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Diffstat (limited to 'Documentation/devicetree/bindings/display/bridge/lontium,lt8912.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/display/bridge/lontium,lt8912.txt | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.txt b/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.txt new file mode 100644 index 000000000000..b66eae06f194 --- /dev/null +++ b/Documentation/devicetree/bindings/display/bridge/lontium,lt8912.txt @@ -0,0 +1,62 @@ +Lontium LT8912 MIPI-DSI to LVDS and HDMI/MHL bridge bindings + +Required properties and nodes: + - compatible: "lontium,lt8912" + - hpd-gpios: a GPIO spec for the hot-plug detect pin + - port: node referencing the MIPI-DSI source + - reg: i2c address of the bridge + - i2c-bus: phandle of an I2C controller used for register access + One of: + - ddc-i2c-bus: reference to a DDC-I2C bus for EDID retrival + - display-timings: hardcoded display timings if ddc-i2c-bus does not exist. + Refer to binding doc display-timing.txt for details + +Optional properties: + - reset-gpios: a GPIO spec for the reset pin + +Examples: +&i2c1 { + lt8912@48 { + compatible = "lontium,lt8912"; + ddc-i2c-bus = <&i2c0>; + hpd-gpios = <&gpio1 31 GPIO_ACTIVE_HIGH>; + reg = <0x48>; + + port { + lt8912_1_in: endpoint { + remote-endpoint = <&mipi_dsi_bridge1_out>; + }; + }; + +&i2c2 { + lt8912@48 { + compatible = "lontium,lt8912"; + hpd-gpios = <&gpio1 31 GPIO_ACTIVE_HIGH>; + reg = <0x48>; + + port { + lt8912_1_in: endpoint { + remote-endpoint = <&mipi_dsi_bridge1_out>; + }; + }; + + display-timings { + native-mode = <&timing0>; + timing0: timing0 { + clock-frequency = <74250000>; + hactive = <1280>; + vactive = <720>; + hfront-porch = <110>; + hsync-len = <40>; + hback-porch = <220>; + vfront-porch = <5>; + vsync-len = <5>; + vback-porch = <20>; + hsync-active = <0>; + vsync-active = <0>; + de-active = <0>; + pixelclk-active = <0>; + }; + }; + }; +}; |