1Device-Tree bindings for Samsung Exynos7 SoC display controller (DECON)
2
3DECON (Display and Enhancement Controller) is the Display Controller for the
4Exynos7 series of SoCs which transfers the image data from a video memory
5buffer to an external LCD interface.
6
7Required properties:
8- compatible: value should be "samsung,exynos7-decon";
9
10- reg: physical base address and length of the DECON registers set.
11
12- interrupts: should contain a list of all DECON IP block interrupts in the
13		 order: FIFO Level, VSYNC, LCD_SYSTEM. The interrupt specifier
14		 format depends on the interrupt controller used.
15
16- interrupt-names: should contain the interrupt names: "fifo", "vsync",
17	"lcd_sys", in the same order as they were listed in the interrupts
18        property.
19
20- pinctrl-0: pin control group to be used for this controller.
21
22- pinctrl-names: must contain a "default" entry.
23
24- clocks: must include clock specifiers corresponding to entries in the
25         clock-names property.
26
27- clock-names: list of clock names sorted in the same order as the clocks
28               property. Must contain "pclk_decon0", "aclk_decon0",
29	       "decon0_eclk", "decon0_vclk".
30- i80-if-timings: timing configuration for lcd i80 interface support.
31
32Optional Properties:
33- power-domains: a phandle to DECON power domain node.
34- display-timings: timing settings for DECON, as described in document [1].
35		Can be used in case timings cannot be provided otherwise
36		or to override timings provided by the panel.
37
38[1]: Documentation/devicetree/bindings/display/panel/display-timing.txt
39
40Example:
41
42SoC specific DT entry:
43
44	decon@13930000 {
45		compatible = "samsung,exynos7-decon";
46		interrupt-parent = <&combiner>;
47		reg = <0x13930000 0x1000>;
48		interrupt-names = "lcd_sys", "vsync", "fifo";
49		interrupts = <0 188 0>, <0 189 0>, <0 190 0>;
50		clocks = <&clock_disp PCLK_DECON_INT>,
51			 <&clock_disp ACLK_DECON_INT>,
52			 <&clock_disp SCLK_DECON_INT_ECLK>,
53			 <&clock_disp SCLK_DECON_INT_EXTCLKPLL>;
54		clock-names = "pclk_decon0", "aclk_decon0", "decon0_eclk",
55				"decon0_vclk";
56		status = "disabled";
57	};
58
59Board specific DT entry:
60
61	decon@13930000 {
62		pinctrl-0 = <&lcd_clk &pwm1_out>;
63		pinctrl-names = "default";
64		status = "okay";
65	};
66