dt-bindings: tc358767: add DT documentation

Add DT binding documentation for the Toshiba TC358767 eDP bridge.

Acked-by: Rob Herring <robh@kernel.org>

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Archit Taneja <architt@codeaurora.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.txt b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.txt
new file mode 100644
index 000000000000..e3f6aa6a214d
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/toshiba,tc358767.txt
@@ -0,0 +1,53 @@
+Toshiba TC358767 eDP bridge bindings
+
+Required properties:
+ - compatible: "toshiba,tc358767"
+ - reg: i2c address of the bridge, 0x68 or 0x0f, depending on bootstrap pins
+ - clock-names: should be "ref"
+ - clocks: OF device-tree clock specification for refclk input. The reference
+   clock rate must be 13 MHz, 19.2 MHz, 26 MHz, or 38.4 MHz.
+
+Optional properties:
+ - shutdown-gpios: OF device-tree gpio specification for SD pin
+                   (active high shutdown input)
+ - reset-gpios: OF device-tree gpio specification for RSTX pin
+                (active low system reset)
+ - ports: the ports node can contain video interface port nodes to connect
+   to a DPI/DSI source and to an eDP/DP sink according to [1][2]:
+    - port@0: DSI input port
+    - port@1: DPI input port
+    - port@2: eDP/DP output port
+
+[1]: Documentation/devicetree/bindings/graph.txt
+[2]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+        edp-bridge@68 {
+                compatible = "toshiba,tc358767";
+                reg = <0x68>;
+                shutdown-gpios = <&gpio3 23 GPIO_ACTIVE_HIGH>;
+                reset-gpios = <&gpio3 24 GPIO_ACTIVE_LOW>;
+                clock-names = "ref";
+                clocks = <&edp_refclk>;
+
+                ports {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+
+                        port@1 {
+                                reg = <1>;
+
+                                bridge_in: endpoint {
+                                        remote-endpoint = <&dpi_out>;
+                                };
+                        };
+
+                        port@2 {
+                                reg = <2>;
+
+                                bridge_out: endpoint {
+                                        remote-endpoint = <&panel_in>;
+                                };
+                        };
+                };
+        };