[PATCH 1/2] dt-bindings: display: bridge: Add documentation for LT8912

[Adrien Grassein]

Lontium LT8912 is a DSI to HDMI bridge.

Signed-off-by: Adrien Grassein <adrien.grassein at gmail.com>
---
 .../display/bridge/lontium,lt8912.yaml        | 92 +++++++++++++++++++
 MAINTAINERS                                   |  5 +
 2 files changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/lontium,lt8912.yaml

diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.yaml b/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.yaml
new file mode 100644
index 000000000000..ed1a6ddaab2f
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/bridge/lontium,lt8912.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Lontium LT8912 MIPI to HDMI Bridge
+
+maintainers:
+  - Adrien Grassein <adrien.grassein at gmail.com>
+
+description: |
+  The LT8912 is a bridge device which convert DSI to HDMI
+
+properties:
+  compatible:
+    enum:
+      - lontium,lt8912
+
+  reg:
+    maxItems: 1
+
+  ddc-i2c-bus:
+    maxItems: 1
+    description: i2c bus used to read EDID of the connected display.
+
+  dsi-lanes:
+    maxItems: 1
+    description: dsi lanes count interconnected with lt8912.
+
+  reset-gpios:
+    maxItems: 1
+    description: GPIO connected to active high RESET pin.
+
+  ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port at 0:
+        $ref: /schemas/graph.yaml#/properties/port
+        description:
+          Primary MIPI port-1 for MIPI input
+
+    required:
+      - port at 0
+
+required:
+  - compatible
+  - ddc-i2c-bus
+  - dsi-lanes
+  - reg
+  - reset-gpios
+  - ports
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+
+    i2c4 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      hdmi-bridge at 48 {
+        compatible = "lontium,lt8912";
+        reg = <0x48>;
+        reset-gpios = <&max7323 0 GPIO_ACTIVE_LOW>;
+        dsi-lanes = <4>;
+        ddc-i2c-bus = <&ddc_i2c_bus>;
+
+        ports {
+          #address-cells = <1>;
+          #size-cells = <0>;
+
+          port at 0 {
+            reg = <0>;
+
+            hdmi_out_in: endpoint {
+              remote-endpoint = <&mipi_dsi_out>;
+            };
+          };
+        };
+      };
+    };
+
+    ddc_i2c_bus: i2c5 {
+      #address-cells = <1>;
+      #size-cells = <0>;
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 5aa18cbfb883..01e7e356bfac 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -10472,6 +10472,11 @@ S:	Maintained
 T:	git git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid.git
 F:	drivers/hid/hid-lg-g15.c
 
+LONTIUM LT8912 MIPI TO HDMI BRIDGE
+M:	Adrien Grassein <adrien.grassein at gmail.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/display/bridge/lontium,lt8912.yaml
+
 LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI)
 M:	Sathya Prakash <sathya.prakash at broadcom.com>
 M:	Sreekanth Reddy <sreekanth.reddy at broadcom.com>
-- 
2.25.1