64 lines
2 KiB
Plaintext
Executable file
64 lines
2 KiB
Plaintext
Executable file
Rockchip DWC HDMI TX Encoder
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============================
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The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP
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with a companion PHY IP.
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These DT bindings follow the Synopsys DWC HDMI TX bindings defined in
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Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt with the
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following device-specific properties.
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Required properties:
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- compatible: should be one of the following:
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"rockchip,rk3288-dw-hdmi"
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"rockchip,rk3399-dw-hdmi"
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- reg: See dw_hdmi.txt.
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- reg-io-width: See dw_hdmi.txt. Shall be 4.
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- interrupts: HDMI interrupt number
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- clocks: See dw_hdmi.txt.
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- clock-names: Shall contain "iahb" and "isfr" as defined in dw_hdmi.txt.
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- ports: See dw_hdmi.txt. The DWC HDMI shall have a single port numbered 0
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corresponding to the video input of the controller. The port shall have two
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endpoints, numbered 0 and 1, connected respectively to the vopb and vopl.
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- rockchip,grf: Shall reference the GRF to mux vopl/vopb.
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Optional properties
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- ddc-i2c-bus: The HDMI DDC bus can be connected to either a system I2C master
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or the functionally-reduced I2C master contained in the DWC HDMI. When
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connected to a system I2C master this property contains a phandle to that
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I2C master controller.
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- clock-names: See dw_hdmi.txt. The "cec" clock is optional.
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- clock-names: May contain "cec" as defined in dw_hdmi.txt.
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- clock-names: May contain "grf", power for grf io.
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- clock-names: May contain "vpll", external clock for some hdmi phy.
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Example:
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hdmi: hdmi@ff980000 {
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compatible = "rockchip,rk3288-dw-hdmi";
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reg = <0xff980000 0x20000>;
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reg-io-width = <4>;
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ddc-i2c-bus = <&i2c5>;
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rockchip,grf = <&grf>;
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interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cru PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>;
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clock-names = "iahb", "isfr";
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ports {
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hdmi_in: port {
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#address-cells = <1>;
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#size-cells = <0>;
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hdmi_in_vopb: endpoint@0 {
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reg = <0>;
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remote-endpoint = <&vopb_out_hdmi>;
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};
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hdmi_in_vopl: endpoint@1 {
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reg = <1>;
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remote-endpoint = <&vopl_out_hdmi>;
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};
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};
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};
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};
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