projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 01f8c951 LP |
1 | Rockchip DWC HDMI TX Encoder |
| 2 | ============================ | |
| 3 | ||
| 4 | The HDMI transmitter is a Synopsys DesignWare HDMI 1.4 TX controller IP | |
| 5 | with a companion PHY IP. | |
| 6 | ||
| 7 | These DT bindings follow the Synopsys DWC HDMI TX bindings defined in | |
| 8 | Documentation/devicetree/bindings/display/bridge/dw_hdmi.txt with the | |
| 9 | following device-specific properties. | |
| 10 | ||
| 74af9e4d AY |
11 | |
| 12 | Required properties: | |
| 01f8c951 | 13 | |
| 6445e394 MY |
14 | - compatible: should be one of the following: |
| 15 | "rockchip,rk3288-dw-hdmi" | |
| 16 | "rockchip,rk3399-dw-hdmi" | |
| 01f8c951 LP |
17 | - reg: See dw_hdmi.txt. |
| 18 | - reg-io-width: See dw_hdmi.txt. Shall be 4. | |
| 74af9e4d | 19 | - interrupts: HDMI interrupt number |
| 01f8c951 LP |
20 | - clocks: See dw_hdmi.txt. |
| 21 | - clock-names: Shall contain "iahb" and "isfr" as defined in dw_hdmi.txt. | |
| 22 | - ports: See dw_hdmi.txt. The DWC HDMI shall have a single port numbered 0 | |
| 23 | corresponding to the video input of the controller. The port shall have two | |
| 24 | endpoints, numbered 0 and 1, connected respectively to the vopb and vopl. | |
| 25 | - rockchip,grf: Shall reference the GRF to mux vopl/vopb. | |
| 74af9e4d AY |
26 | |
| 27 | Optional properties | |
| 01f8c951 LP |
28 | |
| 29 | - ddc-i2c-bus: The HDMI DDC bus can be connected to either a system I2C master | |
| 30 | or the functionally-reduced I2C master contained in the DWC HDMI. When | |
| 31 | connected to a system I2C master this property contains a phandle to that | |
| 32 | I2C master controller. | |
| 33 | - clock-names: See dw_hdmi.txt. The "cec" clock is optional. | |
| 34 | - clock-names: May contain "cec" as defined in dw_hdmi.txt. | |
| 8814b40b | 35 | - clock-names: May contain "grf", power for grf io. |
| 5e3bc6d1 | 36 | - clock-names: May contain "vpll", external clock for some hdmi phy. |
| 74af9e4d AY |
37 | |
| 38 | Example: | |
| 01f8c951 | 39 | |
| 74af9e4d AY |
40 | hdmi: hdmi@ff980000 { |
| 41 | compatible = "rockchip,rk3288-dw-hdmi"; | |
| 42 | reg = <0xff980000 0x20000>; | |
| 43 | reg-io-width = <4>; | |
| 44 | ddc-i2c-bus = <&i2c5>; | |
| 45 | rockchip,grf = <&grf>; | |
| 46 | interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>; | |
| 47 | clocks = <&cru PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>; | |
| 48 | clock-names = "iahb", "isfr"; | |
| 74af9e4d AY |
49 | ports { |
| 50 | hdmi_in: port { | |
| 51 | #address-cells = <1>; | |
| 52 | #size-cells = <0>; | |
| 53 | hdmi_in_vopb: endpoint@0 { | |
| 54 | reg = <0>; | |
| 55 | remote-endpoint = <&vopb_out_hdmi>; | |
| 56 | }; | |
| 57 | hdmi_in_vopl: endpoint@1 { | |
| 58 | reg = <1>; | |
| 59 | remote-endpoint = <&vopl_out_hdmi>; | |
| 60 | }; | |
| 61 | }; | |
| 62 | }; | |
| 63 | }; |