Hi Thomas,

Please see my comments inline.

On 14.07.2014 15:38, Thomas Abraham wrote:
> From: Thomas Abraham <[email protected]>
> 
> For Exynos 4210/5250/5420 based platforms, add CPU nodes, operating points and
> cpu clock data for migrating from Exynos specific cpufreq driver to using
> generic cpufreq drivers.

[snip]

> diff --git a/arch/arm/boot/dts/exynos4210.dtsi 
> b/arch/arm/boot/dts/exynos4210.dtsi
> index ee3001f..c3a73bf 100644
> --- a/arch/arm/boot/dts/exynos4210.dtsi
> +++ b/arch/arm/boot/dts/exynos4210.dtsi
> @@ -31,6 +31,33 @@
>               pinctrl2 = &pinctrl_2;
>       };
>  
> +     cpus {
> +             #address-cells = <1>;
> +             #size-cells = <0>;
> +             cpu@0 {

nit: Missing blank line after last property.

The cluster ID field of MPIDR on Exynos4210 is 0x9 not zero, which means
that this should be cpu@900.

> +                     device_type = "cpu";
> +                     compatible = "arm,cortex-a9";
> +                     reg = <0>;

                        reg = <0x900>;

> +                     clocks = <&clock CLK_ARM_CLK>;
> +                     clock-names = "cpu";
> +
> +                     operating-points = <
> +                             1200000 1250000
> +                             1000000 1150000
> +                             800000  1075000
> +                             500000  975000
> +                             400000  975000
> +                             200000  950000
> +                     >;
> +             };
> +
> +             cpu@1 {

                cpu@901

> +                     device_type = "cpu";
> +                     compatible = "arm,cortex-a9";
> +                     reg = <1>;

                        reg = <0x901>;

> +             };

In general this wouldn't have even booted, because there were several
places where code relied on CPUs being 0, 1, 2... However I have sent
necessary fixes and they should hit linux-next in few days.

> +     };
> +
>       sysram@02020000 {
>               compatible = "mmio-sram";
>               reg = <0x02020000 0x20000>;

[snip]

> diff --git a/arch/arm/boot/dts/exynos5250.dtsi 
> b/arch/arm/boot/dts/exynos5250.dtsi
> index 834fb5a..66b0f98 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -63,6 +63,29 @@
>                       compatible = "arm,cortex-a15";
>                       reg = <0>;
>                       clock-frequency = <1700000000>;
> +
> +                     clocks = <&clock CLK_ARM_CLK>;
> +                     clock-names = "cpu";
> +
> +                     operating-points = <
> +                             1700000 1300000
> +                             1600000 1250000
> +                             1500000 1225000
> +                             1400000 1200000
> +                             1300000 1150000
> +                             1200000 1125000
> +                             1100000 1100000
> +                             1000000 1075000
> +                              900000 1050000
> +                              800000 1025000
> +                              700000 1012500
> +                              600000 1000000
> +                              500000  975000
> +                              400000  950000
> +                              300000  937500
> +                              200000  925000
> +                     >;
> +                     clock-latency = <200000>;

I don't see this property specified for Exynos4210. Have you missed it
there?

Best regards,
Tomasz
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