[PATCH v8 3/8] dt-bindings: display: Add ingenic, jz4780-dw-hdmi DT Schema

[H. Nikolaus Schaller]

From: Sam Ravnborg <sam at ravnborg.org>

Add DT bindings for the hdmi driver for the Ingenic JZ4780 SoC.
Based on .txt binding from Zubair Lutfullah Kakakhel

We also add generic ddc-i2c-bus to synopsys,dw-hdmi.yaml

Signed-off-by: Sam Ravnborg <sam at ravnborg.org>
Signed-off-by: H. Nikolaus Schaller <hns at goldelico.com>
Cc: Rob Herring <robh at kernel.org>
Cc: devicetree at vger.kernel.org
---
 .../display/bridge/ingenic,jz4780-hdmi.yaml   | 76 +++++++++++++++++++
 .../display/bridge/synopsys,dw-hdmi.yaml      |  3 +
 2 files changed, 79 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml b/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
new file mode 100644
index 0000000000000..190ca4521b1d0
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/ingenic,jz4780-hdmi.yaml
@@ -0,0 +1,76 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/bridge/ingenic,jz4780-hdmi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bindings for Ingenic JZ4780 HDMI Transmitter
+
+maintainers:
+  - H. Nikolaus Schaller <hns at goldelico.com>
+
+description: |
+  The HDMI Transmitter in the Ingenic JZ4780 is a Synopsys DesignWare HDMI 1.4
+  TX controller IP with accompanying PHY IP.
+
+allOf:
+  - $ref: bridge/synopsys,dw-hdmi.yaml#
+
+properties:
+  compatible:
+    const: ingenic,jz4780-dw-hdmi
+
+  reg-io-width:
+    const: 4
+
+  clocks:
+    maxItems: 2
+
+  hdmi-5v-supply:
+    description: Optional regulator to provide +5V at the connector
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+required:
+    - compatible
+    - clocks
+    - clock-names
+    - ports
+    - reg-io-width
+
+unevaluatedPropertes: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/jz4780-cgu.h>
+
+    hdmi: hdmi at 10180000 {
+        compatible = "ingenic,jz4780-dw-hdmi";
+        reg = <0x10180000 0x8000>;
+        reg-io-width = <4>;
+        ddc-i2c-bus = <&i2c4>;
+        interrupt-parent = <&intc>;
+        interrupts = <3>;
+        clocks = <&cgu JZ4780_CLK_AHB0>, <&cgu JZ4780_CLK_HDMI>;
+        clock-names = "iahb", "isfr";
+
+        ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+            hdmi_in: port at 0 {
+                reg = <0>;
+                dw_hdmi_in: endpoint {
+                    remote-endpoint = <&jz4780_lcd_out>;
+                };
+            };
+            hdmi_out: port at 1 {
+                reg = <1>;
+                dw_hdmi_out: endpoint {
+                    remote-endpoint = <&hdmi_con>;
+                };
+            };
+        };
+    };
+
+...
diff --git a/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
index 9be44a682e67a..9cbeabaee0968 100644
--- a/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
+++ b/Documentation/devicetree/bindings/display/bridge/synopsys,dw-hdmi.yaml
@@ -50,6 +50,9 @@ properties:
   interrupts:
     maxItems: 1
 
+  ddc-i2c-bus:
+    description: An I2C interface if the internal DDC I2C driver is not to be used
+
 additionalProperties: true
 
 ...
-- 
2.33.0