Re: [PATCH V12 1/3] ARM: dts: Add pmu sysreg node to exynos5250 and exynos5420 dtsi files

[Sylwester Nawrocki <sylvester.nawrocki-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

Hi,

Just a few minor comments...

On 12/06/2013 06:47 AM, Leela Krishna Amudala wrote:
> This patch adds pmusysreg node to exynos5250 and exynos5420 dtsi files to

s/pmusysreg/PMU sysreg ? Similarly I would capitalize it in the subject
line as well.

> handle PMU register accesses in a centralized way using syscon driver
>
> Signed-off-by: Leela Krishna Amudala<l.krishna-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Reviewed-by: Tomasz Figa<t.figa-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Reviewed-by: Doug Anderson<dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> Tested-by: Doug Anderson<dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
> ---
>   Documentation/devicetree/bindings/arm/samsung/pmu.txt |   15 +++++++++++++++
>   arch/arm/boot/dts/exynos5250.dtsi                     |    5 +++++
>   arch/arm/boot/dts/exynos5420.dtsi                     |    5 +++++
>   3 files changed, 25 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/arm/samsung/pmu.txt
>
> diff --git a/Documentation/devicetree/bindings/arm/samsung/pmu.txt b/Documentation/devicetree/bindings/arm/samsung/pmu.txt
> new file mode 100644
> index 0000000..f1f1552
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/samsung/pmu.txt

I might be easy to confuse this with ARM Performance Monitoring Unit.
So perhaps we should rename this file to, e.g. power-management-unit.txt ?

> @@ -0,0 +1,15 @@
> +SAMSUNG Exynos SoC series PMU Registers

s/PMU/Power Management Unit ?

> +
> +Properties:
> + - compatible : should contain two values. First value must be one from following list:
> +		   - "samsung,exynos5250-pmu" - for Exynos5250 SoC,
> +		   - "samsung,exynos5420-pmu" - for Exynos5420 SoC.

s/./; ?

> +		second value must be always "syscon".

It might be more safe to specify it as the last value, so something along
the lines of:

	The last value should be "syscon".

> +
> + - reg : offset and length of the register set.
> +
> +Example :
> +pmu_system_controller: system-controller@10040000 {

Might be more sensible to use 'power_management_unit' for the label.

> +	compatible = "samsung,exynos5250-pmu", "syscon";
> +	reg =<0x10040000 0x5000>;
> +};
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index b98ffc3..62f9e36 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -163,6 +163,11 @@
>   		interrupts =<0 47 0>;
>   	};
>
> +	pmu_system_controller: system-controller@10040000 {

s/pmu_system_controller/power_management_unit ? So it describes the 
subsystem
better in terms used in the SoCs User Manual ?

> +		compatible = "samsung,exynos5250-pmu", "syscon";
> +		reg =<0x10040000 0x5000>;
> +	};
> +
>   	watchdog {
>   		clocks =<&clock 336>;
>   		clock-names = "watchdog";
> diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
> index b1fa334..cd47db0 100644
> --- a/arch/arm/boot/dts/exynos5420.dtsi
> +++ b/arch/arm/boot/dts/exynos5420.dtsi
> @@ -402,4 +402,9 @@
>   		clock-names = "gscl";
>   		samsung,power-domain =<&gsc_pd>;
>   	};
> +
> +	pmu_system_controller: system-controller@10040000 {

s/pmu_system_controller/power_management_unit ?

> +		compatible = "samsung,exynos5420-pmu", "syscon";
> +		reg =<0x10040000 0x5000>;
> +	};
>   };

Otherwise looks good.

Thanks,
Sylwester
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