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Diffstat (limited to 'kernel/Documentation/devicetree/bindings/video/exynos_dp.txt')
| -rw-r--r-- | kernel/Documentation/devicetree/bindings/video/exynos_dp.txt | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/kernel/Documentation/devicetree/bindings/video/exynos_dp.txt b/kernel/Documentation/devicetree/bindings/video/exynos_dp.txt new file mode 100644 index 000000000..7a3a9cdb8 --- /dev/null +++ b/kernel/Documentation/devicetree/bindings/video/exynos_dp.txt @@ -0,0 +1,120 @@ +The Exynos display port interface should be configured based on +the type of panel connected to it. + +We use two nodes: + -dp-controller node + -dptx-phy node(defined inside dp-controller node) + +For the DP-PHY initialization, we use the dptx-phy node. +Required properties for dptx-phy: deprecated, use phys and phy-names + -reg: deprecated + Base address of DP PHY register. + -samsung,enable-mask: deprecated + The bit-mask used to enable/disable DP PHY. + +For the Panel initialization, we read data from dp-controller node. +Required properties for dp-controller: + -compatible: + should be "samsung,exynos5-dp". + -reg: + physical base address of the controller and length + of memory mapped region. + -interrupts: + interrupt combiner values. + -clocks: + from common clock binding: handle to dp clock. + -clock-names: + from common clock binding: Shall be "dp". + -interrupt-parent: + phandle to Interrupt combiner node. + -phys: + from general PHY binding: the phandle for the PHY device. + -phy-names: + from general PHY binding: Should be "dp". + -samsung,color-space: + input video data format. + COLOR_RGB = 0, COLOR_YCBCR422 = 1, COLOR_YCBCR444 = 2 + -samsung,dynamic-range: + dynamic range for input video data. + VESA = 0, CEA = 1 + -samsung,ycbcr-coeff: + YCbCr co-efficients for input video. + COLOR_YCBCR601 = 0, COLOR_YCBCR709 = 1 + -samsung,color-depth: + number of bits per colour component. + COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3 + -samsung,link-rate: + link rate supported by the panel. + LINK_RATE_1_62GBPS = 0x6, LINK_RATE_2_70GBPS = 0x0A + -samsung,lane-count: + number of lanes supported by the panel. + LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4 + - display-timings: timings for the connected panel as described by + Documentation/devicetree/bindings/video/display-timing.txt + +Optional properties for dp-controller: + -interlaced: + interlace scan mode. + Progressive if defined, Interlaced if not defined + -vsync-active-high: + VSYNC polarity configuration. + High if defined, Low if not defined + -hsync-active-high: + HSYNC polarity configuration. + High if defined, Low if not defined + -samsung,hpd-gpio: + Hotplug detect GPIO. + Indicates which GPIO should be used for hotplug + detection + -video interfaces: Device node can contain video interface port + nodes according to [1]. + +[1]: Documentation/devicetree/bindings/media/video-interfaces.txt + +Example: + +SOC specific portion: + dp-controller { + compatible = "samsung,exynos5-dp"; + reg = <0x145b0000 0x10000>; + interrupts = <10 3>; + interrupt-parent = <&combiner>; + clocks = <&clock 342>; + clock-names = "dp"; + + phys = <&dp_phy>; + phy-names = "dp"; + }; + +Board Specific portion: + dp-controller { + samsung,color-space = <0>; + samsung,dynamic-range = <0>; + samsung,ycbcr-coeff = <0>; + samsung,color-depth = <1>; + samsung,link-rate = <0x0a>; + samsung,lane-count = <4>; + + display-timings { + native-mode = <&lcd_timing>; + lcd_timing: 1366x768 { + clock-frequency = <70589280>; + hactive = <1366>; + vactive = <768>; + hfront-porch = <40>; + hback-porch = <40>; + hsync-len = <32>; + vback-porch = <10>; + vfront-porch = <12>; + vsync-len = <6>; + }; + }; + + ports { + port@0 { + dp_out: endpoint { + remote-endpoint = <&bridge_in>; + }; + }; + }; + }; |