diff mbox

[v3,1/3] cpufreq: mediatek: Add support of cpufreq to MT2701/MT7623 SoC

Message ID de42e68d86dd161bb18b4ca7f27774c63c1bd55d.1499399121.git.sean.wang@mediatek.com (mailing list archive)
State New, archived
Headers show

Commit Message

Sean Wang July 7, 2017, 3:56 a.m. UTC 
From: Sean Wang <sean.wang@mediatek.com>

MT2701/MT7623 is a 32-bit ARMv7 based quad-core (4 * Cortex-A7) with
single cluster and this hardware is also compatible with the existing
driver through enabling CPU frequency feature with operating-points-v2
bindings. Also, this driver actually supports all MediaTek SoCs, the
Kconfig menu entry and file name itself should be updated with more
generic name to drop "MT8173"

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
---
 drivers/cpufreq/Kconfig.arm                         | 8 ++++----
 drivers/cpufreq/Makefile                            | 2 +-
 drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} | 2 ++
 3 files changed, 7 insertions(+), 5 deletions(-)
 rename drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} (99%)

Comments

Jean Delvare July 7, 2017, 7:30 a.m. UTC | #1 
Hi Sean,

On ven., 2017-07-07 at 11:56 +0800, sean.wang@mediatek.com wrote:
> From: Sean Wang <sean.wang@mediatek.com>
> 
> MT2701/MT7623 is a 32-bit ARMv7 based quad-core (4 * Cortex-A7) with
> single cluster and this hardware is also compatible with the existing
> driver through enabling CPU frequency feature with operating-points-v2
> bindings. Also, this driver actually supports all MediaTek SoCs, the
> Kconfig menu entry and file name itself should be updated with more
> generic name to drop "MT8173"
> 
> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> ---
>  drivers/cpufreq/Kconfig.arm                         | 8 ++++----
>  drivers/cpufreq/Makefile                            | 2 +-
>  drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} | 2 ++
>  3 files changed, 7 insertions(+), 5 deletions(-)
>  rename drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} (99%)
> 
> diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
> index 74ed7e9..79aece7 100644
> --- a/drivers/cpufreq/Kconfig.arm
> +++ b/drivers/cpufreq/Kconfig.arm
> @@ -87,14 +87,14 @@ config ARM_KIRKWOOD_CPUFREQ
>  	  This adds the CPUFreq driver for Marvell Kirkwood
>  	  SoCs.
>  
> -config ARM_MT8173_CPUFREQ
> -	tristate "Mediatek MT8173 CPUFreq support"
> +config ARM_MEDIATEK_CPUFREQ
> +	tristate "CPU Frequency scaling support for MediaTek SoCs"
>  	depends on ARCH_MEDIATEK && REGULATOR
> -	depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
> +	depends on ARM || ARM64 || COMPILE_TEST

This statement no longer serves any purpose. The whole Kconfig.arm file
depends on ARM || ARM64, so you can drop it. As a matter of fact no
other entry in this file has the dependency.

>  	depends on !CPU_THERMAL || THERMAL
>  	select PM_OPP
>  	help
> -	  This adds the CPUFreq driver support for Mediatek MT8173 SoC.
> +	  This adds the CPUFreq driver support for MediaTek SoCs.
>  
>  config ARM_OMAP2PLUS_CPUFREQ
>  	bool "TI OMAP2+"
> diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
> index b7e78f0..4956f5d 100644
> --- a/drivers/cpufreq/Makefile
> +++ b/drivers/cpufreq/Makefile
> @@ -58,7 +58,7 @@ obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ)	+= exynos5440-cpufreq.o
>  obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ)	+= highbank-cpufreq.o
>  obj-$(CONFIG_ARM_IMX6Q_CPUFREQ)		+= imx6q-cpufreq.o
>  obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ)	+= kirkwood-cpufreq.o
> -obj-$(CONFIG_ARM_MT8173_CPUFREQ)	+= mt8173-cpufreq.o
> +obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ)	+= mtk-cpufreq.o

I would have preferred mediatek-cpufreq. 3-letter abbreviations are
likely to collide and cause confusion at some point in time. However it
seems I am late to the party, I see that there are already many files
named mtk-* or *-mtk.*... So, so be it.

Also the file describing the bindings is named cpufreq-mediatek.txt,
which is inconsistent... But the situation is the same for a few other
cpufreq drivers already, so I suppose this is acceptable.

>  obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ)	+= omap-cpufreq.o
>  obj-$(CONFIG_ARM_PXA2xx_CPUFREQ)	+= pxa2xx-cpufreq.o
>  obj-$(CONFIG_PXA3xx)			+= pxa3xx-cpufreq.o
> diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mtk-cpufreq.c
> similarity index 99%
> rename from drivers/cpufreq/mt8173-cpufreq.c
> rename to drivers/cpufreq/mtk-cpufreq.c
> index fd1886f..481ec77 100644
> --- a/drivers/cpufreq/mt8173-cpufreq.c
> +++ b/drivers/cpufreq/mtk-cpufreq.c
> @@ -575,6 +575,8 @@ static struct platform_driver mt8173_cpufreq_platdrv = {
>  
>  /* List of machines supported by this driver */
>  static const struct of_device_id mt8173_cpufreq_machines[] __initconst = {
> +	{ .compatible = "mediatek,mt2701", },
> +	{ .compatible = "mediatek,mt7623", },
>  	{ .compatible = "mediatek,mt817x", },
>  	{ .compatible = "mediatek,mt8173", },
>  	{ .compatible = "mediatek,mt8176", },

Reviewed-by: Jean Delvare <jdelvare@suse.de>
Sean Wang July 8, 2017, 6:30 a.m. UTC | #2 
On Fri, 2017-07-07 at 09:30 +0200, Jean Delvare wrote:
> Hi Sean,
> 
> On ven., 2017-07-07 at 11:56 +0800, sean.wang@mediatek.com wrote:
> > From: Sean Wang <sean.wang@mediatek.com>
> > 
> > MT2701/MT7623 is a 32-bit ARMv7 based quad-core (4 * Cortex-A7) with
> > single cluster and this hardware is also compatible with the existing
> > driver through enabling CPU frequency feature with operating-points-v2
> > bindings. Also, this driver actually supports all MediaTek SoCs, the
> > Kconfig menu entry and file name itself should be updated with more
> > generic name to drop "MT8173"
> > 
> > Signed-off-by: Sean Wang <sean.wang@mediatek.com>
> > Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
> > ---
> >  drivers/cpufreq/Kconfig.arm                         | 8 ++++----
> >  drivers/cpufreq/Makefile                            | 2 +-
> >  drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} | 2 ++
> >  3 files changed, 7 insertions(+), 5 deletions(-)
> >  rename drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} (99%)
> > 
> > diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
> > index 74ed7e9..79aece7 100644
> > --- a/drivers/cpufreq/Kconfig.arm
> > +++ b/drivers/cpufreq/Kconfig.arm
> > @@ -87,14 +87,14 @@ config ARM_KIRKWOOD_CPUFREQ
> >  	  This adds the CPUFreq driver for Marvell Kirkwood
> >  	  SoCs.
> >  
> > -config ARM_MT8173_CPUFREQ
> > -	tristate "Mediatek MT8173 CPUFreq support"
> > +config ARM_MEDIATEK_CPUFREQ
> > +	tristate "CPU Frequency scaling support for MediaTek SoCs"
> >  	depends on ARCH_MEDIATEK && REGULATOR
> > -	depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
> > +	depends on ARM || ARM64 || COMPILE_TEST
> 
> This statement no longer serves any purpose. The whole Kconfig.arm file
> depends on ARM || ARM64, so you can drop it. As a matter of fact no
> other entry in this file has the dependency.
> 

Okay, the whole line seemed redundant for that's always true. 
I will drop it in the next version.

> >  	depends on !CPU_THERMAL || THERMAL
> >  	select PM_OPP
> >  	help
> > -	  This adds the CPUFreq driver support for Mediatek MT8173 SoC.
> > +	  This adds the CPUFreq driver support for MediaTek SoCs.
> >  
> >  config ARM_OMAP2PLUS_CPUFREQ
> >  	bool "TI OMAP2+"
> > diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
> > index b7e78f0..4956f5d 100644
> > --- a/drivers/cpufreq/Makefile
> > +++ b/drivers/cpufreq/Makefile
> > @@ -58,7 +58,7 @@ obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ)	+= exynos5440-cpufreq.o
> >  obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ)	+= highbank-cpufreq.o
> >  obj-$(CONFIG_ARM_IMX6Q_CPUFREQ)		+= imx6q-cpufreq.o
> >  obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ)	+= kirkwood-cpufreq.o
> > -obj-$(CONFIG_ARM_MT8173_CPUFREQ)	+= mt8173-cpufreq.o
> > +obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ)	+= mtk-cpufreq.o
> 
> I would have preferred mediatek-cpufreq. 3-letter abbreviations are
> likely to collide and cause confusion at some point in time. However it
> seems I am late to the party, I see that there are already many files
> named mtk-* or *-mtk.*... So, so be it.
> 
> Also the file describing the bindings is named cpufreq-mediatek.txt,
> which is inconsistent... But the situation is the same for a few other
> cpufreq drivers already, so I suppose this is acceptable.
> 

Agreed. I also prefer using whole name with mediatek as the 
prefix than just abbreviation used. I will update it also in the
next version.

As for the file naming for other drivers, i feel it's okay for me
changing into mediatek as file prefix, but it still depends on
maintainers or original authors if they likes this.


	Sean

> >  obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ)	+= omap-cpufreq.o
> >  obj-$(CONFIG_ARM_PXA2xx_CPUFREQ)	+= pxa2xx-cpufreq.o
> >  obj-$(CONFIG_PXA3xx)			+= pxa3xx-cpufreq.o
> > diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mtk-cpufreq.c
> > similarity index 99%
> > rename from drivers/cpufreq/mt8173-cpufreq.c
> > rename to drivers/cpufreq/mtk-cpufreq.c
> > index fd1886f..481ec77 100644
> > --- a/drivers/cpufreq/mt8173-cpufreq.c
> > +++ b/drivers/cpufreq/mtk-cpufreq.c
> > @@ -575,6 +575,8 @@ static struct platform_driver mt8173_cpufreq_platdrv = {
> >  
> >  /* List of machines supported by this driver */
> >  static const struct of_device_id mt8173_cpufreq_machines[] __initconst = {
> > +	{ .compatible = "mediatek,mt2701", },
> > +	{ .compatible = "mediatek,mt7623", },
> >  	{ .compatible = "mediatek,mt817x", },
> >  	{ .compatible = "mediatek,mt8173", },
> >  	{ .compatible = "mediatek,mt8176", },
> 
> Reviewed-by: Jean Delvare <jdelvare@suse.de>
>
Matthias Brugger July 10, 2017, 12:05 p.m. UTC | #3 
On 07/08/2017 08:30 AM, Sean Wang wrote:
> On Fri, 2017-07-07 at 09:30 +0200, Jean Delvare wrote:
>> Hi Sean,
>>
>> On ven., 2017-07-07 at 11:56 +0800, sean.wang@mediatek.com wrote:
>>> From: Sean Wang <sean.wang@mediatek.com>
>>>
>>> MT2701/MT7623 is a 32-bit ARMv7 based quad-core (4 * Cortex-A7) with
>>> single cluster and this hardware is also compatible with the existing
>>> driver through enabling CPU frequency feature with operating-points-v2
>>> bindings. Also, this driver actually supports all MediaTek SoCs, the
>>> Kconfig menu entry and file name itself should be updated with more
>>> generic name to drop "MT8173"
>>>
>>> Signed-off-by: Sean Wang <sean.wang@mediatek.com>
>>> Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
>>> ---
>>>   drivers/cpufreq/Kconfig.arm                         | 8 ++++----
>>>   drivers/cpufreq/Makefile                            | 2 +-
>>>   drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} | 2 ++
>>>   3 files changed, 7 insertions(+), 5 deletions(-)
>>>   rename drivers/cpufreq/{mt8173-cpufreq.c => mtk-cpufreq.c} (99%)
>>>
>>> diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
>>> index 74ed7e9..79aece7 100644
>>> --- a/drivers/cpufreq/Kconfig.arm
>>> +++ b/drivers/cpufreq/Kconfig.arm
>>> @@ -87,14 +87,14 @@ config ARM_KIRKWOOD_CPUFREQ
>>>   	  This adds the CPUFreq driver for Marvell Kirkwood
>>>   	  SoCs.
>>>   
>>> -config ARM_MT8173_CPUFREQ
>>> -	tristate "Mediatek MT8173 CPUFreq support"
>>> +config ARM_MEDIATEK_CPUFREQ
>>> +	tristate "CPU Frequency scaling support for MediaTek SoCs"
>>>   	depends on ARCH_MEDIATEK && REGULATOR
>>> -	depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
>>> +	depends on ARM || ARM64 || COMPILE_TEST
>>
>> This statement no longer serves any purpose. The whole Kconfig.arm file
>> depends on ARM || ARM64, so you can drop it. As a matter of fact no
>> other entry in this file has the dependency.
>>
> 
> Okay, the whole line seemed redundant for that's always true.
> I will drop it in the next version.
> 
>>>   	depends on !CPU_THERMAL || THERMAL
>>>   	select PM_OPP
>>>   	help
>>> -	  This adds the CPUFreq driver support for Mediatek MT8173 SoC.
>>> +	  This adds the CPUFreq driver support for MediaTek SoCs.
>>>   
>>>   config ARM_OMAP2PLUS_CPUFREQ
>>>   	bool "TI OMAP2+"
>>> diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
>>> index b7e78f0..4956f5d 100644
>>> --- a/drivers/cpufreq/Makefile
>>> +++ b/drivers/cpufreq/Makefile
>>> @@ -58,7 +58,7 @@ obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ)	+= exynos5440-cpufreq.o
>>>   obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ)	+= highbank-cpufreq.o
>>>   obj-$(CONFIG_ARM_IMX6Q_CPUFREQ)		+= imx6q-cpufreq.o
>>>   obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ)	+= kirkwood-cpufreq.o
>>> -obj-$(CONFIG_ARM_MT8173_CPUFREQ)	+= mt8173-cpufreq.o
>>> +obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ)	+= mtk-cpufreq.o
>>
>> I would have preferred mediatek-cpufreq. 3-letter abbreviations are
>> likely to collide and cause confusion at some point in time. However it
>> seems I am late to the party, I see that there are already many files
>> named mtk-* or *-mtk.*... So, so be it.
>>
>> Also the file describing the bindings is named cpufreq-mediatek.txt,
>> which is inconsistent... But the situation is the same for a few other
>> cpufreq drivers already, so I suppose this is acceptable.
>>
> 
> Agreed. I also prefer using whole name with mediatek as the
> prefix than just abbreviation used. I will update it also in the
> next version.
> 
> As for the file naming for other drivers, i feel it's okay for me
> changing into mediatek as file prefix, but it still depends on
> maintainers or original authors if they likes this.
> 

If you want to clean that up, be my guest. Other low-hanging fruits to 
clean up would be the config options. Right now we have MEDIATEK, MTK 
and MT65 in kconfig, which is a mess.

Regards,
Matthias

> 
> 	Sean
> 
>>>   obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ)	+= omap-cpufreq.o
>>>   obj-$(CONFIG_ARM_PXA2xx_CPUFREQ)	+= pxa2xx-cpufreq.o
>>>   obj-$(CONFIG_PXA3xx)			+= pxa3xx-cpufreq.o
>>> diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mtk-cpufreq.c
>>> similarity index 99%
>>> rename from drivers/cpufreq/mt8173-cpufreq.c
>>> rename to drivers/cpufreq/mtk-cpufreq.c
>>> index fd1886f..481ec77 100644
>>> --- a/drivers/cpufreq/mt8173-cpufreq.c
>>> +++ b/drivers/cpufreq/mtk-cpufreq.c
>>> @@ -575,6 +575,8 @@ static struct platform_driver mt8173_cpufreq_platdrv = {
>>>   
>>>   /* List of machines supported by this driver */
>>>   static const struct of_device_id mt8173_cpufreq_machines[] __initconst = {
>>> +	{ .compatible = "mediatek,mt2701", },
>>> +	{ .compatible = "mediatek,mt7623", },
>>>   	{ .compatible = "mediatek,mt817x", },
>>>   	{ .compatible = "mediatek,mt8173", },
>>>   	{ .compatible = "mediatek,mt8176", },
>>
>> Reviewed-by: Jean Delvare <jdelvare@suse.de>
>>
> 
>
diff mbox

Patch

diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index 74ed7e9..79aece7 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -87,14 +87,14 @@  config ARM_KIRKWOOD_CPUFREQ
 	  This adds the CPUFreq driver for Marvell Kirkwood
 	  SoCs.
 
-config ARM_MT8173_CPUFREQ
-	tristate "Mediatek MT8173 CPUFreq support"
+config ARM_MEDIATEK_CPUFREQ
+	tristate "CPU Frequency scaling support for MediaTek SoCs"
 	depends on ARCH_MEDIATEK && REGULATOR
-	depends on ARM64 || (ARM_CPU_TOPOLOGY && COMPILE_TEST)
+	depends on ARM || ARM64 || COMPILE_TEST
 	depends on !CPU_THERMAL || THERMAL
 	select PM_OPP
 	help
-	  This adds the CPUFreq driver support for Mediatek MT8173 SoC.
+	  This adds the CPUFreq driver support for MediaTek SoCs.
 
 config ARM_OMAP2PLUS_CPUFREQ
 	bool "TI OMAP2+"
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index b7e78f0..4956f5d 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -58,7 +58,7 @@  obj-$(CONFIG_ARM_EXYNOS5440_CPUFREQ)	+= exynos5440-cpufreq.o
 obj-$(CONFIG_ARM_HIGHBANK_CPUFREQ)	+= highbank-cpufreq.o
 obj-$(CONFIG_ARM_IMX6Q_CPUFREQ)		+= imx6q-cpufreq.o
 obj-$(CONFIG_ARM_KIRKWOOD_CPUFREQ)	+= kirkwood-cpufreq.o
-obj-$(CONFIG_ARM_MT8173_CPUFREQ)	+= mt8173-cpufreq.o
+obj-$(CONFIG_ARM_MEDIATEK_CPUFREQ)	+= mtk-cpufreq.o
 obj-$(CONFIG_ARM_OMAP2PLUS_CPUFREQ)	+= omap-cpufreq.o
 obj-$(CONFIG_ARM_PXA2xx_CPUFREQ)	+= pxa2xx-cpufreq.o
 obj-$(CONFIG_PXA3xx)			+= pxa3xx-cpufreq.o
diff --git a/drivers/cpufreq/mt8173-cpufreq.c b/drivers/cpufreq/mtk-cpufreq.c
similarity index 99%
rename from drivers/cpufreq/mt8173-cpufreq.c
rename to drivers/cpufreq/mtk-cpufreq.c
index fd1886f..481ec77 100644
--- a/drivers/cpufreq/mt8173-cpufreq.c
+++ b/drivers/cpufreq/mtk-cpufreq.c
@@ -575,6 +575,8 @@  static struct platform_driver mt8173_cpufreq_platdrv = {
 
 /* List of machines supported by this driver */
 static const struct of_device_id mt8173_cpufreq_machines[] __initconst = {
+	{ .compatible = "mediatek,mt2701", },
+	{ .compatible = "mediatek,mt7623", },
 	{ .compatible = "mediatek,mt817x", },
 	{ .compatible = "mediatek,mt8173", },
 	{ .compatible = "mediatek,mt8176", },