys_setup);
+
+#ifdef CONFIG_HAVE_AT91_USB_CLK
+#define USB_SOURCE_MAX		2
+
+static void __init of_at91sam9x5_clk_usb_setup(struct device_node *np)
+{
+	struct clk *hw;
+	unsigned int num_parents;
+	const char *parent_names[USB_SOURCE_MAX];
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	num_parents = of_clk_get_parent_count(np);
+	if (num_parents == 0 || num_parents > USB_SOURCE_MAX)
+		return;
+
+	of_clk_parent_fill(np, parent_names, num_parents);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91sam9x5_clk_register_usb(regmap, name, parent_names,
+					 num_parents);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_usb, "atmel,at91sam9x5-clk-usb",
+	       of_at91sam9x5_clk_usb_setup);
+
+static void __init of_at91sam9n12_clk_usb_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_name;
+	const char *name = np->name;
+	struct regmap *regmap;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+
+	hw = at91sam9n12_clk_register_usb(regmap, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9n12_clk_usb, "atmel,at91sam9n12-clk-usb",
+	       of_at91sam9n12_clk_usb_setup);
+
+static void __init of_at91rm9200_clk_usb_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_name;
+	const char *name = np->name;
+	u32 divisors[4] = {0, 0, 0, 0};
+	struct regmap *regmap;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+	if (!parent_name)
+		return;
+
+	of_property_read_u32_array(np, "atmel,clk-divisors", divisors, 4);
+	if (!divisors[0])
+		return;
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap))
+		return;
+	hw = at91rm9200_clk_register_usb(regmap, name, parent_name, divisors);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91rm9200_clk_usb, "atmel,at91rm9200-clk-usb",
+	       of_at91rm9200_clk_usb_setup);
+#endif /* CONFIG_HAVE_AT91_USB_CLK */
+
+#ifdef CONFIG_HAVE_AT91_UTMI
+static void __init of_at91sam9x5_clk_utmi_setup(struct device_node *np)
+{
+	struct clk *hw;
+	const char *parent_name;
+	const char *name = np->name;
+	struct regmap *regmap_pmc, *regmap_sfr;
+
+	parent_name = of_clk_get_parent_name(np, 0);
+
+	of_property_read_string(np, "clock-output-names", &name);
+
+	regmap_pmc = syscon_node_to_regmap(of_get_parent(np));
+	if (IS_ERR(regmap_pmc))
+		return;
+
+	/*
+	 * If the device supports different mainck rates, this value has to be
+	 * set in the UTMI Clock Trimming register.
+	 * - 9x5: mainck supports several rates but it is indicated that a
+	 *   12 MHz is needed in case of USB.
+	 * - sama5d3 and sama5d2: mainck supports several rates. Configuring
+	 *   the FREQ field of the UTMI Clock Trimming register is mandatory.
+	 * - sama5d4: mainck is at 12 MHz.
+	 *
+	 * We only need to retrieve sama5d3 or sama5d2 sfr regmap.
+	 */
+	regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d3-sfr");
+	if (IS_ERR(regmap_sfr)) {
+		regmap_sfr = syscon_regmap_lookup_by_compatible("atmel,sama5d2-sfr");
+		if (IS_ERR(regmap_sfr))
+			regmap_sfr = NULL;
+	}
+
+	hw = at91_clk_register_utmi(regmap_pmc, regmap_sfr, name, parent_name);
+	if (IS_ERR(hw))
+		return;
+
+	of_clk_add_provider(np, of_clk_src_simple_get, hw);
+}
+CLK_OF_DECLARE(at91sam9x5_clk_utmi, "atmel,at91sam9x5-clk-utmi",
+	       of_at91sam9x5_clk_utmi_setup);
+#endif /* CONFIG_HAVE_AT91_UTMI */
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#11 lore raw

PATCH v4 11/11 clk: at91: update to PMC bindings

In reply to Sam Ravnborg

Based on kernel 5.0-rc6 update at91 clk support
to match the new PMC bindings.

Manually added all changes done in the kernel from 4.9-rc3 to 5.0-rc6. New drivers required was added as seperate commits.

This includes dt-compat code required to support at91sam5d3, as this is not yet ported to use the new PMC bindings.

clk-programmable saw some extra changes - it had never been bulit. It is used only by at91sama5d2 - and barebox has no board support for this cpu (yet).

The CONFIG_SOC symbols is used to select the relevant drivers. CONFIG_SOC_SAM9 selects several drivers, and in the future this can be split to keep the image size down.

In the kernel CLK_OF_DECLARE_DRIVER() can be used for a two step init. In barebox this is a simple one step init.
It was added to have less differences between the kernel and the barebox versions of the drivers.

---
 arch/arm/mach-at91/Kconfig          |  17 ++-
 drivers/clk/at91/Makefile           |   6 +
 drivers/clk/at91/clk-generated.c    | 185 +++++----------------------
 drivers/clk/at91/clk-h32mx.c        |  55 ++++----
 drivers/clk/at91/clk-main.c         | 112 +---------------
 drivers/clk/at91/clk-master.c       |  94 +-------------
 drivers/clk/at91/clk-peripheral.c   |  82 +-----------
 drivers/clk/at91/clk-pll.c          | 174 +------------------------
 drivers/clk/at91/clk-plldiv.c       |  27 +---
 drivers/clk/at91/clk-programmable.c |  83 +-----------
 drivers/clk/at91/clk-slow.c         |  33 +----
 drivers/clk/at91/clk-smd.c          |  33 +----
 drivers/clk/at91/clk-system.c       |  42 +-----
 drivers/clk/at91/clk-usb.c          |  94 +-------------
 drivers/clk/at91/clk-utmi.c         | 100 +++++++++------
 drivers/clk/at91/pmc.c              | 248 ++++++++++++++++++++++++++++++++++++
 drivers/clk/at91/pmc.h              | 169 ++++++++++++++++++++++++
 include/linux/clk.h                 |   7 +
 include/soc/at91/atmel-sfr.h        |  34 +++++
 19 files changed, 620 insertions(+), 975 deletions(-)
 create mode 100644 include/soc/at91/atmel-sfr.h
arch/arm/mach-at91/Kconfig +12 -5
index bb398716f..efed73827 100644
@@ -53,6 +53,9 @@ config SOC_AT91SAM9
 	select AT91SAM9_SMC
 	select CLOCKSOURCE_ATMEL_PIT
 	select PINCTRL
+	select HAVE_AT91_SMD
+	select HAVE_AT91_USB_CLK
+	select HAVE_AT91_UTMI
 
 config SOC_SAMA5
 	bool
@@ -69,12 +72,19 @@ config SOC_SAMA5D3
 	select SOC_SAMA5
 	select AT91SAM9_SMC
 	select CLOCKSOURCE_ATMEL_PIT
+	select HAVE_AT91_SMD
+	select HAVE_AT91_USB_CLK
+	select HAVE_AT91_UTMI
 
 config SOC_SAMA5D4
 	bool
 	select SOC_SAMA5
 	select AT91SAM9_SMC
 	select CLOCKSOURCE_ATMEL_PIT
+	select HAVE_AT91_H32MX
+	select HAVE_AT91_SMD
+	select HAVE_AT91_USB_CLK
+	select HAVE_AT91_UTMI
 
 config ARCH_TEXT_BASE
 	hex
@@ -98,8 +108,9 @@ comment "Atmel AT91 System-on-Chip"
 config SOC_AT91RM9200
 	bool
 	select CPU_ARM920T
-	select HAVE_AT91_DBGU0
 	select HAS_AT91_ETHER
+	select HAVE_AT91_DBGU0
+	select HAVE_AT91_USB_CLK
 
 config SOC_AT91SAM9260
 	bool
@@ -138,9 +149,6 @@ config SOC_AT91SAM9X5
 	select SOC_AT91SAM9
 	select HAVE_AT91_DBGU0
 	select HAS_MACB
-	select HAVE_AT91_SMD
-	select HAVE_AT91_USB_CLK
-	select HAVE_AT91_UTMI
 	select COMMON_CLK_OF_PROVIDER
 	help
 	  Select this if you are using one of Atmel's AT91SAM9x5 family SoC.
@@ -538,7 +546,6 @@ config MACH_AT91SAM9263EK
 	depends on ARCH_AT91SAM9263
 	select OFDEVICE
 	select COMMON_CLK_OF_PROVIDER
-	select HAVE_AT91_USB_CLK
 	select HAVE_NAND_ATMEL_BUSWIDTH_16
 	select HAVE_AT91_BOOTSTRAP
 	select AT91SAM926X_BOARD_INIT
drivers/clk/at91/Makefile +6 -0
index 13e67bd35..bf9b27f0f 100644
@@ -11,3 +11,9 @@ obj-$(CONFIG_HAVE_AT91_USB_CLK)		+= clk-usb.o
 obj-$(CONFIG_HAVE_AT91_SMD)		+= clk-smd.o
 obj-$(CONFIG_HAVE_AT91_H32MX)		+= clk-h32mx.o
 obj-$(CONFIG_HAVE_AT91_GENERATED_CLK)	+= clk-generated.o
+obj-$(CONFIG_SOC_AT91SAM9) 		+= at91sam9260.o
+obj-$(CONFIG_SOC_AT91SAM9) 		+= at91sam9rl.o
+obj-$(CONFIG_SOC_AT91SAM9) 		+= at91sam9x5.o
+obj-$(CONFIG_SOC_SAMA5D2) 		+= sama5d2.o
+obj-$(CONFIG_SOC_SAMA5D3)		+= dt-compat.o
+obj-$(CONFIG_SOC_SAMA5D4) 		+= sama5d4.o
drivers/clk/at91/clk-generated.c +32 -153

305 lines not on this page · raw message

drivers/clk/at91/clk-h32mx.c +24 -31

103 lines not on this page · raw message

drivers/clk/at91/clk-main.c +5 -107

165 lines not on this page · raw message

drivers/clk/at91/clk-master.c +3 -91

122 lines not on this page · raw message

drivers/clk/at91/clk-peripheral.c +2 -80

109 lines not on this page · raw message

drivers/clk/at91/clk-pll.c +5 -169

208 lines not on this page · raw message

drivers/clk/at91/clk-plldiv.c +1 -26
index 917108e84..98d79ef59 100644
@@ -78,7 +78,7 @@ static const struct clk_ops plldiv_ops = {
 	.set_rate = clk_plldiv_set_rate,
 };
 
-static struct clk *
+struct clk *
 at91_clk_register_plldiv(struct regmap *regmap, const char *name,
 			 const char *parent_name)
 {
@@ -108,28 +108,3 @@ at91_clk_register_plldiv(struct regmap *regmap, const char *name,
 
 	return &plldiv->clk;
 }
-
-static int
-of_at91sam9x5_clk_plldiv_setup(struct device_node *np)
-{
-	struct clk *clk;
-	const char *parent_name;
-	const char *name = np->name;
-	struct regmap *regmap;
-
-	parent_name = of_clk_get_parent_name(np, 0);
-
-	of_property_read_string(np, "clock-output-names", &name);
-
-	regmap = syscon_node_to_regmap(of_get_parent(np));
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	clk = at91_clk_register_plldiv(regmap, name, parent_name);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	return of_clk_add_provider(np, of_clk_src_simple_get, clk);
-}
-CLK_OF_DECLARE(at91sam9x5_clk_plldiv, "atmel,at91sam9x5-clk-plldiv",
-	       of_at91sam9x5_clk_plldiv_setup);
drivers/clk/at91/clk-programmable.c +4 -79

118 lines not on this page · raw message

drivers/clk/at91/clk-slow.c +1 -32
index d4981e7b4..d19f7e15a 100644
@@ -12,7 +12,6 @@
 
 #include <common.h>
 #include <clock.h>
-#include <of.h>
 #include <io.h>
 #include <linux/list.h>
 #include <linux/clk.h>
@@ -44,7 +43,7 @@ static const struct clk_ops sam9260_slow_ops = {
 	.get_parent = clk_sam9260_slow_get_parent,
 };
 
-static struct clk * __init
+struct clk * __init
 at91_clk_register_sam9260_slow(struct regmap *regmap,
 			       const char *name,
 			       const char **parent_names,
@@ -76,33 +75,3 @@ at91_clk_register_sam9260_slow(struct regmap *regmap,
 
 	return &slowck->clk;
 }
-
-static int of_at91sam9260_clk_slow_setup(struct device_node *np)
-{
-	struct clk *clk;
-	const char *parent_names[2];
-	unsigned int num_parents;
-	const char *name = np->name;
-	struct regmap *regmap;
-
-	num_parents = of_clk_get_parent_count(np);
-	if (num_parents != 2)
-		return -EINVAL;
-
-	of_clk_parent_fill(np, parent_names, num_parents);
-	regmap = syscon_node_to_regmap(of_get_parent(np));
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	of_property_read_string(np, "clock-output-names", &name);
-
-	clk = at91_clk_register_sam9260_slow(regmap, name, parent_names,
-					     num_parents);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	return of_clk_add_provider(np, of_clk_src_simple_get, clk);
-}
-
-CLK_OF_DECLARE(at91sam9260_clk_slow, "atmel,at91sam9260-clk-slow",
-	       of_at91sam9260_clk_slow_setup);
drivers/clk/at91/clk-smd.c +1 -32
index 65c53efbb..e81f0d4d4 100644
@@ -10,7 +10,6 @@
 
 #include <common.h>
 #include <clock.h>
-#include <of.h>
 #include <io.h>
 #include <linux/list.h>
 #include <linux/clk.h>
@@ -115,7 +114,7 @@ static const struct clk_ops at91sam9x5_smd_ops = {
 	.set_rate = at91sam9x5_clk_smd_set_rate,
 };
 
-static struct clk *
+struct clk *
 at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
 			    const char **parent_names, u8 num_parents)
 {
@@ -140,33 +139,3 @@ at91sam9x5_clk_register_smd(struct regmap *regmap, const char *name,
 
 	return &smd->clk;
 }
-
-static int of_at91sam9x5_clk_smd_setup(struct device_node *np)
-{
-	struct clk *clk;
-	unsigned int num_parents;
-	const char *parent_names[SMD_SOURCE_MAX];
-	const char *name = np->name;
-	struct regmap *regmap;
-
-	num_parents = of_clk_get_parent_count(np);
-	if (num_parents == 0 || num_parents > SMD_SOURCE_MAX)
-		return -EINVAL;
-
-	of_clk_parent_fill(np, parent_names, num_parents);
-
-	of_property_read_string(np, "clock-output-names", &name);
-
-	regmap = syscon_node_to_regmap(of_get_parent(np));
-	if (IS_ERR(regmap))
-		return PTR_ERR(regmap);
-
-	clk = at91sam9x5_clk_register_smd(regmap, name, parent_names,
-					  num_parents);
-	if (IS_ERR(clk))
-		return PTR_ERR(clk);
-
-	return of_clk_add_provider(np, of_clk_src_simple_get, clk);
-}
-CLK_OF_DECLARE(at91sam9x5_clk_smd, "atmel,at91sam9x5-clk-smd",
-	       of_at91sam9x5_clk_smd_setup);
drivers/clk/at91/clk-system.c +1 -41

57 lines not on this page · raw message

drivers/clk/at91/clk-usb.c +3 -91

121 lines not on this page · raw message

drivers/clk/at91/clk-utmi.c +62 -38

161 lines not on this page · raw message

drivers/clk/at91/pmc.c +248 -0

259 lines not on this page · raw message

drivers/clk/at91/pmc.h +169 -0

182 lines not on this page · raw message

include/linux/clk.h +7 -0
index 978a0a8a9..20498574f 100644
@@ -385,6 +385,11 @@ int of_clk_add_provider(struct device_node *np,
 			struct clk *(*clk_src_get)(struct of_phandle_args *args,
 						   void *data),
 			void *data);
+
+static inline unsigned int clk_get_num_parents(const struct clk *hw)
+{
+	return hw->num_parents;
+}
 #else
 
 
@@ -430,6 +435,8 @@ static inline int of_clk_add_provider(struct device_node *np,
 }
 #endif
 
+#define CLK_OF_DECLARE_DRIVER(name, compat, fn) CLK_OF_DECLARE(name, compat, fn)
+
 struct string_list;
 
 int clk_name_complete(struct string_list *sl, char *instr);
include/soc/at91/atmel-sfr.h new file +34 -0
new file mode 100644
index 000000000..482337af0
@@ -0,0 +1,34 @@
+/*
+ * Atmel SFR (Special Function Registers) register offsets and bit definitions.
+ *
+ * Copyright (C) 2016 Atmel
+ *
+ * Author: Ludovic Desroches <[email protected]>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _LINUX_MFD_SYSCON_ATMEL_SFR_H
+#define _LINUX_MFD_SYSCON_ATMEL_SFR_H
+
+#define AT91_SFR_DDRCFG		0x04	/* DDR Configuration Register */
+/* 0x08 ~ 0x0c: Reserved */
+#define AT91_SFR_OHCIICR	0x10	/* OHCI INT Configuration Register */
+#define AT91_SFR_OHCIISR	0x14	/* OHCI INT Status Register */
+#define AT91_SFR_UTMICKTRIM	0x30	/* UTMI Clock Trimming Register */
+#define AT91_SFR_I2SCLKSEL	0x90	/* I2SC Register */
+
+/* Field definitions */
+#define AT91_OHCIICR_SUSPEND_A	BIT(8)
+#define AT91_OHCIICR_SUSPEND_B	BIT(9)
+#define AT91_OHCIICR_SUSPEND_C	BIT(10)
+
+#define AT91_OHCIICR_USB_SUSPEND	(AT91_OHCIICR_SUSPEND_A | \
+					 AT91_OHCIICR_SUSPEND_B | \
+					 AT91_OHCIICR_SUSPEND_C)
+
+#define AT91_UTMICKTRIM_FREQ	GENMASK(1, 0)
+
+#endif /* _LINUX_MFD_SYSCON_ATMEL_SFR_H */
Signature · 7 lines
2.12.0


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Tested-by on the v4 series
#12 lore raw
In reply to Sam Ravnborg
Quoted 11 lines · Sam Ravnborg

Hi all.

The following patchset add supports for the PMC clk bindings for at91.
The patchset was tested on:
- at91sam9264ek - DT enabled
- sama5d4-xplained - non DT

Ladislav and Ahmad did some additional testing on the boards they have available.

Please await feedback from Ahmad and Ladislav before applying to master.

Serie applied on top of current master (plus my board support patches).

$ echo $soc.name   
at91sam9g20

Btw, space spared by changing malloc implementation (now CONFIG_MALLOC_TLSF) was almost all eaten by additional compatible code, but as it still fits dataflash, let's optimize later :)

Quoted 9 lines

The patchset includes sama5d2.c which is not used today. I have a sama5d27-som1-ek board that I hope to find time to work with and then this will be needed.

Patch was made on top of barebox master:
3c2dee2e7d62a32ba85f7bf94bb7abf5b4f09dab ("doc: bootchooser: add retry handling to algorithm description")

On stray patch sneaked in - to kill a warning.

Quoted 7 lines

The patchset triggers some checkpatch warnings:
- SPDX, the barebox variant of checkpatch is missing support for these
- Too long lines. As code is copied from the kernel I left them as-is

Comments/review/testing very welcome!
Note: I am at Embedded World Nürenberg for a few days, so no swift repsonses to feedback/comments.

Hmm, that's a shame. Seems I'll miss it again :-/

Quoted 61 lines

v4:
- added dt-compat required by sama5d3 (Ahmad)
- added syscon_regmap_lookup_by_compatible (Ahmad)
- Rebased on master
- Added SOC_SAMA5D2 - as it is used later Not used for now, but needed later

v3:
- fixed build breakage in sama5d4 and clk-h32mx
- added Tested-by: Ladislav Michl <[email protected]> to relevant patches Not all, as only a subet was covered by the test

v2:
- Split up in smaller patches
- Fix builds in various configs
- Reworked Kconfig changes
- Fix checkpatch warnings (mostly whitespace)

v1:
- Posted to mailing list as a WIP patch

Sam

Ahmad Fatoum (2):
regmap: Implement syscon_regmap_lookup_by_compatible()
clk: at91: add dt-compat to PMC bindings

Sam Ravnborg (9):

      arm: at91: fix at91_configure_usart6 warning
      clocksource: Do not mix depends and select for ATMEL_PIT
      arm: at91: add SOC_SAMA5{D2,D3,D4}
      clk: at91: add at91sam9260
      clk: at91: add at91sam9rl
      clk: at91: add at91sam9x5
      clk: at91: add sama5d2
      clk: at91: add sama5d4
      clk: at91: update to PMC bindings
 arch/arm/mach-at91/Kconfig              |  37 +-
 arch/arm/mach-at91/include/mach/board.h |   1 +
 drivers/clk/at91/Makefile               |   6 +
 drivers/clk/at91/at91sam9260.c          | 497 +++++++++++++++++
 drivers/clk/at91/at91sam9rl.c           | 177 ++++++
 drivers/clk/at91/at91sam9x5.c           | 315 +++++++++++
 drivers/clk/at91/clk-generated.c        | 185 ++----
 drivers/clk/at91/clk-h32mx.c            |  55 +-
 drivers/clk/at91/clk-main.c             | 112 +---
 drivers/clk/at91/clk-master.c           |  94 +---
 drivers/clk/at91/clk-peripheral.c       |  82 +--
 drivers/clk/at91/clk-pll.c              | 174 +-----
 drivers/clk/at91/clk-plldiv.c           |  27 +-
 drivers/clk/at91/clk-programmable.c     |  83 +--
 drivers/clk/at91/clk-slow.c             |  33 +-
 drivers/clk/at91/clk-smd.c              |  33 +-
 drivers/clk/at91/clk-system.c           |  42 +-
 drivers/clk/at91/clk-usb.c              |  94 +---
 drivers/clk/at91/clk-utmi.c             | 100 ++--
 drivers/clk/at91/dt-compat.c            | 961 ++++++++++++++++++++++++++++++++
 drivers/clk/at91/pmc.c                  | 248 +++++++++
 drivers/clk/at91/pmc.h                  | 169 ++++++
Quoted 8 lines
 drivers/clk/at91/sama5d2.c              | 342 ++++++++++++
 drivers/clk/at91/sama5d4.c              | 270 +++++++++
 drivers/clocksource/Kconfig             |   1 -
 drivers/mfd/syscon.c                    |  14 +
 include/linux/clk.h                     |   7 +
 include/mfd/syscon.h                    |   5 +
 include/soc/at91/atmel-sfr.h            |  34 ++
 29 files changed, 3220 insertions(+), 978 deletions(-)

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Applied
#13 lore raw
In reply to Sam Ravnborg
Quoted 12 lines · Sam Ravnborg

Hi all.

Sam Ravnborg (9):

      arm: at91: fix at91_configure_usart6 warning
      clocksource: Do not mix depends and select for ATMEL_PIT
      arm: at91: add SOC_SAMA5{D2,D3,D4}
      clk: at91: add at91sam9260
      clk: at91: add at91sam9rl
      clk: at91: add at91sam9x5
      clk: at91: add sama5d2
      clk: at91: add sama5d4
      clk: at91: update to PMC bindings

Applied, thanks

Sascha

Signature · 9 lines
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Industrial Linux Solutions                 | http://www.pengutronix.de/  |
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#14 lore raw
In reply to Sam Ravnborg
Quoted 11 lines · Sam Ravnborg

Hi all.

The following patchset add supports for the PMC clk bindings for at91.
The patchset was tested on:
- at91sam9264ek - DT enabled
- sama5d4-xplained - non DT

Ladislav and Ahmad did some additional testing on the boards they have available.

Please await feedback from Ahmad and Ladislav before applying to master.

I don't have the hardware to test these at the moment, but from the changelog, I assume it should be okay.

Quoted 89 lines

The patchset includes sama5d2.c which is not used today. I have a sama5d27-som1-ek board that I hope to find time to work with and then this will be needed.

Patch was made on top of barebox master:
3c2dee2e7d62a32ba85f7bf94bb7abf5b4f09dab ("doc: bootchooser: add retry handling to algorithm description")

On stray patch sneaked in - to kill a warning.

The patchset triggers some checkpatch warnings:
- SPDX, the barebox variant of checkpatch is missing support for these
- Too long lines. As code is copied from the kernel I left them as-is

Comments/review/testing very welcome!
Note: I am at Embedded World Nürenberg for a few days, so no swift repsonses to feedback/comments.

v4:
- added dt-compat required by sama5d3 (Ahmad)
- added syscon_regmap_lookup_by_compatible (Ahmad)
- Rebased on master
- Added SOC_SAMA5D2 - as it is used later Not used for now, but needed later

v3:
- fixed build breakage in sama5d4 and clk-h32mx
- added Tested-by: Ladislav Michl <[email protected]> to relevant patches Not all, as only a subet was covered by the test

v2:
- Split up in smaller patches
- Fix builds in various configs
- Reworked Kconfig changes
- Fix checkpatch warnings (mostly whitespace)

v1:
- Posted to mailing list as a WIP patch

Sam

Ahmad Fatoum (2):
regmap: Implement syscon_regmap_lookup_by_compatible()
clk: at91: add dt-compat to PMC bindings

Sam Ravnborg (9):

      arm: at91: fix at91_configure_usart6 warning
      clocksource: Do not mix depends and select for ATMEL_PIT
      arm: at91: add SOC_SAMA5{D2,D3,D4}
      clk: at91: add at91sam9260
      clk: at91: add at91sam9rl
      clk: at91: add at91sam9x5
      clk: at91: add sama5d2
      clk: at91: add sama5d4
      clk: at91: update to PMC bindings
 arch/arm/mach-at91/Kconfig              |  37 +-
 arch/arm/mach-at91/include/mach/board.h |   1 +
 drivers/clk/at91/Makefile               |   6 +
 drivers/clk/at91/at91sam9260.c          | 497 +++++++++++++++++
 drivers/clk/at91/at91sam9rl.c           | 177 ++++++
 drivers/clk/at91/at91sam9x5.c           | 315 +++++++++++
 drivers/clk/at91/clk-generated.c        | 185 ++----
 drivers/clk/at91/clk-h32mx.c            |  55 +-
 drivers/clk/at91/clk-main.c             | 112 +---
 drivers/clk/at91/clk-master.c           |  94 +---
 drivers/clk/at91/clk-peripheral.c       |  82 +--
 drivers/clk/at91/clk-pll.c              | 174 +-----
 drivers/clk/at91/clk-plldiv.c           |  27 +-
 drivers/clk/at91/clk-programmable.c     |  83 +--
 drivers/clk/at91/clk-slow.c             |  33 +-
 drivers/clk/at91/clk-smd.c              |  33 +-
 drivers/clk/at91/clk-system.c           |  42 +-
 drivers/clk/at91/clk-usb.c              |  94 +---
 drivers/clk/at91/clk-utmi.c             | 100 ++--
 drivers/clk/at91/dt-compat.c            | 961 ++++++++++++++++++++++++++++++++
 drivers/clk/at91/pmc.c                  | 248 +++++++++
 drivers/clk/at91/pmc.h                  | 169 ++++++
 drivers/clk/at91/sama5d2.c              | 342 ++++++++++++
 drivers/clk/at91/sama5d4.c              | 270 +++++++++
 drivers/clocksource/Kconfig             |   1 -
 drivers/mfd/syscon.c                    |  14 +
 include/linux/clk.h                     |   7 +
 include/mfd/syscon.h                    |   5 +
 include/soc/at91/atmel-sfr.h            |  34 ++
 29 files changed, 3220 insertions(+), 978 deletions(-)
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