Re: [PATCH 1/3] arm64: dts: qcom: sm8550: add display hardware devices

From: Konrad Dybcio
Date: Wed Jan 04 2023 - 05:24:58 EST



On 4.01.2023 10:18, Neil Armstrong wrote:
> Add devices tree nodes describing display hardware on SM8550:
> - Display Clock Controller
> - MDSS
> - MDP
> - two DSI controllers and DSI PHYs
>
> This does not provide support for DP controllers present on the SM8550.
>
> Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> ---
> arch/arm64/boot/dts/qcom/sm8550.dtsi | 295 +++++++++++++++++++++++++++++++++++
> 1 file changed, 295 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> index f1760eea3d6b..3b68bba81473 100644
> --- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
> @@ -1425,6 +1425,301 @@ opp-202000000 {
> };
> };
>
> + mdss: mdss@ae00000 {
display-subsystem@

> + compatible = "qcom,sm8550-mdss";
> + reg = <0 0x0ae00000 0 0x1000>;
We settled on 0x0 being prefered instead of decimal zero for reg,
though I think I personally asked Abel to make it '0' in 8550 a few
months ago.. Thoughts, Krzysztof, Bjorn?

> + reg-names = "mdss";
> +
> + interconnects = <&mmss_noc MASTER_MDP 0 &gem_noc SLAVE_LLCC 0>,
> + <&mc_virt MASTER_LLCC 0 &mc_virt SLAVE_EBI1 0>;
> + interconnect-names = "mdp0-mem", "mdp1-mem";
> +
> + resets = <&dispcc DISP_CC_MDSS_CORE_BCR>;
> +
> + power-domains = <&dispcc MDSS_GDSC>;
> +
> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&gcc GCC_DISP_AHB_CLK>,
> + <&gcc GCC_DISP_HF_AXI_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>;
> +
> + interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + iommus = <&apps_smmu 0x1c00 0x2>;
> +
> + #address-cells = <2>;
> + #size-cells = <2>;
> + ranges;
We recently started an endless quest to try and regulate the property
order [1], please shuffle these around:

compat
reg
reg-names
interrupt*
clocks
clock-names
resets
reset-names
power-domains
interconnects
interconnect-names

The rest (iommus #-cells, ranges) we still haven't quite agreed
on, so I guess they may stay where they are..

Please do the same for other nodes. Otherwise this looks good!

Konrad

[1] https://github.com/konradybcio-work/dt_review/blob/master/README.md
> +
> + status = "disabled";
> +
> + mdss_mdp: display-controller@ae01000 {
> + compatible = "qcom,sm8550-dpu";
> + reg = <0 0x0ae01000 0 0x8f000>,
> + <0 0x0aeb0000 0 0x2008>;
> + reg-names = "mdp", "vbif";
> +
> + clocks = <&gcc GCC_DISP_AHB_CLK>,
> + <&gcc GCC_DISP_HF_AXI_CLK>,
> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_LUT_CLK>,
> + <&dispcc DISP_CC_MDSS_MDP_CLK>,
> + <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> + clock-names = "bus",
> + "nrt_bus",
> + "iface",
> + "lut",
> + "core",
> + "vsync";
> +
> + assigned-clocks = <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
> + assigned-clock-rates = <19200000>;
> +
> + operating-points-v2 = <&mdp_opp_table>;
> + power-domains = <&rpmhpd SM8550_MMCX>;
> +
> + interrupt-parent = <&mdss>;
> + interrupts = <0>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + dpu_intf1_out: endpoint {
> + remote-endpoint = <&mdss_dsi0_in>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + dpu_intf2_out: endpoint {
> + remote-endpoint = <&mdss_dsi1_in>;
> + };
> + };
> + };
> +
> + mdp_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-200000000 {
> + opp-hz = /bits/ 64 <200000000>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + };
> +
> + opp-325000000 {
> + opp-hz = /bits/ 64 <325000000>;
> + required-opps = <&rpmhpd_opp_svs>;
> + };
> +
> + opp-375000000 {
> + opp-hz = /bits/ 64 <375000000>;
> + required-opps = <&rpmhpd_opp_svs_l1>;
> + };
> +
> + opp-514000000 {
> + opp-hz = /bits/ 64 <514000000>;
> + required-opps = <&rpmhpd_opp_nom>;
> + };
> + };
> + };
> +
> + mdss_dsi0: dsi@ae94000 {
> + compatible = "qcom,mdss-dsi-ctrl";
> + reg = <0 0x0ae94000 0 0x400>;
> + reg-names = "dsi_ctrl";
> +
> + interrupt-parent = <&mdss>;
> + interrupts = <4>;
> +
> + clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK>,
> + <&dispcc DISP_CC_MDSS_BYTE0_INTF_CLK>,
> + <&dispcc DISP_CC_MDSS_PCLK0_CLK>,
> + <&dispcc DISP_CC_MDSS_ESC0_CLK>,
> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&gcc GCC_DISP_HF_AXI_CLK>;
> + clock-names = "byte",
> + "byte_intf",
> + "pixel",
> + "core",
> + "iface",
> + "bus";
> +
> + assigned-clocks = <&dispcc DISP_CC_MDSS_BYTE0_CLK_SRC>, <&dispcc DISP_CC_MDSS_PCLK0_CLK_SRC>;
> + assigned-clock-parents = <&mdss_dsi0_phy 0>, <&mdss_dsi0_phy 1>;
> +
> + operating-points-v2 = <&mdss_dsi_opp_table>;
> + power-domains = <&rpmhpd SM8550_MMCX>;
> +
> + phys = <&mdss_dsi0_phy>;
> + phy-names = "dsi";
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + status = "disabled";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + mdss_dsi0_in: endpoint {
> + remote-endpoint = <&dpu_intf1_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + mdss_dsi0_out: endpoint {
> + };
> + };
> + };
> +
> + mdss_dsi_opp_table: opp-table {
> + compatible = "operating-points-v2";
> +
> + opp-187500000 {
> + opp-hz = /bits/ 64 <187500000>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + };
> +
> + opp-300000000 {
> + opp-hz = /bits/ 64 <300000000>;
> + required-opps = <&rpmhpd_opp_svs>;
> + };
> +
> + opp-358000000 {
> + opp-hz = /bits/ 64 <358000000>;
> + required-opps = <&rpmhpd_opp_svs_l1>;
> + };
> + };
> + };
> +
> + mdss_dsi0_phy: phy@ae95000 {
> + compatible = "qcom,dsi-phy-4nm-8550";
> + reg = <0 0x0ae95000 0 0x200>,
> + <0 0x0ae95200 0 0x280>,
> + <0 0x0ae95500 0 0x400>;
> + reg-names = "dsi_phy",
> + "dsi_phy_lane",
> + "dsi_pll";
> +
> + #clock-cells = <1>;
> + #phy-cells = <0>;
> +
> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&rpmhcc RPMH_CXO_CLK>;
> + clock-names = "iface", "ref";
> +
> + status = "disabled";
> + };
> +
> + mdss_dsi1: dsi@ae96000 {
> + compatible = "qcom,mdss-dsi-ctrl";
> + reg = <0 0x0ae96000 0 0x400>;
> + reg-names = "dsi_ctrl";
> +
> + interrupt-parent = <&mdss>;
> + interrupts = <5>;
> +
> + clocks = <&dispcc DISP_CC_MDSS_BYTE1_CLK>,
> + <&dispcc DISP_CC_MDSS_BYTE1_INTF_CLK>,
> + <&dispcc DISP_CC_MDSS_PCLK1_CLK>,
> + <&dispcc DISP_CC_MDSS_ESC1_CLK>,
> + <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&gcc GCC_DISP_HF_AXI_CLK>;
> + clock-names = "byte",
> + "byte_intf",
> + "pixel",
> + "core",
> + "iface",
> + "bus";
> +
> + assigned-clocks = <&dispcc DISP_CC_MDSS_BYTE1_CLK_SRC>, <&dispcc DISP_CC_MDSS_PCLK1_CLK_SRC>;
> + assigned-clock-parents = <&mdss_dsi1_phy 0>, <&mdss_dsi1_phy 1>;
> +
> + operating-points-v2 = <&mdss_dsi_opp_table>;
> + power-domains = <&rpmhpd SM8550_MMCX>;
> +
> + phys = <&mdss_dsi1_phy>;
> + phy-names = "dsi";
> +
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + status = "disabled";
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + port@0 {
> + reg = <0>;
> + mdss_dsi1_in: endpoint {
> + remote-endpoint = <&dpu_intf2_out>;
> + };
> + };
> +
> + port@1 {
> + reg = <1>;
> + mdss_dsi1_out: endpoint {
> + };
> + };
> + };
> + };
> +
> + mdss_dsi1_phy: phy@ae97000 {
> + compatible = "qcom,dsi-phy-4nm-8550";
> + reg = <0 0x0ae97000 0 0x200>,
> + <0 0x0ae97200 0 0x280>,
> + <0 0x0ae97500 0 0x400>;
> + reg-names = "dsi_phy",
> + "dsi_phy_lane",
> + "dsi_pll";
> +
> + #clock-cells = <1>;
> + #phy-cells = <0>;
> +
> + clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
> + <&rpmhcc RPMH_CXO_CLK>;
> + clock-names = "iface", "ref";
> +
> + status = "disabled";
> + };
> + };
> +
> + dispcc: clock-controller@af00000 {
> + compatible = "qcom,sm8550-dispcc";
> + reg = <0 0x0af00000 0 0x20000>;
> + clocks = <&rpmhcc RPMH_CXO_CLK>,
> + <&rpmhcc RPMH_CXO_CLK_A>,
> + <&gcc GCC_DISP_AHB_CLK>,
> + <&sleep_clk>,
> + <&mdss_dsi0_phy 0>,
> + <&mdss_dsi0_phy 1>,
> + <&mdss_dsi1_phy 0>,
> + <&mdss_dsi1_phy 1>,
> + <0>, /* dp0 */
> + <0>,
> + <0>, /* dp1 */
> + <0>,
> + <0>, /* dp2 */
> + <0>,
> + <0>, /* dp3 */
> + <0>;
> + power-domains = <&rpmhpd SM8550_MMCX>;
> + required-opps = <&rpmhpd_opp_low_svs>;
> + #clock-cells = <1>;
> + #reset-cells = <1>;
> + #power-domain-cells = <1>;
> + status = "disabled";
> + };
> +
> pdc: interrupt-controller@b220000 {
> compatible = "qcom,sm8550-pdc", "qcom,pdc";
> reg = <0 0x0b220000 0 0x30000>, <0 0x174000f0 0 0x64>;
>