From 01048738d6b618fc1dba564b38b3df06b0937eb0 Mon Sep 17 00:00:00 2001
From: Joseph Guo <qijian.guo@nxp.com>
Date: Wed, 6 Aug 2025 10:33:32 +0900
Subject: [PATCH] dt-bindings: display: bridge: Add waveshare DSI2DPI unit
 support

Add dt-binding documentation for waveshare DSI2DPI unit

Signed-off-by: Joseph Guo <qijian.guo@nxp.com>
Suggested-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Acked-by: Liu Ying <victor.liu@nxp.com>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20250806-waveshare-v3-1-fd28e01f064f@nxp.com
---
 .../display/bridge/waveshare,dsi2dpi.yaml     | 103 ++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/waveshare,dsi2dpi.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/waveshare,dsi2dpi.yaml b/Documentation/devicetree/bindings/display/bridge/waveshare,dsi2dpi.yaml
new file mode 100644
index 000000000000..5e8498c8303d
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/waveshare,dsi2dpi.yaml
@@ -0,0 +1,103 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/waveshare,dsi2dpi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Waveshare MIPI-DSI to DPI Converter bridge
+
+maintainers:
+  - Joseph Guo <qijian.guo@nxp.com>
+
+description:
+  Waveshare bridge board is part of Waveshare panel which converts DSI to DPI.
+
+properties:
+  compatible:
+    const: waveshare,dsi2dpi
+
+  reg:
+    maxItems: 1
+    description: base I2C address of the device
+
+  power-supply: true
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port@0:
+        $ref: /schemas/graph.yaml#/$defs/port-base
+        unevaluatedProperties: false
+        description:
+          Video port for MIPI DSI input
+
+        properties:
+          endpoint:
+            $ref: /schemas/media/video-interfaces.yaml#
+            unevaluatedProperties: false
+
+            properties:
+              data-lanes:
+                description: array of physical DSI data lane indexes.
+                items:
+                  - const: 1
+                  - const: 2
+
+            required:
+              - data-lanes
+
+      port@1:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Video port for MIPI DPI output panel.
+
+    required:
+      - port@0
+      - port@1
+
+required:
+  - compatible
+  - reg
+  - ports
+  - power-supply
+
+additionalProperties: false
+
+examples:
+  - |
+
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      bridge@45 {
+        compatible = "waveshare,dsi2dpi";
+        reg = <0x45>;
+        power-supply = <&reg_3p3v>;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port@0 {
+            reg = <0>;
+
+            waveshare_from_dsim: endpoint {
+              data-lanes = <1 2>;
+              remote-endpoint = <&dsim_to_waveshare>;
+            };
+          };
+
+          port@1 {
+            reg = <1>;
+
+            waveshare_to_panel: endpoint {
+              remote-endpoint = <&panel_to_waveshare>;
+            };
+          };
+        };
+      };
+    };
+
+...
-- 
2.51.0