linux-kernel - [PATCH v2 1/2] dt-bindings: display: imx: Describe drm binding for fsl,imx-lcdc

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Date:   Wed, 14 Dec 2022 12:59:20 +0100
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 1/2] dt-bindings: display: imx: Describe drm binding for fsl,imx-lcdc

Modify the existing (fb-like) binding to support the drm-like binding in
parallel.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
---
 .../bindings/display/imx/fsl,imx-lcdc.yaml    | 45 ++++++++++++++++++-
 1 file changed, 44 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
index 35a8fff036ca..2a8225b10890 100644
--- a/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx-lcdc.yaml
@@ -21,6 +21,9 @@ properties:
               - fsl,imx25-fb
               - fsl,imx27-fb
           - const: fsl,imx21-fb
+      - items:
+          - const: fsl,imx25-lcdc
+          - const: fsl,imx21-lcdc
 
   clocks:
     maxItems: 3
@@ -31,6 +34,9 @@ properties:
       - const: ahb
       - const: per
 
+  port:
+    $ref: /schemas/graph.yaml#/properties/port
+
   display:
     $ref: /schemas/types.yaml#/definitions/phandle
 
@@ -59,17 +65,54 @@ properties:
     description:
       LCDC Sharp Configuration Register value.
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - fsl,imx1-lcdc
+          - fsl,imx21-lcdc
+then:
+  properties:
+    display: false
+    fsl,dmacr: false
+    fsl,lpccr: false
+    fsl,lscr1: false
+
+  required:
+    - port
+
+else:
+  properties:
+    port: false
+
+  required:
+    - display
+
 required:
   - compatible
   - clocks
   - clock-names
-  - display
   - interrupts
   - reg
 
 additionalProperties: false
 
 examples:
+  - |
+    lcdc@...bc000 {
+        compatible = "fsl,imx25-lcdc", "fsl,imx21-lcdc";
+        reg = <0x53fbc000 0x4000>;
+        interrupts = <39>;
+        clocks = <&clks 103>, <&clks 66>, <&clks 49>;
+        clock-names = "ipg", "ahb", "per";
+
+        port {
+            parallel_out: endpoint {
+              remote-endpoint = <&panel_in>;
+            };
+        };
+    };
   - |
     imxfb: fb@...21000 {
         compatible = "fsl,imx21-fb";
-- 
2.38.1