dt-bindings: display/msm: Document MDSS on SA8775P

Document the MDSS hardware found on the Qualcomm SA8775P platform.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Mahadevan <quic_mahap@quicinc.com>
Patchwork: https://patchwork.freedesktop.org/patch/620492/
Link: https://lore.kernel.org/r/20241019-patchv3_1-v5-1-d2fb72c9a845@quicinc.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Author: Mahadevan

Documentation/devicetree/bindings/display/msm/qcom,sa8775p-mdss.yaml

@@ -0,0 +1,241 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/msm/qcom,sa8775p-mdss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. SA87755P Display MDSS
+
+maintainers:
+  - Mahadevan <quic_mahap@quicinc.com>
+
+description:
+  SA8775P MSM Mobile Display Subsystem(MDSS), which encapsulates sub-blocks like
+  DPU display controller, DP interfaces and EDP etc.
+
+$ref: /schemas/display/msm/mdss-common.yaml#
+
+properties:
+  compatible:
+    const: qcom,sa8775p-mdss
+
+  clocks:
+    items:
+      - description: Display AHB
+      - description: Display hf AXI
+      - description: Display core
+
+  iommus:
+    maxItems: 1
+
+  interconnects:
+    maxItems: 3
+
+  interconnect-names:
+    maxItems: 3
+
+patternProperties:
+  "^display-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        const: qcom,sa8775p-dpu
+
+  "^displayport-controller@[0-9a-f]+$":
+    type: object
+    additionalProperties: true
+
+    properties:
+      compatible:
+        items:
+          - const: qcom,sa8775p-dp
+
+required:
+  - compatible
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interconnect/qcom,icc.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,sa8775p-gcc.h>
+    #include <dt-bindings/interconnect/qcom,sa8775p-rpmh.h>
+    #include <dt-bindings/power/qcom,rpmhpd.h>
+    #include <dt-bindings/power/qcom-rpmpd.h>
+
+    display-subsystem@ae00000 {
+        compatible = "qcom,sa8775p-mdss";
+        reg = <0x0ae00000 0x1000>;
+        reg-names = "mdss";
+
+        interconnects = <&mmss_noc MASTER_MDP0 &mc_virt SLAVE_EBI1>,
+                        <&mmss_noc MASTER_MDP1 &mc_virt SLAVE_EBI1>,
+                        <&gem_noc MASTER_APPSS_PROC &config_noc SLAVE_DISPLAY_CFG>;
+        interconnect-names = "mdp0-mem",
+                             "mdp1-mem",
+                             "cpu-cfg";
+
+
+        resets = <&dispcc_core_bcr>;
+        power-domains = <&dispcc_gdsc>;
+
+        clocks = <&dispcc_ahb_clk>,
+                 <&gcc GCC_DISP_HF_AXI_CLK>,
+                 <&dispcc_mdp_clk>;
+
+        interrupts = <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>;
+        interrupt-controller;
+        #interrupt-cells = <1>;
+
+        iommus = <&apps_smmu 0x1000 0x402>;
+
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        display-controller@ae01000 {
+            compatible = "qcom,sa8775p-dpu";
+            reg = <0x0ae01000 0x8f000>,
+                  <0x0aeb0000 0x2008>;
+            reg-names = "mdp", "vbif";
+
+            clocks = <&gcc GCC_DISP_HF_AXI_CLK>,
+                     <&dispcc_ahb_clk>,
+                     <&dispcc_mdp_lut_clk>,
+                     <&dispcc_mdp_clk>,
+                     <&dispcc_mdp_vsync_clk>;
+            clock-names = "nrt_bus",
+                          "iface",
+                          "lut",
+                          "core",
+                          "vsync";
+
+            assigned-clocks = <&dispcc_mdp_vsync_clk>;
+            assigned-clock-rates = <19200000>;
+
+            operating-points-v2 = <&mdss0_mdp_opp_table>;
+            power-domains = <&rpmhpd RPMHPD_MMCX>;
+
+            interrupt-parent = <&mdss0>;
+            interrupts = <0>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                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>;
+                };
+            };
+        };
+
+        displayport-controller@af54000 {
+            compatible = "qcom,sa8775p-dp";
+
+            pinctrl-0 = <&dp_hot_plug_det>;
+            pinctrl-names = "default";
+
+            reg = <0xaf54000 0x104>,
+                  <0xaf54200 0x0c0>,
+                  <0xaf55000 0x770>,
+                  <0xaf56000 0x09c>;
+
+            interrupt-parent = <&mdss0>;
+            interrupts = <12>;
+
+            clocks = <&dispcc_mdss_ahb_clk>,
+                     <&dispcc_dptx0_aux_clk>,
+                     <&dispcc_dptx0_link_clk>,
+                     <&dispcc_dptx0_link_intf_clk>,
+                     <&dispcc_dptx0_pixel0_clk>;
+            clock-names = "core_iface",
+                          "core_aux",
+                          "ctrl_link",
+                          "ctrl_link_iface",
+                          "stream_pixel";
+
+            assigned-clocks = <&dispcc_mdss_dptx0_link_clk_src>,
+                              <&dispcc_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>;
+
+            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>;
+                };
+            };
+        };
+    };
+...