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Date: Tue, 12 Apr 2016 12:53:35 +0200
From: Krzysztof Kozlowski <k.kozlowski@...sung.com>
To: Chanwoo Choi <cw00.choi@...sung.com>, myungjoo.ham@...sung.com,
kyungmin.park@...sung.com, kgene@...nel.org,
s.nawrocki@...sung.com, tomasz.figa@...il.com
Cc: rjw@...ysocki.net, robh+dt@...nel.org, pawel.moll@....com,
mark.rutland@....com, ijc+devicetree@...lion.org.uk,
galak@...eaurora.org, linux@....linux.org.uk,
linux.amoon@...il.com, m.reichl@...etechno.de,
tjakobi@...h.uni-bielefeld.de, inki.dae@...sung.com,
linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
linux-samsung-soc@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 6/7] ARM: dts: Add bus nodes using VDD_INT for Exynos542x
SoC
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@...sung.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@...sung.com>
Best regards,
Krzysztof
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