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-rw-r--r--Documentation/devicetree/bindings/video/exynos_dp.txt80
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1The Exynos display port interface should be configured based on
2the type of panel connected to it.
3
4We use two nodes:
5 -dp-controller node
6 -dptx-phy node(defined inside dp-controller node)
7
8For the DP-PHY initialization, we use the dptx-phy node.
9Required properties for dptx-phy:
10 -reg:
11 Base address of DP PHY register.
12 -samsung,enable-mask:
13 The bit-mask used to enable/disable DP PHY.
14
15For the Panel initialization, we read data from dp-controller node.
16Required properties for dp-controller:
17 -compatible:
18 should be "samsung,exynos5-dp".
19 -reg:
20 physical base address of the controller and length
21 of memory mapped region.
22 -interrupts:
23 interrupt combiner values.
24 -interrupt-parent:
25 phandle to Interrupt combiner node.
26 -samsung,color-space:
27 input video data format.
28 COLOR_RGB = 0, COLOR_YCBCR422 = 1, COLOR_YCBCR444 = 2
29 -samsung,dynamic-range:
30 dynamic range for input video data.
31 VESA = 0, CEA = 1
32 -samsung,ycbcr-coeff:
33 YCbCr co-efficients for input video.
34 COLOR_YCBCR601 = 0, COLOR_YCBCR709 = 1
35 -samsung,color-depth:
36 number of bits per colour component.
37 COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3
38 -samsung,link-rate:
39 link rate supported by the panel.
40 LINK_RATE_1_62GBPS = 0x6, LINK_RATE_2_70GBPS = 0x0A
41 -samsung,lane-count:
42 number of lanes supported by the panel.
43 LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
44
45Optional properties for dp-controller:
46 -interlaced:
47 interlace scan mode.
48 Progressive if defined, Interlaced if not defined
49 -vsync-active-high:
50 VSYNC polarity configuration.
51 High if defined, Low if not defined
52 -hsync-active-high:
53 HSYNC polarity configuration.
54 High if defined, Low if not defined
55
56Example:
57
58SOC specific portion:
59 dp-controller {
60 compatible = "samsung,exynos5-dp";
61 reg = <0x145b0000 0x10000>;
62 interrupts = <10 3>;
63 interrupt-parent = <&combiner>;
64
65 dptx-phy {
66 reg = <0x10040720>;
67 samsung,enable-mask = <1>;
68 };
69
70 };
71
72Board Specific portion:
73 dp-controller {
74 samsung,color-space = <0>;
75 samsung,dynamic-range = <0>;
76 samsung,ycbcr-coeff = <0>;
77 samsung,color-depth = <1>;
78 samsung,link-rate = <0x0a>;
79 samsung,lane-count = <4>;
80 };