linux-kernel - Re: [PATCH v3 20/20] ARM: dts: Add support of bus frequency for exynos4412-trats/odroidu3

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Date:	Fri, 11 Dec 2015 16:20:50 +0900
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>, myungjoo.ham@...sung.com,
	kgene@...nel.org
Cc:	kyungmin.park@...sung.com, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, linux@....linux.org.uk,
	tjakobi@...h.uni-bielefeld.de, linux.amoon@...il.com,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 20/20] ARM: dts: Add support of bus frequency for
 exynos4412-trats/odroidu3

On 11.12.2015 14:07, Chanwoo Choi wrote:
> THis patch adds the bus device tree nodes for both MIF (Memory) and INT
> (Internal) block to enable the bus frequency.
> 
> The DMC bus is parent device in MIF block using VDD_MIF and the LEFTBUS
> bus is parent device in INT block using VDD_INT.
> 
> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
> [linux.amoon: Tested on Odroid U3]
> Tested-by: Anand Moon <linux.amoon@...il.com>
> ---
>  arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 47 ++++++++++++++++++++++++
>  arch/arm/boot/dts/exynos4412-trats2.dts         | 48 +++++++++++++++++++++++++
>  2 files changed, 95 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> index 7bd65026761e..b6818aec7cf9 100644
> --- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> +++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
> @@ -501,3 +501,50 @@
>  &watchdog {
>  	status = "okay";
>  };
> +
> +&bus_acp {
> +	devfreq = <&bus_dmc>;
> +	status = "okay";
> +};

I meant put them in proper place, respecting alphabetical order. The 'b'
comes before 'w'.

As for the new nodes (bus_XXX) your previous sorting (first parent, then
passive) was also okay - it had sense. This is up to you. Just put
everything not at the end of file.

Best regards,
Krzysztof


> +
> +&bus_c2c {
> +	devfreq = <&bus_dmc>;
> +	status = "okay";
> +};
> +
> +&bus_dmc {
> +	devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
> +	vdd-supply = <&buck1_reg>;
> +	status = "okay";
> +};
> +
> +&bus_display {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_fsys {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_leftbus {
> +	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
> +	vdd-supply = <&buck3_reg>;
> +	status = "okay";
> +};
> +
> +&bus_mfc {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_peri {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_rightbus {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
> index 92438eb6eec6..0b8aff3b8cb7 100644
> --- a/arch/arm/boot/dts/exynos4412-trats2.dts
> +++ b/arch/arm/boot/dts/exynos4412-trats2.dts
> @@ -1251,3 +1251,51 @@
>  	vtmu-supply = <&ldo10_reg>;
>  	status = "okay";
>  };
> +
> +&bus_acp {
> +	devfreq = <&bus_dmc>;
> +	status = "okay";
> +};
> +
> +&bus_c2c {
> +	devfreq = <&bus_dmc>;
> +	status = "okay";
> +};
> +
> +&bus_dmc {
> +	devfreq-events = <&ppmu_dmc0_3>, <&ppmu_dmc1_3>;
> +	vdd-supply = <&buck1_reg>;
> +	status = "okay";
> +};
> +
> +&bus_display {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +
> +&bus_fsys {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_leftbus {
> +	devfreq-events = <&ppmu_leftbus_3>, <&ppmu_rightbus_3>;
> +	vdd-supply = <&buck3_reg>;
> +	status = "okay";
> +};
> +
> +&bus_mfc {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_peri {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> +
> +&bus_rightbus {
> +	devfreq = <&bus_leftbus>;
> +	status = "okay";
> +};
> 

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