On Mon, Apr 05, 2021 at 04:36:07PM +0530, Krishna Manikandan wrote:

MSM Mobile Display Subsytem (MDSS) encapsulates sub-blocks
like DPU display controller, DSI etc. Add YAML schema
for DPU device tree bindings.

Signed-off-by: Krishna Manikandan <redacted>

Changes in v2:
    - Changed dpu to DPU (Sam Ravnborg)
    - Fixed indentation issues (Sam Ravnborg)
    - Added empty line between different properties (Sam Ravnborg)
    - Replaced reference txt files with  their corresponding
      yaml files (Sam Ravnborg)
    - Modified the file to use "|" only when it is
      necessary (Sam Ravnborg)

Changes in v3:
    - Corrected the license used (Rob Herring)
    - Added maxItems for properties (Rob Herring)
    - Dropped generic descriptions (Rob Herring)
    - Added ranges property (Rob Herring)
    - Corrected the indendation (Rob Herring)
    - Added additionalProperties (Rob Herring)
    - Split dsi file into two, one for dsi controller
      and another one for dsi phy per target (Rob Herring)
    - Corrected description for pinctrl-names (Rob Herring)
    - Corrected the examples used in yaml file (Rob Herring)
    - Delete dsi.txt and dpu.txt (Rob Herring)

Changes in v4:
    - Move schema up by one level (Rob Herring)
    - Add patternProperties for mdp node (Rob Herring)
    - Corrected description of some properties (Rob Herring)

Changes in v5:
    - Correct the indentation (Rob Herring)
    - Remove unnecessary description from properties (Rob Herring)
    - Correct the number of interconnect entries (Rob Herring)
    - Add interconnect names for sc7180 (Rob Herring)
    - Add description for ports (Rob Herring)
    - Remove common properties (Rob Herring)
    - Add unevalutatedProperties (Rob Herring)
    - Reference existing dsi controller yaml in the common
      dsi controller file (Rob Herring)
    - Correct the description of clock names to include only the
      clocks that are required (Rob Herring)
    - Remove properties which are already covered under the common
      binding (Rob Herring)
    - Add dsi phy supply nodes which are required for sc7180 and
      sdm845 targets (Rob Herring)
    - Add type ref for syscon-sfpb (Rob Herring)

Changes in v6:
    - Fixed errors during dt_binding_check (Rob Herring)
    - Add maxItems for phys and phys-names (Rob Herring)
    - Use unevaluatedProperties wherever required (Rob Herring)
    - Removed interrupt controller from required properties for
      dsi controller (Rob Herring)
    - Add constraints for dsi-phy reg-names based on the compatible
      phy version (Rob Herring)
    - Add constraints for dsi-phy supply nodes based on the
      compatible phy version (Rob Herring)

Changes in v7:
    - Add default value for qcom,mdss-mdp-transfer-time-us (Rob Herring)
    - Modify the schema for data-lanes (Rob Herring)
    - Split the phy schema into separate schemas based on
      the phy version (Rob Herring)

Changes in v8:
    - Resolve merge conflicts with latest dsi.txt file
    - Include dp yaml change also in the same series

Changes in v9:
    - Combine target specific dsi controller yaml files
      to a single yaml file (Rob Herring)
    - Combine target specific dsi phy yaml files into a
      single yaml file (Rob Herring)
    - Use unevaluatedProperties and additionalProperties
      wherever required
    - Remove duplicate properties from common yaml files

Changes in v10:
    - Split the patch into separate patches for DPU, DSI and
      PHY (Stephen Boyd)
    - Drop unnecessary fullstop (Stephen Boyd)
    - Add newline whereever required (Stephen Boyd)
    - Add description for clock used (Stephen Boyd)
    - Modify the description for interconnect entries  (Stephen Boyd)
    - Drop assigned clock entries as it a generic property (Stephen Boyd)
    - Correct the definition for interrupts (Stephen Boyd)
    - Drop clock names from required properties (Stephen Boyd)
    - Drop labels for display nodes from example (Stephen Boyd)
    - Drop flags from interrupts entries (Stephen Boyd)

Changes in v11:
    - Drop maxItems for clocks (Stephen Boyd)

Changes in v12:
    - Add description for register property (Stephen Boyd)
    - Add maxItems for interrupts (Stephen Boyd)
    - Add description for iommus property (Stephen Boyd)
    - Add description for interconnects (Stephen Boyd)
    - Change display node name to display_controller (Stephen Boyd)

Changes in v13:
    - Add maxItems for reg property (Stephen Boyd)
    - Add ranges property in example (Stephen Boyd)
    - Modify description for iommus property (Stephen Boyd)
    - Add Dp bindings for ports in the same patch (Stephen Boyd)
    - Remove soc from examples and change address and size cells
      accordingly (Stephen Boyd)
    - Add reference for ports

Changes in v14:
    - Modify title for SC7180 and SDM845 yaml files (Stephen Boyd)
    - Add required list for display-controller node (Stephen Boyd)
    - Rename mdss node name to display-subsytem (Stephen Boyd)

I know the DRM maintainers like revision history in the commit, but I 
think it's pretty pointless in this case. It's *just* a conversion. 

s/port/ports/

+        type: object

Don't need this.

+        description: |
+          Contains the list of output ports from DPU device. These ports
+          connect to interfaces that are external to the DPU hardware,
+          such as DSI, DP etc. Each output port contains an endpoint that
+          describes how it is connected to an external interface.
+
+        properties:
+          port@0:
+            type: object

Drop 'type' and add:

$ref: /schemas/graph.yaml#/properties/port

+            description: DPU_INTF1 (DSI1)
+
+          port@1:
+            type: object

And here.

+            description: DPU_INTF2 (DSI2)

blank line

+          port@2:
+            type: object

And here.

+            description: DPU_INTF0 (DP)
+

All the port nodes are optional?

+    required:
+      - compatible
+      - reg
+      - reg-names
+      - clocks
+      - interrupts
+      - ports
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - power-domains
+  - clocks
+  - interrupts
+  - interrupt-controller
+  - iommus
+  - ranges
+
+additionalProperties: true

This should be false.

Same issues in this one...

+        $ref: /schemas/graph.yaml#/properties/port
+        type: object
+        description: |
+          Contains the list of output ports from DPU device. These ports
+          connect to interfaces that are external to the DPU hardware,
+          such as DSI, DP etc. Each output port contains an endpoint that
+          describes how it is connected to an external interface.
+
+        properties:
+          port@0:
+            type: object
+            description: DPU_INTF1 (DSI1)
+
+          port@1:
+            type: object
+            description: DPU_INTF2 (DSI2)
+
+    required:
+      - compatible
+      - reg
+      - reg-names
+      - clocks
+      - interrupts
+      - ports
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - power-domains
+  - clocks
+  - interrupts
+  - interrupt-controller
+  - iommus
+  - ranges
+
+additionalProperties: true

false

+
+examples:
+- |
+    #include <dt-bindings/clock/qcom,dispcc-sdm845.h>
+    #include <dt-bindings/clock/qcom,gcc-sdm845.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    display-subsystem@ae00000 {
+          #address-cells = <1>;
+          #size-cells = <1>;
+          compatible = "qcom,sdm845-mdss";
+          reg = <0x0ae00000 0x1000>;
+          reg-names = "mdss";
+          power-domains = <&dispcc MDSS_GDSC>;
+
+          clocks = <&gcc GCC_DISP_AHB_CLK>,
+                   <&gcc GCC_DISP_AXI_CLK>,
+                   <&dispcc DISP_CC_MDSS_MDP_CLK>;
+          clock-names = "iface", "bus", "core";
+
+          interrupts = <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>;
+          interrupt-controller;
+          #interrupt-cells = <1>;
+
+          iommus = <&apps_smmu 0x880 0x8>,
+                   <&apps_smmu 0xc80 0x8>;
+          ranges;
+
+          display-controller@ae01000 {
+                    compatible = "qcom,sdm845-dpu";
+                    reg = <0x0ae01000 0x8f000>,
+                          <0x0aeb0000 0x2008>;
+                    reg-names = "mdp", "vbif";
+
+                    clocks = <&dispcc DISP_CC_MDSS_AHB_CLK>,
+                             <&dispcc DISP_CC_MDSS_AXI_CLK>,
+                             <&dispcc DISP_CC_MDSS_MDP_CLK>,
+                             <&dispcc DISP_CC_MDSS_VSYNC_CLK>;
+                    clock-names = "iface", "bus", "core", "vsync";
+
+                    interrupt-parent = <&mdss>;
+                    interrupts = <0>;
+
+                    ports {
+                           #address-cells = <1>;
+                           #size-cells = <0>;
+
+                           port@0 {
+                                   reg = <0>;
+                                   dpu_intf1_out: endpoint {
+                                                  remote-endpoint = <&dsi0_in>;
+                                   };
+                           };
+
+                           port@1 {
+                                   reg = <1>;
+                                   dpu_intf2_out: endpoint {
+                                                  remote-endpoint = <&dsi1_in>;
+                                   };
+                           };
+                    };
+          };
+    };
+...