This patch adds documentation of device tree bindings for the Synopsys
HDMI 2.0 TX encoder driver for ARC SoCs.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@xxxxxxxxxxxx>
---
.../display/bridge/snps,arc-dw-hdmi.txt | 73 +++++++++++++++++++
1 file changed, 73 insertions(+)
create mode 100644 Documentation/devicetree/bindings/display/bridge/snps,arc-dw-hdmi.txt
diff --git a/Documentation/devicetree/bindings/display/bridge/snps,arc-dw-hdmi.txt b/Documentation/devicetree/bindings/display/bridge/snps,arc-dw-hdmi.txt
new file mode 100644
index 000000000000..d5e006b392cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/snps,arc-dw-hdmi.txt
@@ -0,0 +1,73 @@
+Synopsys DesignWare HDMI 2.0 TX encoder driver for ARC SoCs
+================================
+
+The HDMI transmitter is a Synopsys DesignWare HDMI 2.0 TX controller IP
+with a companion of Synopsys DesignWare HDMI 2.0 TX PHY IP.
+
+These DT bindings follow the Synopsys DWC HDMI TX bindings defined in
+Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt
+with the following device-specific properties.
+
+
+Required properties:
+
+- compatible : Shall contain
+ - "snps,dw-hdmi-hsdk" for HSDK4xD compatible HDMI TX
+
+- reg: See dw_hdmi.txt.
+- interrupts: HDMI interrupt number.
+- clocks: See dw_hdmi.txt.
+- clock-names: Must contain "iahb" and "isfr" as defined in dw_hdmi.txt.
+- ports: See dw_hdmi.txt. The DWC HDMI shall have one port numbered 0
+ corresponding to the video input of the controller and one port numbered 1
+ corresponding to its HDMI output.
+
+Example:
+
+hdmi: hdmi@0x10000 {
+ compatible = "snps,dw-hdmi-hsdk";
+ reg = <0x10000 0x10000>;
+ reg-io-width = <4>;
+ interrupts = <14>;
+ clocks = <&apbclk>, <&hdmi_pix_clk>;
+ clock-names = "iahb", "isfr";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ hdmi_enc_input: endpoint {
+ remote-endpoint = <&pgu_output>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ hdmi_enc_out: endpoint {
+ remote-endpoint = <&hdmi_con>;
+ };
+ };
+ };
+};
+
+hdmi-out {
+ ...
+
+ port {
+ hdmi_con: endpoint {
+ remote-endpoint = <&hdmi_enc_out>;
+ };
+ };
+};
+
+pgu {
+ ...
+
+ port_o: port {
+ pgu_output: endpoint {
+ remote-endpoint = <&hdmi_enc_input>;
+ };
+ };
+};
--
2.21.1
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