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Date: Thu, 16 Jul 2015 10:34:54 +0900
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
Thomas Abraham <thomas.ab@...sung.com>,
Sylwester Nawrocki <s.nawrocki@...sung.com>,
Michael Turquette <mturquette@...libre.com>,
Kukjin Kim <kgene.kim@...sung.com>,
Kukjin Kim <kgene@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>
Cc: Tomasz Figa <tomasz.figa@...il.com>,
Lukasz Majewski <l.majewski@...sung.com>,
Heiko Stuebner <heiko@...ech.de>,
Chanwoo Choi <cw00.choi@...sung.com>,
Kevin Hilman <khilman@...aro.org>,
Javier Martinez Canillas <javier@...hile0.org>,
linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
linux-pm@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org,
Doug Anderson <dianders@...omium.org>,
Andreas Faerber <afaerber@...e.de>
Subject: Re: [PATCH v3 2/4] ARM: dts: Exynos5250: add CPU OPP and regulator
supply property
On 01.07.2015 22:10, Bartlomiej Zolnierkiewicz wrote:
> From: Thomas Abraham <thomas.ab@...sung.com>
>
> For Exynos5250 platforms, add CPU operating points and CPU
> regulator supply properties for migrating from Exynos specific
> cpufreq driver to using generic cpufreq driver.
>
> Changes by Bartlomiej:
> - split Exynos5250 support from the original patch
> - added CPU regulator supply property for Google Spring board
> - put the new cpu nodes in alphabetical order
>
> Cc: Kukjin Kim <kgene.kim@...sung.com>
> Cc: Doug Anderson <dianders@...omium.org>
> Cc: Javier Martinez Canillas <javier@...hile0.org>
> Cc: Andreas Faerber <afaerber@...e.de>
> Signed-off-by: Thomas Abraham <thomas.ab@...sung.com>
> Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
> ---
> arch/arm/boot/dts/exynos5250-arndale.dts | 4 ++++
> arch/arm/boot/dts/exynos5250-smdk5250.dts | 4 ++++
> arch/arm/boot/dts/exynos5250-snow.dts | 4 ++++
> arch/arm/boot/dts/exynos5250-spring.dts | 4 ++++
> arch/arm/boot/dts/exynos5250.dtsi | 22 ++++++++++++++++++++++
> 5 files changed, 38 insertions(+)
>
> diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
> index 7e728a1..db3f65f 100644
> --- a/arch/arm/boot/dts/exynos5250-arndale.dts
> +++ b/arch/arm/boot/dts/exynos5250-arndale.dts
> @@ -117,6 +117,10 @@
> };
> };
>
> +&cpu0 {
> + cpu0-supply = <&buck2_reg>;
> +};
> +
> &dp {
> status = "okay";
> samsung,color-space = <0>;
> diff --git a/arch/arm/boot/dts/exynos5250-smdk5250.dts b/arch/arm/boot/dts/exynos5250-smdk5250.dts
> index 4fe186d..15aea76 100644
> --- a/arch/arm/boot/dts/exynos5250-smdk5250.dts
> +++ b/arch/arm/boot/dts/exynos5250-smdk5250.dts
> @@ -74,6 +74,10 @@
> };
> };
>
> +&cpu0 {
> + cpu0-supply = <&buck2_reg>;
> +};
> +
> &dp {
> samsung,color-space = <0>;
> samsung,dynamic-range = <0>;
> diff --git a/arch/arm/boot/dts/exynos5250-snow.dts b/arch/arm/boot/dts/exynos5250-snow.dts
> index b7f4122..a4133df 100644
> --- a/arch/arm/boot/dts/exynos5250-snow.dts
> +++ b/arch/arm/boot/dts/exynos5250-snow.dts
> @@ -235,6 +235,10 @@
> };
> };
>
> +&cpu0 {
> + cpu0-supply = <&buck2_reg>;
> +};
> +
> &dp {
> status = "okay";
> pinctrl-names = "default";
> diff --git a/arch/arm/boot/dts/exynos5250-spring.dts b/arch/arm/boot/dts/exynos5250-spring.dts
> index d03f9b8..c1edd6d 100644
> --- a/arch/arm/boot/dts/exynos5250-spring.dts
> +++ b/arch/arm/boot/dts/exynos5250-spring.dts
> @@ -65,6 +65,10 @@
> };
> };
>
> +&cpu0 {
> + cpu0-supply = <&buck2_reg>;
> +};
> +
> &dp {
> status = "okay";
> pinctrl-names = "default";
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
> index bf9bee6..0c7ef12 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -63,6 +63,28 @@
> compatible = "arm,cortex-a15";
> reg = <0>;
> clock-frequency = <1700000000>;
> + clocks = <&clock CLK_ARM_CLK>;
> + clock-names = "cpu";
> + clock-latency = <140000>;
> +
> + 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
> + >;
> cooling-min-level = <15>;
> cooling-max-level = <9>;
> #cooling-cells = <2>; /* min followed by max */
>
I see you have all necessary acks so this can go through samsung-soc. I
started applying everything. Patch 4/4 does not apply cleanly but this
was easy to solve (I think it is better to rebase on Linus tree not on
next in such case; subsystems cannot apply easily something depending on
next).
Unfortunately this patch (2/4) has build errors:
DTC arch/arm/boot/dts/exynos5250-arndale.dtb
Error: ../arch/arm/boot/dts/exynos5250.dtsi:65.21-22 syntax error
FATAL ERROR: Unable to parse input tree
make[2]: *** [arch/arm/boot/dts/exynos5250-arndale.dtb] Error 1
make[1]: *** [dtbs] Error 2
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory `/home/kozik/dev/linux/krzk/out'
make: *** [sub-make] Error 2
Fail: Make error
I tried to apply this patch on my dt-for-next branch:
https://github.com/krzk/linux/commits/dt-for-next
I hold back other patches until this is clarified.
Best regards,
Krzysztof
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