dt-bindings: display/msm: split qcom, mdss bindings

Split Mobile Display SubSystem (MDSS) root node bindings to the separate
yaml file. Changes to the existing (txt) schema:
 - Added optional "vbif_nrt_phys" region used by msm8996
 - Made "bus" and "vsync" clocks optional (they are not used by some
   platforms)
 - Added optional resets property referencing MDSS reset
 - Defined child nodes pointing to corresponding reference schema.
 - Dropped the "lut" clock. It was added to the schema by mistake (it is
   a part of mdp4 schema, not the mdss).

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Patchwork: https://patchwork.freedesktop.org/patch/508378/
Link: https://lore.kernel.org/r/20221024164225.3236654-2-dmitry.baryshkov@linaro.org
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Documentation/devicetree/bindings/display/msm/mdp5.txt

@@ -2,37 +2,9 @@ Qualcomm adreno/snapdragon MDP5 display controller
 
 Description:
 
-This is the bindings documentation for the Mobile Display Subsytem(MDSS) that
+This is the bindings documentation for the MDP5 display
-encapsulates sub-blocks like MDP5, DSI, HDMI, eDP etc, and the MDP5 display
 controller found in SoCs like MSM8974, APQ8084, MSM8916, MSM8994 and MSM8996.
 
-MDSS:
-Required properties:
-- compatible:
-  * "qcom,mdss" - MDSS
-- reg: Physical base address and length of the controller's registers.
-- reg-names: The names of register regions. The following regions are required:
-  * "mdss_phys"
-  * "vbif_phys"
-- interrupts: The interrupt signal from MDSS.
-- interrupt-controller: identifies the node as an interrupt controller.
-- #interrupt-cells: specifies the number of cells needed to encode an interrupt
-  source, should be 1.
-- power-domains: a power domain consumer specifier according to
-  Documentation/devicetree/bindings/power/power_domain.txt
-- clocks: device clocks. See ../clocks/clock-bindings.txt for details.
-- clock-names: the following clocks are required.
-  * "iface"
-  * "bus"
-  * "vsync"
-- #address-cells: number of address cells for the MDSS children. Should be 1.
-- #size-cells: Should be 1.
-- ranges: parent bus address space is the same as the child bus address space.
-
-Optional properties:
-- clock-names: the following clocks are optional:
-  * "lut"
-
 MDP5:
 Required properties:
 - compatible:

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

@@ -0,0 +1,196 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/msm/qcom,mdss.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Mobile Display SubSystem (MDSS)
+
+maintainers:
+  - Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
+  - Rob Clark <robdclark@gmail.com>
+
+description:
+  This is the bindings documentation for the Mobile Display Subsytem(MDSS) that
+  encapsulates sub-blocks like MDP5, DSI, HDMI, eDP, etc.
+
+properties:
+  compatible:
+    enum:
+      - qcom,mdss
+
+  reg:
+    minItems: 2
+    maxItems: 3
+
+  reg-names:
+    minItems: 2
+    items:
+      - const: mdss_phys
+      - const: vbif_phys
+      - const: vbif_nrt_phys
+
+  interrupts:
+    maxItems: 1
+
+  interrupt-controller: true
+
+  "#interrupt-cells":
+    const: 1
+
+  power-domains:
+    maxItems: 1
+    description: |
+      The MDSS power domain provided by GCC
+
+  clocks:
+    minItems: 1
+    items:
+      - description: Display abh clock
+      - description: Display axi clock
+      - description: Display vsync clock
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: iface
+      - const: bus
+      - const: vsync
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 1
+
+  ranges: true
+
+  resets:
+    items:
+      - description: MDSS_CORE reset
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - interrupts
+  - interrupt-controller
+  - "#interrupt-cells"
+  - power-domains
+  - clocks
+  - clock-names
+  - "#address-cells"
+  - "#size-cells"
+  - ranges
+
+patternProperties:
+  "^mdp@[1-9a-f][0-9a-f]*$":
+    type: object
+    properties:
+      compatible:
+        const: qcom,mdp5
+
+  "^dsi@[1-9a-f][0-9a-f]*$":
+    type: object
+    properties:
+      compatible:
+        const: qcom,mdss-dsi-ctrl
+
+  "^phy@[1-9a-f][0-9a-f]*$":
+    type: object
+    properties:
+      compatible:
+        enum:
+          - qcom,dsi-phy-14nm
+          - qcom,dsi-phy-14nm-660
+          - qcom,dsi-phy-14nm-8953
+          - qcom,dsi-phy-20nm
+          - qcom,dsi-phy-28nm-hpm
+          - qcom,dsi-phy-28nm-lp
+
+  "^hdmi-phy@[1-9a-f][0-9a-f]*$":
+    type: object
+    properties:
+      compatible:
+        enum:
+          - qcom,hdmi-phy-8084
+          - qcom,hdmi-phy-8660
+          - qcom,hdmi-phy-8960
+          - qcom,hdmi-phy-8974
+          - qcom,hdmi-phy-8996
+
+  "^hdmi-tx@[1-9a-f][0-9a-f]*$":
+    type: object
+    properties:
+      compatible:
+        enum:
+          - qcom,hdmi-tx-8084
+          - qcom,hdmi-tx-8660
+          - qcom,hdmi-tx-8960
+          - qcom,hdmi-tx-8974
+          - qcom,hdmi-tx-8994
+          - qcom,hdmi-tx-8996
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-msm8916.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    mdss@1a00000 {
+        compatible = "qcom,mdss";
+        reg = <0x1a00000 0x1000>,
+              <0x1ac8000 0x3000>;
+        reg-names = "mdss_phys", "vbif_phys";
+
+        power-domains = <&gcc MDSS_GDSC>;
+
+        clocks = <&gcc GCC_MDSS_AHB_CLK>,
+                 <&gcc GCC_MDSS_AXI_CLK>,
+                 <&gcc GCC_MDSS_VSYNC_CLK>;
+        clock-names = "iface",
+                      "bus",
+                      "vsync";
+
+        interrupts = <GIC_SPI 72 IRQ_TYPE_LEVEL_HIGH>;
+
+        interrupt-controller;
+        #interrupt-cells = <1>;
+
+        #address-cells = <1>;
+        #size-cells = <1>;
+        ranges;
+
+        mdp@1a01000 {
+            compatible = "qcom,mdp5";
+            reg = <0x01a01000 0x89000>;
+            reg-names = "mdp_phys";
+
+            interrupt-parent = <&mdss>;
+            interrupts = <0>;
+
+            clocks = <&gcc GCC_MDSS_AHB_CLK>,
+                     <&gcc GCC_MDSS_AXI_CLK>,
+                     <&gcc GCC_MDSS_MDP_CLK>,
+                     <&gcc GCC_MDSS_VSYNC_CLK>;
+            clock-names = "iface",
+                      "bus",
+                      "core",
+                      "vsync";
+
+            iommus = <&apps_iommu 4>;
+
+            ports {
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                port@0 {
+                    reg = <0>;
+                    mdp5_intf1_out: endpoint {
+                        remote-endpoint = <&dsi0_in>;
+                    };
+                };
+            };
+        };
+    };
+...