Re: [RFC 2/8] dt-bindings: video: Add jz4780-hdmi binding
From: Rob Herring <robh@kernel.org>
Date: 2020-03-03 14:40:52
Also in:
dri-devel, linux-gpio, linux-mips, lkml
On Wed, Feb 26, 2020 at 08:12:54PM +0100, H. Nikolaus Schaller wrote:
quoted hunk ↗ jump to hunk
From: Zubair Lutfullah Kakakhel <redacted> Add DT bindings for the hdmi driver for the Ingenic JZ4780 SoC. Signed-off-by: Zubair Lutfullah Kakakhel <redacted> --- .../bindings/display/ingenic-jz4780-hdmi.txt | 41 +++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.txtdiff --git a/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.txt b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.txt new file mode 100644 index 000000000000..f02e59fbdd5a --- /dev/null +++ b/Documentation/devicetree/bindings/display/ingenic-jz4780-hdmi.txt@@ -0,0 +1,41 @@ +Device-Tree bindings for Ingenic JZ4780 HDMI Transmitter + +The HDMI Transmitter in the Ingenic JZ4780 is a Synopsys DesignWare HDMI 1.4 +TX controller IP with accompanying PHY IP. + +Required properties: + - #address-cells : should be <1> + - #size-cells : should be <0>
These aren't in the example.
+ - compatible : should be "ingenic,jz4780-hdmi" + - reg-io-width: must be <4>
If it can only be 4, then you can just assume that from the compatible.
+ - clocks: phandle to isrf and iahb clocks + - clock-names : must be "isrf" and "iahb" + - ports: Port nodes with endpoint definitions as defined in + Documentation/devicetree/bindings/media/video-interfaces.txt, + +Optional properties: + - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing
This goes in a connector node. It's not part of the HDMI block. That also means you need an out port to the connector.
+
+example:
+
+hdmi: hdmi@10180000 {
+ compatible = "ingenic,jz4780-hdmi";
+ reg = <0x10180000 0x8000>;
+ reg-io-width = <4>;
+ ddc-i2c-bus = <&i2c4>;
+ interrupt-parent = <&intc>;
+ interrupts = <3>;
+ clocks = <&cgu JZ4780_CLK_HDMI>, <&cgu JZ4780_CLK_AHB0>;
+ clock-names = "isfr", "iahb";
+
+ ports {
+ hdmi_in: port {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ hdmi_in_lcd: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&jz4780_out_hdmi>;
+ };
+ };
+ };
+};
--
2.23.0