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Subject[PATCH v7 3/4] dt-bindings: drm/bridge: Document Cadence MHDP bridge bindings
Date
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 | 47 +++++++++++++++++++
1 file changed, 47 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt

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..df2a00163ccf
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/cdns,mhdp.txt
@@ -0,0 +1,47 @@
+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),
+- phys: see the Documentation/devicetree/bindings/phy/phy-cadence-dp.txt
+- phy-names: must be "dpphy"
+
+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>;
+ phys = <&dp_phy>;
+ phy-names = "dpphy";
+
+ 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>;
+ };
+ };
+ };
+ };
--
2.17.1
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