linux-kernel - [PATCH v7 2/6] dt-bindings: display: ti,am65x-dss: Add support for am625 dss

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Message-ID: <20230125113529.13952-3-a-bhatia1@ti.com>
Date:   Wed, 25 Jan 2023 17:05:25 +0530
From:   Aradhya Bhatia <a-bhatia1@...com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Tomi Valkeinen <tomba@...nel.org>,
        Jyri Sarha <jyri.sarha@....fi>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>
CC:     DRI Development List <dri-devel@...ts.freedesktop.org>,
        Devicetree List <devicetree@...r.kernel.org>,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Rahul T R <r-ravikumar@...com>,
        Devarsh Thakkar <devarsht@...com>,
        Jai Luthra <j-luthra@...com>,
        Jayesh Choudhary <j-choudhary@...com>,
        Aradhya Bhatia <a-bhatia1@...com>
Subject: [PATCH v7 2/6] dt-bindings: display: ti,am65x-dss: Add support for am625 dss

The DSS controller on TI's AM625 SoC is an update from that on TI's
AM65X SoC. The former has an additional OLDI TX on its first video port
(VP0) that helps output cloned video or WUXGA (1920x1200@...ps)
resolution video output over a dual-link mode to reduce the required
OLDI clock output.

Add the new controller's compatible and a port property for the 2nd OLDI
TX (OLDI TX 1).

Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Reviewed-by: Rahul T R <r-ravikumar@...com>
---
 .../bindings/display/ti/ti,am65x-dss.yaml     | 23 +++++++++++++++++--
 1 file changed, 21 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml b/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
index 5c7d2cbc4aac..55ec91f11577 100644
--- a/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
+++ b/Documentation/devicetree/bindings/display/ti/ti,am65x-dss.yaml
@@ -19,7 +19,9 @@ description: |
 
 properties:
   compatible:
-    const: ti,am65x-dss
+    enum:
+      - ti,am625-dss
+      - ti,am65x-dss
 
   reg:
     description:
@@ -80,13 +82,18 @@ properties:
       port@0:
         $ref: /schemas/graph.yaml#/properties/port
         description:
-          The DSS OLDI output port node form video port 1
+          The DSS OLDI output port node form video port 1 (OLDI TX 0).
 
       port@1:
         $ref: /schemas/graph.yaml#/properties/port
         description:
           The DSS DPI output port node from video port 2
 
+      port@2:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          The DSS OLDI output port node form video port 1 (OLDI TX 1).
+
   ti,am65x-oldi-io-ctrl:
     $ref: "/schemas/types.yaml#/definitions/phandle"
     description:
@@ -102,6 +109,18 @@ properties:
       Input memory (from main memory to dispc) bandwidth limit in
       bytes per second
 
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: ti,am65x-dss
+    then:
+      properties:
+        ports:
+          properties:
+            port@2: false
+
 required:
   - compatible
   - reg
-- 
2.39.0