[v6,3/6] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings
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Message ID 1539034953-11274-4-git-send-email-dkos@cadence.com
State New
Headers show
Series
  • drm: add support for Cadence MHDP DPI/DP bridge.
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Commit Message

Damian Kos Oct. 8, 2018, 9:42 p.m. UTC
From: Quentin Schulz <quentin.schulz@free-electrons.com>

Document the bindings used for the Cadence MHDP DPI/DP bridge.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Signed-off-by: Damian Kos <dkos@cadence.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../bindings/display/bridge/cdns,mhdp.txt     | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt

Patch
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diff --git a/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
new file mode 100644
index 000000000000..f8334c520b98
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
@@ -0,0 +1,43 @@ 
+Cadence MHDP bridge
+==========================
+
+The Cadence MHDP bridge is a DPI to DP bridge.
+
+Required properties:
+- compatible: should be "cdns,mhdp8546",
+- reg: physical base address and length of the controller's registers,
+- clocks: DP bridge clock, it's used by the IP to know how to translate
+	a number of clock cycles into a time (which is used to comply
+	with DP standard timings and delays),
+
+Required subnodes:
+- ports: Ports as described in Documentation/devictree/bindings/graph.txt
+	Port 0 - input port representing the DP bridge input
+	Port 1 - output port representing the DP bridge output
+
+Example:
+
+	mhdp: dp-bridge@f0fb000000 {
+		compatible = "cdns,mhdp8546";
+		reg = <0xf0 0xfb000000 0x0 0x1000000>;
+		clocks = <&mhdp_clock>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+				dp_bridge_input: endpoint {
+					remote-endpoint = <&xxx_dpi_output>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+				dp_bridge_output: endpoint {
+					remote-endpoint = <&xxx_dp_connector_input>;
+				};
+			};
+		};
+	};