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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: 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
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 -clocks:
25 from common clock binding: handle to dp clock.
26 -clock-names:
27 from common clock binding: Shall be "dp".
28 -phys:
29 from general PHY binding: the phandle for the PHY device.
30 -phy-names:
31 from general PHY binding: Should be "dp".
32
33Optional properties for dp-controller:
34 -interlaced:
35 interlace scan mode.
36 Progressive if defined, Interlaced if not defined
37 -vsync-active-high:
38 VSYNC polarity configuration.
39 High if defined, Low if not defined
40 -hsync-active-high:
41 HSYNC polarity configuration.
42 High if defined, Low if not defined
43 -samsung,hpd-gpio:
44 Hotplug detect GPIO.
45 Indicates which GPIO should be used for hotplug
46 detection
47 -video interfaces: Device node can contain video interface port
48 nodes according to [1].
49 - display-timings: timings for the connected panel as described by
50 Documentation/devicetree/bindings/display/panel/display-timing.txt
51
52For the below properties, please refer to Analogix DP binding document:
53 * Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
54 -phys (required)
55 -phy-names (required)
56 -hpd-gpios (optional)
57 force-hpd (optional)
58
59Deprecated properties for DisplayPort:
60-interlaced: deprecated prop that can parsed from drm_display_mode.
61-vsync-active-high: deprecated prop that can parsed from drm_display_mode.
62-hsync-active-high: deprecated prop that can parsed from drm_display_mode.
63-samsung,ycbcr-coeff: deprecated prop that can parsed from drm_display_mode.
64-samsung,dynamic-range: deprecated prop that can parsed from drm_display_mode.
65-samsung,color-space: deprecated prop that can parsed from drm_display_info.
66-samsung,color-depth: deprecated prop that can parsed from drm_display_info.
67-samsung,link-rate: deprecated prop that can reading from monitor by dpcd method.
68-samsung,lane-count: deprecated prop that can reading from monitor by dpcd method.
69-samsung,hpd-gpio: deprecated name for hpd-gpios.
70
71-------------------------------------------------------------------------------
72
73Example:
74
75SOC specific portion:
76 dp-controller {
77 compatible = "samsung,exynos5-dp";
78 reg = <0x145b0000 0x10000>;
79 interrupts = <10 3>;
80 interrupt-parent = <&combiner>;
81 clocks = <&clock 342>;
82 clock-names = "dp";
83
84 phys = <&dp_phy>;
85 phy-names = "dp";
86 };
87
88Board Specific portion:
89 dp-controller {
90 display-timings {
91 native-mode = <&lcd_timing>;
92 lcd_timing: 1366x768 {
93 clock-frequency = <70589280>;
94 hactive = <1366>;
95 vactive = <768>;
96 hfront-porch = <40>;
97 hback-porch = <40>;
98 hsync-len = <32>;
99 vback-porch = <10>;
100 vfront-porch = <12>;
101 vsync-len = <6>;
102 };
103 };
104
105 ports {
106 port@0 {
107 dp_out: endpoint {
108 remote-endpoint = <&bridge_in>;
109 };
110 };
111 };
112 };