About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Documentation / devicetree / bindings / video / exynos_dp.txt




Custom Search

Based on kernel version 3.16. Page generated on 2014-08-06 21:38 EST.

1	The Exynos display port interface should be configured based on
2	the type of panel connected to it.
3	
4	We use two nodes:
5		-dp-controller node
6		-dptx-phy node(defined inside dp-controller node)
7	
8	For the DP-PHY initialization, we use the dptx-phy node.
9	Required properties for dptx-phy: deprecated, use phys and phy-names
10		-reg: deprecated
11			Base address of DP PHY register.
12		-samsung,enable-mask: deprecated
13			The bit-mask used to enable/disable DP PHY.
14	
15	For the Panel initialization, we read data from dp-controller node.
16	Required 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		-clocks:
25			from common clock binding: handle to dp clock.
26		-clock-names:
27			from common clock binding: Shall be "dp".
28		-interrupt-parent:
29			phandle to Interrupt combiner node.
30		-phys:
31			from general PHY binding: the phandle for the PHY device.
32		-phy-names:
33			from general PHY binding: Should be "dp".
34		-samsung,color-space:
35			input video data format.
36				COLOR_RGB = 0, COLOR_YCBCR422 = 1, COLOR_YCBCR444 = 2
37		-samsung,dynamic-range:
38			dynamic range for input video data.
39				VESA = 0, CEA = 1
40		-samsung,ycbcr-coeff:
41			YCbCr co-efficients for input video.
42				COLOR_YCBCR601 = 0, COLOR_YCBCR709 = 1
43		-samsung,color-depth:
44			number of bits per colour component.
45				COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3
46		-samsung,link-rate:
47			link rate supported by the panel.
48				LINK_RATE_1_62GBPS = 0x6, LINK_RATE_2_70GBPS = 0x0A
49		-samsung,lane-count:
50			number of lanes supported by the panel.
51				LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
52		- display-timings: timings for the connected panel as described by
53			Documentation/devicetree/bindings/video/display-timing.txt
54	
55	Optional properties for dp-controller:
56		-interlaced:
57			interlace scan mode.
58				Progressive if defined, Interlaced if not defined
59		-vsync-active-high:
60			VSYNC polarity configuration.
61				High if defined, Low if not defined
62		-hsync-active-high:
63			HSYNC polarity configuration.
64				High if defined, Low if not defined
65		-samsung,hpd-gpio:
66			Hotplug detect GPIO.
67				Indicates which GPIO should be used for hotplug
68				detection
69	
70	Example:
71	
72	SOC specific portion:
73		dp-controller {
74			compatible = "samsung,exynos5-dp";
75			reg = <0x145b0000 0x10000>;
76			interrupts = <10 3>;
77			interrupt-parent = <&combiner>;
78			clocks = <&clock 342>;
79			clock-names = "dp";
80	
81			phys = <&dp_phy>;
82			phy-names = "dp";
83		};
84	
85	Board Specific portion:
86		dp-controller {
87			samsung,color-space = <0>;
88			samsung,dynamic-range = <0>;
89			samsung,ycbcr-coeff = <0>;
90			samsung,color-depth = <1>;
91			samsung,link-rate = <0x0a>;
92			samsung,lane-count = <4>;
93	
94			display-timings {
95				native-mode = <&lcd_timing>;
96				lcd_timing: 1366x768 {
97					clock-frequency = <70589280>;
98					hactive = <1366>;
99					vactive = <768>;
100					hfront-porch = <40>;
101					hback-porch = <40>;
102					hsync-len = <32>;
103					vback-porch = <10>;
104					vfront-porch = <12>;
105					vsync-len = <6>;
106				};
107			};
108		};
Hide Line Numbers
About Kernel Documentation Linux Kernel Contact Linux Resources Linux Blog

Information is copyright its respective author. All material is available from the Linux Kernel Source distributed under a GPL License. This page is provided as a free service by mjmwired.net.