Enable cpufreq for IPQ5332 & IPQ9574
Subsystems (7)
v5 cover Enable cpufreq for IPQ5332 & IPQ9574
Depends On:
https://lore.kernel.org/lkml/[email protected]/T/
This patch series aims to enable cpufreq for IPQ5332 and IPQ9574. For IPQ5332, a minor enhancement to Stromer Plus ops and a safe source switch is needed before cpu freq can be enabled.
These are also included in this series. Posting this as a single series. Please let me know if this is not correct, will split in the subsequent revisions.
Passed the following DT related validations
make W=1 ARCH=arm64 -j16 DT_CHECKER_FLAGS='-v -m' dt_binding_check DT_SCHEMA_FILES=qcom make W=1 ARCH=arm64 -j16 CHECK_DTBS=y DT_SCHEMA_FILES=qcom dtbs_check
For IPQ5332:
~~~~~~~~~~~
* This patch series introduces stromer plus ops which builds on stromer ops and implements a different set_rate and determine_rate.
A different set_rate is needed since stromer plus PLLs do not support dynamic frequency scaling. To switch between frequencies, we have to shut down the PLL, configure the L and ALPHA values and turn on again. So introduce the separate set of ops for Stromer Plus PLL.
* Update ipq_pll_stromer_plus to use clk_alpha_pll_stromer_plus_ops instead of clk_alpha_pll_stromer_ops.
* Set 'l' value to a value that is supported on all SKUs.
* Provide safe source switch for a53pll
* Include IPQ5332 in cpufreq nvmem framework
* Add OPP details to device tree
For IPQ9574:
~~~~~~~~~~~
* Include IPQ9574 in cpufreq nvmem framework
* Add OPP details to device tree
Removed 2 patches from V1 as they have been merged
* dt-bindings: cpufreq: qcom-cpufreq-nvmem: document IPQ5332
* dt-bindings: cpufreq: qcom-cpufreq-nvmem: document IPQ9574
v4: Included a patch to fix 'kernel test robot' build error --
https://lore.kernel.org/r/[email protected]/
v5: Use devm_clk_notifier_register
Merge IPQ53xx and IPQ95xx cases with APQ8096 for speed bin selection Add reviewed by tags
Varadarajan Narayanan (9):
clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
clk: qcom: clk-alpha-pll: introduce stromer plus ops
clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
cpufreq: qti: Enable cpufreq for ipq53xx
arm64: dts: qcom: ipq5332: populate the opp table based on the eFuse
cpufreq: qti: Introduce cpufreq for ipq95xx
arm64: dts: qcom: ipq9574: populate the opp table based on the eFuse
arch/arm64/boot/dts/qcom/ipq5332.dtsi | 19 +++++++++-- arch/arm64/boot/dts/qcom/ipq9574.dtsi | 21 +++++++++++- drivers/clk/qcom/Kconfig | 1 + drivers/clk/qcom/apss-ipq-pll.c | 4 +-- drivers/clk/qcom/apss-ipq6018.c | 58 +++++++++++++++++++++++++++++++- drivers/clk/qcom/clk-alpha-pll.c | 63 +++++++++++++++++++++++++++++++++++ drivers/clk/qcom/clk-alpha-pll.h | 1 + drivers/cpufreq/cpufreq-dt-platdev.c | 2 ++ drivers/cpufreq/qcom-cpufreq-nvmem.c | 12 +++++++ 9 files changed, 174 insertions(+), 7 deletions(-)
Signature · 1 line
2.7.4
PATCH v5 1/9 clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
The config IPQ_APSS_6018 should depend on QCOM_SMEM, to avoid the following error reported by 'kernel test robot'
loongarch64-linux-ld: drivers/clk/qcom/apss-ipq6018.o: in function `apss_ipq6018_probe': >> apss-ipq6018.c:(.text+0xd0): undefined reference to `qcom_smem_get_soc_id'
---
v5: Update commit log with the error message
--- drivers/clk/qcom/Kconfig | 1 + 1 file changed, 1 insertion(+)
drivers/clk/qcom/Kconfig +1 -0
@@ -131,6 +131,7 @@ config IPQ_APSS_6018 tristate "IPQ APSS Clock Controller" select IPQ_APSS_PLL depends on QCOM_APCS_IPC || COMPILE_TEST + depends on QCOM_SMEM help Support for APSS clock controller on IPQ platforms. The APSS clock controller manages the Mux and enable block that feeds the
Signature · 1 line
2.7.4
Re: [PATCH v5 1/9] clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
Quoted 6 lines · Varadarajan Narayanan
The config
IPQ_APSS_6018should depend onQCOM_SMEM, to avoid the following error reported by 'kernel test robot'loongarch64-linux-ld: drivers/clk/qcom/apss-ipq6018.o: in function `apss_ipq6018_probe': >> apss-ipq6018.c:(.text+0xd0): undefined reference to `qcom_smem_get_soc_id'
Quoted 7 lines
Fixes 5e77b4ef1b19 ("clk: qcom: Add ipq6018 apss clock controller")Reported-by kernel test robot <[email protected]>Signed-off-by Varadarajan Narayanan <[email protected]>---
v5: Update commit log with the error message
---
Konrad
PATCH v5 2/9 clk: qcom: clk-alpha-pll: introduce stromer plus ops
In reply to Varadarajan NarayananStromer plus APSS PLL does not support dynamic frequency scaling. To switch between frequencies, we have to shut down the PLL, configure the L and ALPHA values and turn on again. So introduce the separate set of ops for Stromer Plus PLL.
---
v4: Ensure PLL is enabled before re-enabling
v3: Use prepare/unprepare instead of disable/enable in clk_alpha_pll_stromer_plus_ops
v2: Use clk_alpha_pll_stromer_determine_rate, instead of adding new
clk_alpha_pll_stromer_plus_determine_rate as the alpha pll width is same for both
Fix review comments
udelay(50) -> usleep_range(50, 60) Remove SoC-specific from print message
--- drivers/clk/qcom/clk-alpha-pll.c | 63 ++++++++++++++++++++++++++++++++++++++++ drivers/clk/qcom/clk-alpha-pll.h | 1 + 2 files changed, 64 insertions(+)
drivers/clk/qcom/clk-alpha-pll.c +63 -0
@@ -2508,3 +2508,66 @@ const struct clk_ops clk_alpha_pll_stromer_ops = { .set_rate = clk_alpha_pll_stromer_set_rate, };EXPORT_SYMBOL_GPL (clk_alpha_pll_stromer_ops); + +static int clk_alpha_pll_stromer_plus_set_rate (struct clk_hw *hw, +unsigned long rate, +unsigned long prate) +{ +struct clk_alpha_pll *pll =to_clk_alpha_pll (hw); +u32 l, alpha_width =pll_alpha_width (pll); +int ret, pll_mode; +u64 a; + + rate =alpha_pll_round_rate (rate, prate, &l, &a, alpha_width); + + ret =regmap_read (pll->clkr.regmap,PLL_MODE (pll), &pll_mode); +if (ret) +return ret; + +regmap_write (pll->clkr.regmap,PLL_MODE (pll),0 ); + +/* Delay of 2 output clock ticks required until output is disabled */ +udelay (1 ); + +regmap_write (pll->clkr.regmap,PLL_L_VAL (pll), l); + +if (alpha_width >ALPHA_BITWIDTH ) + a <<= alpha_width -ALPHA_BITWIDTH ; + +regmap_write (pll->clkr.regmap,PLL_ALPHA_VAL (pll), a); +regmap_write (pll->clkr.regmap,PLL_ALPHA_VAL_U (pll), + a >>ALPHA_BITWIDTH ); + +regmap_write (pll->clkr.regmap,PLL_MODE (pll),PLL_BYPASSNL ); + +/* Wait five micro seconds or more */ +udelay (5 ); +regmap_update_bits (pll->clkr.regmap,PLL_MODE (pll),PLL_RESET_N , +PLL_RESET_N ); + +/* The lock time should be less than 50 micro seconds worst case */ +usleep_range (50 ,60 ); + + ret =wait_for_pll_enable_lock (pll); +if (ret) { +pr_err ("Wait for PLL enable lock failed [%s] %d\n" , +clk_hw_get_name (hw), ret); +return ret; + } + +if (pll_mode &PLL_OUTCTRL ) +regmap_update_bits (pll->clkr.regmap,PLL_MODE (pll),PLL_OUTCTRL , +PLL_OUTCTRL ); + +return 0 ; +} + +const struct clk_ops clk_alpha_pll_stromer_plus_ops = { + .prepare = clk_alpha_pll_enable, + .unprepare = clk_alpha_pll_disable, + .is_enabled = clk_alpha_pll_is_enabled, + .recalc_rate = clk_alpha_pll_recalc_rate, + .determine_rate = clk_alpha_pll_stromer_determine_rate, + .set_rate = clk_alpha_pll_stromer_plus_set_rate, +}; +EXPORT_SYMBOL_GPL (clk_alpha_pll_stromer_plus_ops);
drivers/clk/qcom/clk-alpha-pll.h +1 -0
@@ -152,6 +152,7 @@ extern const struct clk_ops clk_alpha_pll_postdiv_ops;extern const struct clk_ops clk_alpha_pll_huayra_ops;extern const struct clk_ops clk_alpha_pll_postdiv_ro_ops;extern const struct clk_ops clk_alpha_pll_stromer_ops; +extern const struct clk_ops clk_alpha_pll_stromer_plus_ops;extern const struct clk_ops clk_alpha_pll_fabia_ops;extern const struct clk_ops clk_alpha_pll_fixed_fabia_ops;
Signature · 1 line
2.7.4
PATCH v5 3/9 clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
In reply to Varadarajan NarayananThe set rate and determine rate operations are different between Stromer and Stromer Plus PLLs. Since the programming sequence is different, the PLLs dont get configured properly and random, inexplicable crash/freeze is seen. Hence, use stromer plus ops for ipq_pll_stromer_plus.
---
v4: Update commit log to include
"What goes wrong if we don't have this patch?"
v2: Add Fixes tag
--- drivers/clk/qcom/apss-ipq-pll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/clk/qcom/apss-ipq-pll.c +1 -1
@@ -68,7 +68,7 @@ static struct clk_alpha_pll ipq_pll_stromer_plus = { .fw_name = "xo", }, .num_parents = 1, - .ops = &clk_alpha_pll_stromer_ops, + .ops = &clk_alpha_pll_stromer_plus_ops, }, }, };
Signature · 1 line
2.7.4
Re: [PATCH v5 3/9] clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
Quoted 6 lines · Varadarajan Narayanan
The set rate and determine rate operations are different between Stromer and Stromer Plus PLLs. Since the programming sequence is different, the PLLs dont get configured properly and random, inexplicable crash/freeze is seen. Hence, use stromer plus ops for
ipq_pll_stromer_plus.
Quoted 6 lines
Reviewed-by Dmitry Baryshkov <[email protected]>Acked-by Stephen Boyd <[email protected]>Fixes c7ef7fbb1ccf ("clk: qcom: apss-ipq-pll: add support for IPQ5332")Signed-off-by Kathiravan T <[email protected]>Signed-off-by Varadarajan Narayanan <[email protected]>---
Konrad
PATCH v5 4/9 clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
In reply to Varadarajan NarayananThe earlier 'l' value of 0x3e is for 1.5GHz. Not all SKUs support this frequency. Hence set it to 0x2d to get 1.1GHz which is supported in all SKUs.
The frequency can still increase above this initial configuration made here when the cpufreq driver picks a different OPP.
---
v4: Update commit log to indicate that cpufreq could subsequently
change the frequency based on the selected OPP
--- drivers/clk/qcom/apss-ipq-pll.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
drivers/clk/qcom/apss-ipq-pll.c +1 -1
@@ -74,7 +74,7 @@ static struct clk_alpha_pll ipq_pll_stromer_plus = { };static const struct alpha_pll_config ipq5332_pll_config = { - .l =0x3e , + .l =0x2d , .config_ctl_val =0x4001075b , .config_ctl_hi_val =0x304 , .main_output_mask =BIT (0 ),
Signature · 1 line
2.7.4
PATCH v5 5/9 clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
In reply to Varadarajan NarayananStromer Plus PLL found on IPQ53xx doesn't support dynamic frequency scaling. To achieve the same, we need to park the APPS PLL source to GPLL0, re configure the PLL and then switch the source to APSS_PLL_EARLY.
To support this, register a clock notifier to get the PRE_RATE and POST_RATE notification. Change the APSS PLL source to GPLL0 when PRE_RATE notification is received, then configure the PLL and then change back the source to APSS_PLL_EARLY.
Additionally, not all SKUs of IPQ53xx support scaling. Hence, do the above to the SKUs that support scaling.
---
v5: clk_notifier_register -> devm_clk_notifier_register
v3: devm_kzalloc for cpu_clk_notifier instead of global static
v2: Handle ABORT_RATE_CHANGE
Use local variable for apcs_alias0_clk_src.clkr.hw Use single line comment instead of multi line style
--- drivers/clk/qcom/apss-ipq6018.c | 58 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 57 insertions(+), 1 deletion(-)
drivers/clk/qcom/apss-ipq6018.c +57 -1
@@ -9,8 +9,11 @@#include <linux/clk-provider.h> #include <linux/regmap.h> #include <linux/module.h> +#include <linux/clk.h> +#include <linux/soc/qcom/smem.h> #include <dt-bindings/clock/qcom,apss-ipq.h> +#include <dt-bindings/arm/qcom,ids.h> #include "common.h" #include "clk-regmap.h"
@@ -84,15 +87,68 @@ static const struct qcom_cc_desc apss_ipq6018_desc = { .num_clks = ARRAY_SIZE(apss_ipq6018_clks), }; +static int cpu_clk_notifier_fn (struct notifier_block *nb,unsigned long action, +void *data) +{ +struct clk_hw *hw; +u8 index; +int err; + +if (action ==PRE_RATE_CHANGE ) + index =P_GPLL0 ; +else if (action ==POST_RATE_CHANGE || action ==ABORT_RATE_CHANGE ) + index =P_APSS_PLL_EARLY ; +else +return NOTIFY_OK ; + + hw = &apcs_alias0_clk_src.clkr.hw; + err = clk_rcg2_mux_closest_ops.set_parent (hw, index); + +return notifier_from_errno (err); +} +static int apss_ipq6018_probe (struct platform_device *pdev) { +struct clk_hw *hw = &apcs_alias0_clk_src.clkr.hw; +struct notifier_block *cpu_clk_notifier;struct regmap *regmap; +u32 soc_id; +int ret; + + ret =qcom_smem_get_soc_id (&soc_id); +if (ret) +return ret; regmap =dev_get_regmap (pdev->dev.parent,NULL );if (!regmap)return -ENODEV ; -return qcom_cc_really_probe (pdev, &apss_ipq6018_desc, regmap); + ret =qcom_cc_really_probe (pdev, &apss_ipq6018_desc, regmap); +if (ret) +return ret; + +switch (soc_id) { +/* Only below variants of IPQ53xx support scaling */ +case QCOM_ID_IPQ5332 : +case QCOM_ID_IPQ5322 : +case QCOM_ID_IPQ5300 : + cpu_clk_notifier =devm_kzalloc (&pdev->dev, +sizeof (*cpu_clk_notifier), +GFP_KERNEL ); +if (!cpu_clk_notifier) +return -ENOMEM ; + + cpu_clk_notifier->notifier_call = cpu_clk_notifier_fn; + + ret =devm_clk_notifier_register (&pdev->dev, hw->clk, cpu_clk_notifier); +if (ret) +return ret; +break ; +default : +break ; + } + +return 0 ; }static struct platform_driver apss_ipq6018_driver = {
Signature · 1 line
2.7.4
Re: [PATCH v5 5/9] clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
Quoted 10 lines · Varadarajan Narayanan
Stromer Plus PLL found on IPQ53xx doesn't support dynamic frequency scaling. To achieve the same, we need to park the APPS PLL source to GPLL0, re configure the PLL and then switch the source to
APSS_PLL_EARLY.To support this, register a clock notifier to get the
PRE_RATEandPOST_RATEnotification. Change the APSS PLL source to GPLL0 whenPRE_RATEnotification is received, then configure the PLL and then change back the source toAPSS_PLL_EARLY.
Quoted 7 lines
Additionally, not all SKUs of IPQ53xx support scaling. Hence, do the above to the SKUs that support scaling.
Reviewed-by Dmitry Baryshkov <[email protected]>Signed-off-by Kathiravan T <[email protected]>Signed-off-by Varadarajan Narayanan <[email protected]>---
This looks good, however I'm not sure if registering the callback only on SoCs that are supposed to rate-change isn't overly-defensive. That said, I'm not particularly against it.
Konrad
Stephen Boyd
maintainerRe: [PATCH v5 5/9] clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
In reply to Varadarajan NarayananQuoting Varadarajan Narayanan (2023-10-19 23:19:35)
Quoted 10 lines
Stromer Plus PLL found on IPQ53xx doesn't support dynamic frequency scaling. To achieve the same, we need to park the APPS PLL source to GPLL0, re configure the PLL and then switch the source to
APSS_PLL_EARLY.To support this, register a clock notifier to get the
PRE_RATEandPOST_RATEnotification. Change the APSS PLL source to GPLL0 whenPRE_RATEnotification is received, then configure the PLL and then change back the source toAPSS_PLL_EARLY.
Quoted 6 lines
Additionally, not all SKUs of IPQ53xx support scaling. Hence, do the above to the SKUs that support scaling.
Reviewed-by Dmitry Baryshkov <[email protected]>Signed-off-by Kathiravan T <[email protected]>Signed-off-by Varadarajan Narayanan <[email protected]>
The Kconfig change (patch#1) should be squashed into here. Otherwise there isn't a call to qcom_smem_get_soc_id() in the clk driver.
Quoted 49 lines
---
v5: clk_notifier_register -> devm_clk_notifier_register v3: devm_kzalloc for cpu_clk_notifier instead of global static v2: Handle ABORT_RATE_CHANGE Use local variable for apcs_alias0_clk_src.clkr.hw Use single line comment instead of multi line style --- drivers/clk/qcom/apss-ipq6018.c | 58 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 57 insertions(+), 1 deletion(-)drivers/clk/qcom/apss-ipq6018.c +22
-0@@ -9,8 +9,11 @@#include <linux/clk-provider.h> #include <linux/regmap.h> #include <linux/module.h> +#include <linux/clk.h> +#include <linux/soc/qcom/smem.h> #include <dt-bindings/clock/qcom,apss-ipq.h> +#include <dt-bindings/arm/qcom,ids.h> #include "common.h" #include "clk-regmap.h" @@ -84,15 +87,68 @@ static const struct qcom_cc_desc apss_ipq6018_desc = { .num_clks = ARRAY_SIZE(apss_ipq6018_clks), }; +static int cpu_clk_notifier_fn (struct notifier_block *nb,unsigned long action, +void *data) +{ +struct clk_hw *hw; +u8 index; +int err; + +if (action ==PRE_RATE_CHANGE ) + index =P_GPLL0 ; +else if (action ==POST_RATE_CHANGE || action ==ABORT_RATE_CHANGE ) + index =P_APSS_PLL_EARLY ; +else +return NOTIFY_OK ; + + hw = &apcs_alias0_clk_src.clkr.hw; + err = clk_rcg2_mux_closest_ops.set_parent (hw, index); + +return notifier_from_errno (err); +}
drivers/clk/qcom/apss-ipq6018.c static const struct qcom_cc_desc apss_ipq6018_desc = { · line 118
Quoted 10 lines
drivers/clk/qcom/apss-ipq6018.c +7
-0+static int apss_ipq6018_probe (struct platform_device *pdev) { +struct clk_hw *hw = &apcs_alias0_clk_src.clkr.hw; +struct notifier_block *cpu_clk_notifier;struct regmap *regmap; +u32 soc_id; +int ret; + + ret =qcom_smem_get_soc_id (&soc_id);
You need to explain why this information can't come from the compatible string.
Quoted 23 lines
drivers/clk/qcom/apss-ipq6018.c +17
-1+if (ret) +return ret; regmap =dev_get_regmap (pdev->dev.parent,NULL );if (!regmap)return -ENODEV ; -return qcom_cc_really_probe (pdev, &apss_ipq6018_desc, regmap); + ret =qcom_cc_really_probe (pdev, &apss_ipq6018_desc, regmap); +if (ret) +return ret; + +switch (soc_id) { +/* Only below variants of IPQ53xx support scaling */ +case QCOM_ID_IPQ5332 : +case QCOM_ID_IPQ5322 : +case QCOM_ID_IPQ5300 : + cpu_clk_notifier =devm_kzalloc (&pdev->dev, +sizeof (*cpu_clk_notifier), +GFP_KERNEL ); +if (!cpu_clk_notifier) +return -ENOMEM ; +
PATCH v5 6/9 cpufreq: qti: Enable cpufreq for ipq53xx
In reply to Varadarajan NarayananIPQ53xx have different OPPs available for the CPU based on SoC variant. This can be determined through use of an eFuse register present in the silicon.
Added support for ipq53xx on nvmem driver which helps to determine OPPs at runtime based on the eFuse register which has the CPU frequency limits. opp-supported-hw dt binding can be used to indicate the available OPPs for each limit.
nvmem driver also creates the "cpufreq-dt" platform_device after passing the version matching data to the OPP framework so that the cpufreq-dt handles the actual cpufreq implementation.
---
v5: Merge IPQ53xx with existing APQ8096 case
v2: Move IPQ53xx after APQ8096SG
--- drivers/cpufreq/cpufreq-dt-platdev.c | 1 + drivers/cpufreq/qcom-cpufreq-nvmem.c | 6 ++++++ 2 files changed, 7 insertions(+)
drivers/cpufreq/cpufreq-dt-platdev.c +1 -0
@@ -180,6 +180,7 @@ static const struct of_device_id blocklist[] __initconst = { { .compatible = "ti,am62a7", }, { .compatible = "ti,am62p5", }, + { .compatible = "qcom,ipq5332", }, { .compatible = "qcom,ipq8064", }, { .compatible = "qcom,ipq8074", }, { .compatible = "qcom,apq8064", },
drivers/cpufreq/qcom-cpufreq-nvmem.c +6 -0
@@ -153,6 +153,11 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,switch (msm_id) {case QCOM_ID_MSM8996 :case QCOM_ID_APQ8096 : +case QCOM_ID_IPQ5332 : +case QCOM_ID_IPQ5322 : +case QCOM_ID_IPQ5312 : +case QCOM_ID_IPQ5302 : +case QCOM_ID_IPQ5300 : drv->versions =1 << (unsigned int )(*speedbin);break ;case QCOM_ID_MSM8996SG :
@@ -406,6 +411,7 @@ static const struct of_device_id qcom_cpufreq_match_list[] __initconst = { { .compatible = "qcom,apq8096", .data = &match_data_kryo }, { .compatible = "qcom,msm8996", .data = &match_data_kryo }, { .compatible = "qcom,qcs404", .data = &match_data_qcs404 }, + { .compatible = "qcom,ipq5332", .data = &match_data_kryo }, { .compatible = "qcom,ipq8064", .data = &match_data_krait }, { .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 }, { .compatible = "qcom,apq8064", .data = &match_data_krait },
Signature · 1 line
2.7.4
PATCH v5 7/9 arm64: dts: qcom: ipq5332: populate the opp table based on the eFuse
In reply to Varadarajan NarayananIPQ53xx have different OPPs available for the CPU based on SoC variant. This can be determined through use of an eFuse register present in the silicon.
Add support to read the eFuse and populate the OPPs based on it.
------------------------------------------------ Frequency BIT2 BIT1 opp-supported-hw 1.1GHz 1.5GHz ------------------------------------------------ 1100000000 1 1 0x7 1500000000 0 1 0x3 ------------------------------------------------
---
v4: Change opp-supported-hw from 0xf to 0x7 in commit log
and DT entry.
v2: Fix inconsistencies in comment and move it to commit log
as suggested
Remove opp-microvolt entries as no regulator is managed by Linux cpu_speed_bin -> cpu-speed-bin in node name
Remove "nvmem-cell-names" due to dtbs_check error
--- arch/arm64/boot/dts/qcom/ipq5332.dtsi | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)
arch/arm64/boot/dts/qcom/ipq5332.dtsi +16 -3
@@ -91,11 +91,19 @@ }; cpu_opp_table: opp-table-cpu { - compatible = "operating-points-v2"; + compatible = "operating-points-v2-kryo-cpu"; opp-shared; + nvmem-cells = <&cpu_speed_bin>; - opp-1488000000 { - opp-hz = /bits/ 64 <1488000000>; + opp-1100000000 { + opp-hz = /bits/ 64 <1100000000>; + opp-supported-hw = <0x7>; + clock-latency-ns = <200000>; + }; + + opp-1500000000 { + opp-hz = /bits/ 64 <1500000000>; + opp-supported-hw = <0x3>; clock-latency-ns = <200000>; }; };
@@ -163,6 +171,11 @@ reg = <0x000a4000 0x721>; #address-cells = <1>; #size-cells = <1>; + + cpu_speed_bin: cpu-speed-bin@1d { + reg = <0x1d 0x2>; + bits = <7 2>; + }; }; rng: rng@e3000 {
Signature · 1 line
2.7.4
PATCH v5 8/9 cpufreq: qti: Introduce cpufreq for ipq95xx
In reply to Varadarajan NarayananIPQ95xx SoCs have different OPPs available for the CPU based on the SoC variant. This can be determined from an eFuse register present in the silicon.
Added support for ipq95xx on nvmem driver which helps to determine OPPs at runtime based on the eFuse register which has the CPU frequency limits. opp-supported-hw dt binding can be used to indicate the available OPPs for each limit.
---
v5: Merge IPQ95xx with APQ8096 case
v2: Simplify bin selection by tweaking the order in dts
--- drivers/cpufreq/cpufreq-dt-platdev.c | 1 + drivers/cpufreq/qcom-cpufreq-nvmem.c | 6 ++++++ 2 files changed, 7 insertions(+)
drivers/cpufreq/cpufreq-dt-platdev.c +1 -0
@@ -183,6 +183,7 @@ static const struct of_device_id blocklist[] __initconst = { { .compatible = "qcom,ipq5332", }, { .compatible = "qcom,ipq8064", }, { .compatible = "qcom,ipq8074", }, + { .compatible = "qcom,ipq9574", }, { .compatible = "qcom,apq8064", }, { .compatible = "qcom,msm8974", }, { .compatible = "qcom,msm8960", },
drivers/cpufreq/qcom-cpufreq-nvmem.c +6 -0
@@ -158,6 +158,11 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev,case QCOM_ID_IPQ5312 :case QCOM_ID_IPQ5302 :case QCOM_ID_IPQ5300 : +case QCOM_ID_IPQ9514 : +case QCOM_ID_IPQ9550 : +case QCOM_ID_IPQ9554 : +case QCOM_ID_IPQ9570 : +case QCOM_ID_IPQ9574 : drv->versions =1 << (unsigned int )(*speedbin);break ;case QCOM_ID_MSM8996SG :
@@ -415,6 +420,7 @@ static const struct of_device_id qcom_cpufreq_match_list[] __initconst = { { .compatible = "qcom,ipq8064", .data = &match_data_krait }, { .compatible = "qcom,ipq8074", .data = &match_data_ipq8074 }, { .compatible = "qcom,apq8064", .data = &match_data_krait }, + { .compatible = "qcom,ipq9574", .data = &match_data_kryo }, { .compatible = "qcom,msm8974", .data = &match_data_krait }, { .compatible = "qcom,msm8960", .data = &match_data_krait }, {},
Signature · 1 line
2.7.4
PATCH v5 9/9 arm64: dts: qcom: ipq9574: populate the opp table based on the eFuse
In reply to Varadarajan NarayananIPQ95xx SoCs have different OPPs available for the CPU based on SoC variant. This can be determined from an eFuse register present in the silicon.
Add support to read the eFuse and populate the OPPs based on it.
Frequency 1.2GHz 1.8GHz 1.5GHz No opp-supported-hw
Limit
------------------------------------------------------------
936000000 1 1 1 1 0xf
1104000000 1 1 1 1 0xf
1200000000 1 1 1 1 0xf
1416000000 0 1 1 1 0x7
1488000000 0 1 1 1 0x7
1800000000 0 1 0 1 0x5
2208000000 0 0 0 1 0x1
-----------------------------------------------------------
---
v2: cpu_speed_bin -> cpu-speed-bin in node name
Move comment to commit log
--- arch/arm64/boot/dts/qcom/ipq9574.dtsi | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)
arch/arm64/boot/dts/qcom/ipq9574.dtsi +20 -1
@@ -106,42 +106,56 @@ }; cpu_opp_table: opp-table-cpu { - compatible = "operating-points-v2"; + compatible = "operating-points-v2-kryo-cpu"; opp-shared; + nvmem-cells = <&cpu_speed_bin>; opp-936000000 { opp-hz = /bits/ 64 <936000000>; opp-microvolt = <725000>; + opp-supported-hw = <0xf>; clock-latency-ns = <200000>; }; opp-1104000000 { opp-hz = /bits/ 64 <1104000000>; opp-microvolt = <787500>; + opp-supported-hw = <0xf>; + clock-latency-ns = <200000>; + }; + + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <862500>; + opp-supported-hw = <0xf>; clock-latency-ns = <200000>; }; opp-1416000000 { opp-hz = /bits/ 64 <1416000000>; opp-microvolt = <862500>; + opp-supported-hw = <0x7>; clock-latency-ns = <200000>; }; opp-1488000000 { opp-hz = /bits/ 64 <1488000000>; opp-microvolt = <925000>; + opp-supported-hw = <0x7>; clock-latency-ns = <200000>; }; opp-1800000000 { opp-hz = /bits/ 64 <1800000000>; opp-microvolt = <987500>; + opp-supported-hw = <0x5>; clock-latency-ns = <200000>; }; opp-2208000000 { opp-hz = /bits/ 64 <2208000000>; opp-microvolt = <1062500>; + opp-supported-hw = <0x1>; clock-latency-ns = <200000>; }; };
@@ -223,6 +237,11 @@ reg = <0x000a4000 0x5a1>; #address-cells = <1>; #size-cells = <1>; + + cpu_speed_bin: cpu-speed-bin@15 { + reg = <0x15 0x2>; + bits = <7 2>; + }; }; cryptobam: dma-controller@704000 {
Signature · 1 line
2.7.4
Viresh Kumar
maintainerQuoted 3 lines · Varadarajan Narayanan
Varadarajan Narayanan (9):
cpufreq: qti: Enable cpufreq for ipq53xx
cpufreq: qti: Introduce cpufreq for ipq95xx
Can I pick just these two ?
Signature · 1 line
viresh
Quoted 6 lines · Viresh Kumar
Quoted 3 lines · Varadarajan Narayanan
Varadarajan Narayanan (9):
cpufreq: qti: Enable cpufreq for ipq53xx
cpufreq: qti: Introduce cpufreq for ipq95xxCan I pick just these two ?
ipq53xx patch is dependent on the previous safe source switching patch, hence not safe to pick that.
No -> cpufreq: qti: Enable cpufreq for ipq53xx Yes -> cpufreq: qti: Introduce cpufreq for ipq95xx
Thanks
Varada
Viresh Kumar
maintainerQuoted 6 lines · Varadarajan Narayanan
Quoted 5 lines · Viresh Kumar
Quoted 3 lines · Varadarajan Narayanan
Varadarajan Narayanan (9):
cpufreq: qti: Enable cpufreq for ipq53xx
cpufreq: qti: Introduce cpufreq for ipq95xx
Quoted 7 lines
Quoted 1 line
Can I pick just these two ?
ipq53xx patch is dependent on the previous safe source switching patch, hence not safe to pick that.
No -> cpufreq: qti: Enable cpufreq for ipq53xx Yes -> cpufreq: qti: Introduce cpufreq for ipq95xx
The patches don't apply cleanly. Please resend.
Signature · 1 line
viresh
Quoted 9 lines · Viresh Kumar
Quoted 8 lines · Varadarajan Narayanan
Quoted 6 lines · Viresh Kumar
Quoted 3 lines · Varadarajan Narayanan
Varadarajan Narayanan (9):
cpufreq: qti: Enable cpufreq for ipq53xx
cpufreq: qti: Introduce cpufreq for ipq95xxCan I pick just these two ?
Quoted 7 lines
Quoted 5 lines
ipq53xx patch is dependent on the previous safe source switching patch, hence not safe to pick that.
No -> cpufreq: qti: Enable cpufreq for ipq53xx Yes -> cpufreq: qti: Introduce cpufreq for ipq95xxThe patches don't apply cleanly. Please resend.
Have posted v6 with just these two patches and rebased to latest top. Please pick that.
Thanks
Varada
Re: (subset) [PATCH v5 0/9] Enable cpufreq for IPQ5332 & IPQ9574
In reply to Varadarajan NarayananQuoted 8 lines · Varadarajan Narayanan
Depends On:
https://lore.kernel.org/lkml/[email protected]/T/This patch series aims to enable cpufreq for IPQ5332 and IPQ9574. For IPQ5332, a minor enhancement to Stromer Plus ops and a safe source switch is needed before cpu freq can be enabled.
[...]
Applied, thanks!
[1/9] clk: qcom: config IPQ_APSS_6018 should depend on QCOM_SMEM
commit: 6a15647d0adc686226045e8046369f34d6ab03ed
[2/9] clk: qcom: clk-alpha-pll: introduce stromer plus ops
commit: 84da48921a97cee3dd1391659e93ee01d122b78b
[3/9] clk: qcom: apss-ipq-pll: Use stromer plus ops for stromer plus pll
commit: 267e29198436a8cb6770213471f72502c895096a
[4/9] clk: qcom: apss-ipq-pll: Fix 'l' value for ipq5332_pll_config
commit: 5b7a4d3d2b33398330aef69e0ff5656273483587
[5/9] clk: qcom: apss-ipq6018: ipq5332: add safe source switch for a53pll
commit: 00331227f42045314b3775957f2f7809fb3ac32fBest regards,
Signature · 1 line
Bjorn Andersson <[email protected]>
Re: (subset) [PATCH v5 0/9] Enable cpufreq for IPQ5332 & IPQ9574
In reply to Varadarajan NarayananQuoted 8 lines · Varadarajan Narayanan
Depends On:
https://lore.kernel.org/lkml/[email protected]/T/This patch series aims to enable cpufreq for IPQ5332 and IPQ9574. For IPQ5332, a minor enhancement to Stromer Plus ops and a safe source switch is needed before cpu freq can be enabled.
[...]
Applied, thanks!
[7/9] arm64: dts: qcom: ipq5332: populate the opp table based on the eFuse
commit: 62073bc9f1ecc0d91fc260e7ae380cbadd33e9fc
[9/9] arm64: dts: qcom: ipq9574: populate the opp table based on the eFuse
commit: b36074357baf2794c825ea1c145de1d22b15380bBest regards,
Signature · 1 line
Bjorn Andersson <[email protected]>