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clocksource: npcm: add NPCM7xx timer driver

PATCH New Tomer Maimon 1 participant 3 messages Dec 18, 2017

Subsystems (3)
Device tree bindings Clocksource, clockevent drivers Arm/nuvoton npcm architecture
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Tomer Maimon

author maintainer
#0 lore raw

v2 cover clocksource: npcm: add NPCM7xx timer driver

Changes since version 1:
- Update GPL licence message

This patch set adds clocksource support for the Nuvoton NPCM7xx Baseboard Management Controller (BMC).

The clocksource Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx BMC, while TIMER0 serves as clockevent and TIMER1 serves as clocksource.

Tomer Maimon (2):
dt-binding: timer: document NPCM7xx timer DT bindings
clocksource: npcm: add NPCM7xx timer driver

 .../bindings/timer/nuvoton,npcm7xx-timer.txt       |  25 +++
 drivers/clocksource/Kconfig                        |   8 +
 drivers/clocksource/Makefile                       |   1 +
 drivers/clocksource/npcm7xx-timer.c                | 238 +++++++++++++++++++++
 4 files changed, 272 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt
 create mode 100644 drivers/clocksource/npcm7xx-timer.c
Signature · 1 line
2.14.1
author maintainer
#1 lore raw

PATCH v2 1/2 dt-binding: timer: document NPCM7xx timer DT bindings

Added device tree binding documentation for Nuvoton NPCM7xx timer.

Signed-off-by Tomer Maimon <[email protected]>
---
 .../bindings/timer/nuvoton,npcm7xx-timer.txt       | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt
Documentation/devicetree/bindings/timer/nuvoton,npcm7xx-timer.txt new file +25 -0
new file mode 100644
index 000000000000..c5150522e618
@@ -0,0 +1,25 @@
+Nuvoton NPCM7xx timer
+
+Nuvoton NPCM7xx have three timer modules, each timer module provides five 24-bit
+timer counters.
+
+Required properties:
+- compatible      : "nuvoton,npcm750-timer" for Poleg NPCM750.
+- reg             : Offset and length of the register set for the device.
+- interrupts      : Contain the timer interrupt with flags for
+                    falling edge.
+
+Required clocking property, have to be one of:
+- clocks          : phandle of timer reference clock.
+- clock-frequency : The frequency in Hz of the clock that drives the NPCM7xx
+                    timer (usually 25000000).
+
+Example:
+
+timer@f0008000 {
+    compatible = "nuvoton,npcm750-timer";
+    interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
+    reg = <0xf0008000 0x1000>;
+    clocks = <&clk NPCM7XX_CLK_TIMER>;
+};
+
Signature · 1 line
2.14.1
author maintainer
#2 lore raw

PATCH v2 2/2 clocksource: npcm: add NPCM7xx timer driver

In reply to Tomer Maimon

Add Nuvoton BMC NPCM7xx timer driver.

the clocksource Enable 24-bit TIMER0 and TIMER1 counters, while TIMER0 serves as clockevent and TIMER1 serves as clocksource.

Signed-off-by Tomer Maimon <[email protected]>
---
 drivers/clocksource/Kconfig         |   8 ++
 drivers/clocksource/Makefile        |   1 +
 drivers/clocksource/npcm7xx-timer.c | 238 ++++++++++++++++++++++++++++++++++++
 3 files changed, 247 insertions(+)
 create mode 100644 drivers/clocksource/npcm7xx-timer.c
drivers/clocksource/Kconfig +8 -0
index 54a67f8a28eb..4639697d0e6c 100644
@@ -140,6 +140,14 @@ config VT8500_TIMER
 	help
 	  Enables support for the VT8500 driver.
 
+config NPCM7XX_TIMER
+	bool "NPCM7xx timer driver" if COMPILE_TEST
+	depends on HAS_IOMEM
+	select CLKSRC_MMIO
+	help
+	  Enable 24-bit TIMER0 and TIMER1 counters in the NPCM7xx arcithcture,
+	  While TIMER0 serves as clockevent and TIMER1 serves as clocksource.
+
 config CADENCE_TTC_TIMER
 	bool "Cadence TTC timer driver" if COMPILE_TEST
 	depends on COMMON_CLK
drivers/clocksource/Makefile +1 -0
index 6df949402dfc..aab1ea034ec0 100644
@@ -53,6 +53,7 @@ obj-$(CONFIG_CLKSRC_TI_32K)	+= timer-ti-32k.o
 obj-$(CONFIG_CLKSRC_NPS)	+= timer-nps.o
 obj-$(CONFIG_OXNAS_RPS_TIMER)	+= timer-oxnas-rps.o
 obj-$(CONFIG_OWL_TIMER)		+= owl-timer.o
+obj-$(CONFIG_NPCM7XX_TIMER)	+= npcm7xx-timer.o
 
 obj-$(CONFIG_ARC_TIMERS)		+= arc_timer.o
 obj-$(CONFIG_ARM_ARCH_TIMER)		+= arm_arch_timer.o
drivers/clocksource/npcm7xx-timer.c new file +238 -0

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Signature · 1 line
2.14.1