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Message-ID: <7sj55umpspghithnuczpmqn7ex2shui2seqx23buwrkiu3736n@hoitmsdkhv2f>
Date: Thu, 12 Sep 2024 10:50:38 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To: Mahadevan <quic_mahap@...cinc.com>
Cc: robdclark@...il.com, quic_abhinavk@...cinc.com, sean@...rly.run,
marijn.suijten@...ainline.org, airlied@...il.com, daniel@...ll.ch,
maarten.lankhorst@...ux.intel.com, mripard@...nel.org, tzimmermann@...e.de, robh@...nel.org,
krzk+dt@...nel.org, conor+dt@...nel.org, swboyd@...omium.org,
konrad.dybcio@...aro.org, danila@...xyga.com, bigfoot@...ssfun.cn,
neil.armstrong@...aro.org, mailingradian@...il.com, quic_jesszhan@...cinc.com,
andersson@...nel.org, linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
quic_kalyant@...cinc.com, quic_jmadiset@...cinc.com, quic_vpolimer@...cinc.com
Subject: Re: [PATCH 1/5] dt-bindings: display/msm: Document MDSS on SA8775P
On Thu, Sep 12, 2024 at 12:44:33PM GMT, Mahadevan wrote:
> Document the MDSS hardware found on the Qualcomm SA8775P platform.
>
> Signed-off-by: Mahadevan <quic_mahap@...cinc.com>
I don't think this was tested before submission. I observe obvious
issues which should have been reported while testing dt bindings.
I will not point those, letting you discover, identify and fix them.
Nevertheless,
> +examples:
> + - |
> + #include <dt-bindings/clock/qcom,sa8775p-dispcc.h>
> + #include <dt-bindings/clock/qcom,gcc-sa8775p.h>
> + #include <dt-bindings/clock/qcom,rpmh.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interconnect/qcom,sa8775p.h>
> + #include <dt-bindings/power/qcom,rpmhpd.h>
> +
> + mdss0: display-subsystem@...0000 {
Drop unused label
> + compatible = "qcom,sa8775p-mdss";
> + reg = <0 0x0ae00000 0 0x1000>;
> + reg-names = "mdss";
> +
> + /* same path used twice */
> + interconnects = <&mmss_noc MASTER_MDP0 0 &mc_virt SLAVE_EBI1 0>,
> + <&mmss_noc MASTER_MDP1 0 &mc_virt SLAVE_EBI1 0>,
> + <&gem_noc MASTER_APPSS_PROC QCOM_ICC_TAG_ACTIVE_ONLY
> + &config_noc SLAVE_DISPLAY_CFG QCOM_ICC_TAG_ACTIVE_ONLY>;
> + interconnect-names = "mdp0-mem",
> + "mdp1-mem",
> + "cpu-cfg";
Missing reset.
> +
> + power-domains = <&dispcc0 MDSS_DISP_CC_MDSS_CORE_GDSC>;
> +
> + clocks = <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
> + <&gcc GCC_DISP_HF_AXI_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_MDP_CLK>;
> +
> + interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + iommus = <&apps_smmu 0x1000 0x402>;
> +
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
> +
> + status = "disabled";
Drop
> +
> + mdss_mdp: display-controller@...1000 {
> + compatible = "qcom,sa8775p-dpu";
> + reg = <0 0x0ae01000 0 0x8f000>,
> + <0 0x0aeb0000 0 0x2008>;
> + reg-names = "mdp", "vbif";
> +
> + clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_MDP_LUT_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_MDP_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_VSYNC_CLK>;
> + clock-names = "bus",
> + "iface",
> + "lut",
> + "core",
> + "vsync";
> +
> + assigned-clocks = <&dispcc0 MDSS_DISP_CC_MDSS_VSYNC_CLK>;
> + assigned-clock-rates = <19200000>;
empty line
> + operating-points-v2 = <&mdss0_mdp_opp_table>;
> + power-domains = <&rpmhpd RPMHPD_MMCX>;
> +
> + interrupt-parent = <&mdss0>;
> + interrupts = <0>;
empty line
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
empty line
> + port@0 {
> + reg = <0>;
> + dpu_intf0_out: endpoint {
> + remote-endpoint = <&mdss0_dp0_in>;
> + };
> + };
> + };
> +
> + mdss0_mdp_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-375000000 {
> + opp-hz = /bits/ 64 <375000000>;
> + required-opps = <&rpmhpd_opp_svs_l1>;
> + };
> +
> + opp-500000000 {
> + opp-hz = /bits/ 64 <500000000>;
> + required-opps = <&rpmhpd_opp_nom>;
> + };
> +
> + opp-575000000 {
> + opp-hz = /bits/ 64 <575000000>;
> + required-opps = <&rpmhpd_opp_turbo>;
> + };
> +
> + opp-650000000 {
> + opp-hz = /bits/ 64 <650000000>;
> + required-opps = <&rpmhpd_opp_turbo_l1>;
> + };
> + };
> + };
> +
> + mdss0_dp0: displayport-controller@...4000 {
Drop unused label
> + compatible = "qcom,sa8775p-dp";
> +
> + pinctrl-0 = <&dp_hot_plug_det>;
> + pinctrl-names = "default";
> +
> + reg = <0 0xaf54000 0 0x104>,
> + <0 0xaf54200 0 0x0c0>,
> + <0 0xaf55000 0 0x770>,
> + <0 0xaf56000 0 0x09c>;
Wrong identation (here and afterwards).
Missing p1 block
> +
> + interrupt-parent = <&mdss0>;
> + interrupts = <12>;
> + clocks = <&dispcc0 MDSS_DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_AUX_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_INTF_CLK>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_PIXEL0_CLK>;
> + clock-names = "core_iface",
> + "core_aux",
> + "ctrl_link",
> + "ctrl_link_iface",
> + "stream_pixel";
> + assigned-clocks = <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_LINK_CLK_SRC>,
> + <&dispcc0 MDSS_DISP_CC_MDSS_DPTX0_PIXEL0_CLK_SRC>;
> + assigned-clock-parents = <&mdss0_edp_phy 0>, <&mdss0_edp_phy 1>;
> + phys = <&mdss0_edp_phy>;
> + phy-names = "dp";
> + operating-points-v2 = <&dp_opp_table>;
> + power-domains = <&rpmhpd SA8775P_MMCX>;
> + #sound-dai-cells = <0>;
> + status = "disabled";
Drop
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port@0 {
> + reg = <0>;
> + mdss0_dp0_in: endpoint {
> + remote-endpoint = <&dpu_intf0_out>;
> + };
> + };
> + port@1 {
> + reg = <1>;
> + mdss0_dp_out: endpoint { };
> + };
> + };
> + dp_opp_table: opp-table {
> + compatible = "operating-points-v2";
> + opp-160000000 {
> + opp-hz = /bits/ 64 <160000000>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + };
> + opp-270000000 {
> + opp-hz = /bits/ 64 <270000000>;
> + required-opps = <&rpmhpd_opp_svs>;
> + };
> +
> + opp-540000000 {
> + opp-hz = /bits/ 64 <540000000>;
> + required-opps = <&rpmhpd_opp_svs_l1>;
> + };
> + opp-810000000 {
> + opp-hz = /bits/ 64 <810000000>;
> + required-opps = <&rpmhpd_opp_nom>;
> + };
> + };
> +
> + };
> +...
> --
> 2.34.1
>
--
With best wishes
Dmitry
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