[PATCH v8 24/24] dt-bindings: display: rockchip: dw-hdmi: fix ports description

[Sascha Hauer]

Current port description doesn't cover all possible cases. It currently
expects one single port with two endpoints.

When the HDMI connector is described in the device tree there can be two
ports, first one going to the VOP and the second one going to the connector.

Also on SoCs which only have a single VOP there will be only one
endpoint instead of two.

This patch addresses both issues. With this there can either be a single
port ("port") , or two of them ("port at 0", "port at 1") when the connector
is also in the device tree. Also the first or only port can either have
one endpoint ("endpoint") for single VOP SoCs or two ("endpoint at 0",
"endpoint at 1") for dual VOP SoCs.

Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
Reviewed-by: Rob Herring <robh at kernel.org>
---

Notes:
    Changes since v6:
    - Add Reviewed-by: Rob Herring <robh at kernel.org>
    Changes since v5:
    - new patch
    
    Changes since v7:
    - Drop unnecessary hclk
    
    Changes since v5:
    - Drop unnecessary #size-cells/#address-cells from nodes with only single endpoint

 .../display/rockchip/rockchip,dw-hdmi.yaml    | 24 +++++++------------
 1 file changed, 9 insertions(+), 15 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
index ff5cf9fe20904..1f2fd579c510e 100644
--- a/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/rockchip/rockchip,dw-hdmi.yaml
@@ -102,27 +102,21 @@ properties:
   ports:
     $ref: /schemas/graph.yaml#/properties/ports
 
-    properties:
-      port:
-        $ref: /schemas/graph.yaml#/$defs/port-base
-        unevaluatedProperties: false
+    patternProperties:
+      "^port(@0)?$":
+        $ref: /schemas/graph.yaml#/properties/port
         description: Input of the DWC HDMI TX
-
         properties:
+          endpoint:
+            description: Connection to the VOP
           endpoint at 0:
-            $ref: /schemas/graph.yaml#/properties/endpoint
             description: Connection to the VOPB
-
           endpoint at 1:
-            $ref: /schemas/graph.yaml#/properties/endpoint
             description: Connection to the VOPL
-
-        required:
-          - endpoint at 0
-          - endpoint at 1
-
-    required:
-      - port
+    properties:
+      port at 1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description: Output of the DWC HDMI TX
 
   rockchip,grf:
     $ref: /schemas/types.yaml#/definitions/phandle
-- 
2.30.2