[PATCH v3 1/3] dt-bindings: soc: imx: fsl,imx93-media-blk-ctrl: Allow LVDS Display Bridge child node

[Liu Ying]

i.MX93 SoC mediamix blk-ctrl contains one LDB_CTRL register and one LVDS
register which control video output through a LVDS interface.  Allow the
LVDS Display Bridge(LDB) child node and add the child node to example.

i.MX93 LDB child node(bridge at 20) is an addressable node, while i.MX93
Parallel Display Format Configuration(PDFC) child node(dpi-bridge) is a
non-addressable node.  Mixing the addressable and non-addressable child
nodes is allowed according to discussion [1].

Link: https://lore.kernel.org/all/n6akxiayi3g6gxcqhreb4iaohmeokoalnqup6h5r2fwdt4zijt@u2wyps55ayqm/ [1]
Signed-off-by: Liu Ying <victor.liu at nxp.com>
---
 .../bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml | 39 ++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
index d828c2e82965..124f5c206ee3 100644
--- a/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
+++ b/Documentation/devicetree/bindings/soc/imx/fsl,imx93-media-blk-ctrl.yaml
@@ -26,6 +26,12 @@ properties:
   reg:
     maxItems: 1
 
+  '#address-cells':
+    const: 1
+
+  '#size-cells':
+    const: 1
+
   '#power-domain-cells':
     const: 1
 
@@ -92,6 +98,11 @@ properties:
       - compatible
       - ports
 
+  bridge at 20:
+    type: object
+    $ref: /schemas/display/bridge/fsl,ldb.yaml#
+    unevaluatedProperties: false
+
 allOf:
   - if:
       properties:
@@ -112,6 +123,7 @@ allOf:
             - const: lcdif
             - const: isi
             - const: csi
+        bridge at 20: false
   - if:
       properties:
         compatible:
@@ -163,6 +175,8 @@ examples:
                <&clk IMX93_CLK_MIPI_DSI_GATE>;
                clock-names = "apb", "axi", "nic", "disp", "cam",
                              "pxp", "lcdif", "isi", "csi", "dsi";
+      #address-cells = <1>;
+      #size-cells = <1>;
       #power-domain-cells = <1>;
 
       dpi-bridge {
@@ -190,4 +204,29 @@ examples:
           };
         };
       };
+
+      bridge at 20 {
+        compatible = "fsl,imx93-ldb";
+        reg = <0x20 0x4>, <0x24 0x4>;
+        reg-names = "ldb", "lvds";
+        clocks = <&clk IMX93_CLK_LVDS_GATE>;
+        clock-names = "ldb";
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port at 0 {
+            reg = <0>;
+
+            endpoint {
+              remote-endpoint = <&lcdif_to_ldb>;
+            };
+          };
+
+          port at 1 {
+            reg = <1>;
+          };
+        };
+      };
     };

-- 
2.43.0