Subject: Re: [PATCH 6/7] ARM: dts: Add bus nodes using VDD_INT for Exynos542x
 SoC
To: Chanwoo Choi <cw00.choi@samsung.com>, myungjoo.ham@samsung.com,
        kyungmin.park@samsung.com, kgene@kernel.org, s.nawrocki@samsung.com,
        tomasz.figa@gmail.com
References: <1460091646-28701-1-git-send-email-cw00.choi@samsung.com>
 <1460091646-28701-7-git-send-email-cw00.choi@samsung.com>
Cc: rjw@rjwysocki.net, robh+dt@kernel.org, pawel.moll@arm.com,
        mark.rutland@arm.com, ijc+devicetree@hellion.org.uk,
        galak@codeaurora.org, linux@arm.linux.org.uk, linux.amoon@gmail.com,
        m.reichl@fivetechno.de, tjakobi@math.uni-bielefeld.de,
        inki.dae@samsung.com, linux-kernel@vger.kernel.org,
        linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
From: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Message-id: <570CD3AF.8040206@samsung.com>
Date: Tue, 12 Apr 2016 12:53:35 +0200
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On 04/08/2016 07:00 AM, Chanwoo Choi wrote:
> This patch adds the AMBA bus nodes using VDD_INT for Exynos542x SoC.
> Exynos542x has the following AMBA buses to translate data between
> DRAM and sub-blocks.
> 
> Following list specifies the detailed correlation between sub-block and clock:
> - CLK_DOUT_ACLK400_WCORE clock for WCORE's AXI
> - CLK_DOUT_ACLK100_NOC for NoC (Network on Chip)'s AXI
> - CLK_DOUT_PCLK200_FSYS for FSYS's APB
> - CLK_DOUT_ACLK200_FSYS for FSYS's AXI
> - CLK_DOUT_ACLK200_FSYS2 for FSYS2's AXI
> - CLK_DOUT_ACLK333 for MFC's AXI
> - CLK_DOUT_ACLK266 for GEN's AXI
> - CLK_DOUT_ACLK66 for PERIC/PERIR's AXI
> - CLK_DOUT_ACLK333_G2D for G2D's AXI
> - CLK_DOUT_ACLK266_G2D for ACP's AXI
> - CLK_DOUT_ACLK300_JPEG for JPEG's AXI
> - CLK_DOUT_ACLK166 for JPEG's APB
> - CLK_DOUT_ACLK300_DISP1 for FIMD's AXI
> - CLK_DOUT_ACLK400_DISP1 for DISP1's AXI
> - CLK_DOUT_ACLK300_GSCL for GSCL Scaler's AXI
> - CLK_DOUT_ACLK400_MSCL for MSCL's AXI
> 
> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
> ---
>  arch/arm/boot/dts/exynos5420.dtsi | 371 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 371 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/exynos5420.dtsi b/arch/arm/boot/dts/exynos5420.dtsi
> index d80f3b66f017..1340024fa882 100644
> --- a/arch/arm/boot/dts/exynos5420.dtsi
> +++ b/arch/arm/boot/dts/exynos5420.dtsi
> @@ -1224,6 +1224,377 @@
>  		power-domains = <&disp_pd>;
>  		#iommu-cells = <0>;
>  	};
> +
> +	bus_wcore: bus_wcore {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK400_WCORE>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_wcore_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_noc: bus_noc {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK100_NOC>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_noc_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_fsys_apb: bus_fsys_apb {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_PCLK200_FSYS>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_fsys_apb_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_fsys: bus_fsys {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK200_FSYS>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_fsys_apb_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_fsys2: bus_fsys2 {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK200_FSYS2>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_fsys2_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_mfc: bus_mfc {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK333>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_mfc_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_gen: bus_gen {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK266>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_gen_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_peri: bus_peri {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK66>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_peri_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_g2d: bus_g2d {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK333_G2D>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_g2d_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_g2d_acp: bus_g2d_acp {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK266_G2D>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_g2d_acp_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_jpeg: bus_jpeg {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK300_JPEG>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_jpeg_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_jpeg_apb: bus_jpeg_apb {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK166>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_jpeg_apb_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_disp1_fimd: bus_disp1_fimd {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK300_DISP1>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_disp1_fimd_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_disp1: bus_disp1 {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK400_DISP1>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_disp1_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_gscl_scaler: bus_gscl_scaler {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK300_GSCL>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_gscl_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_mscl: bus_mscl {
> +		compatible = "samsung,exynos-bus";
> +		clocks = <&clock CLK_DOUT_ACLK400_MSCL>;
> +		clock-names = "bus";
> +		operating-points-v2 = <&bus_mscl_opp_table>;
> +		status = "disabled";
> +	};
> +
> +	bus_wcore_opp_table: opp_table2 {
> +		compatible = "operating-points-v2";
> +
> +		opp00 {
> +			opp-hz = /bits/ 64 <84000000>;
> +			opp-microvolt = <925000>;
> +		};
> +		opp01 {
> +			opp-hz = /bits/ 64 <111000000>;
> +			opp-microvolt = <950000>;
> +		};
> +		opp02 {
> +			opp-hz = /bits/ 64 <222000000>;
> +			opp-microvolt = <950000>;
> +		};
> +		opp03 {
> +			opp-hz = /bits/ 64 <333000000>;
> +			opp-microvolt = <950000>;
> +		};
> +		opp04 {
> +			opp-hz = /bits/ 64 <400000000>;
> +			opp-microvolt = <987500>;
> +		};
> +	};
> +
> +	bus_noc_opp_table: opp_table3 {
> +		compatible = "operating-points-v2";
> +
> +		opp00 {
> +			opp-hz = /bits/ 64 <66000000>;

67000000 so it won't be round down?

Beside that looks good. I am assuming the same apply strategy - I can
take the DTS changes the bindings got accepted.

Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>

Best regards,
Krzysztof