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Documentation / devicetree / bindings / video / exynos5433-decon.txt


Based on kernel version 4.3. Page generated on 2015-11-02 12:47 EST.

1	Device-Tree bindings for Samsung Exynos SoC display controller (DECON)
2	
3	DECON (Display and Enhancement Controller) is the Display Controller for the
4	Exynos series of SoCs which transfers the image data from a video memory
5	buffer to an external LCD interface.
6	
7	Required properties:
8	- compatible: value should be "samsung,exynos5433-decon";
9	- reg: physical base address and length of the DECON registers set.
10	- interrupts: should contain a list of all DECON IP block interrupts in the
11		      order: VSYNC, LCD_SYSTEM. The interrupt specifier format
12		      depends on the interrupt controller used.
13	- interrupt-names: should contain the interrupt names: "vsync", "lcd_sys"
14			   in the same order as they were listed in the interrupts
15			   property.
16	- clocks: must include clock specifiers corresponding to entries in the
17		  clock-names property.
18	- clock-names: list of clock names sorted in the same order as the clocks
19		       property. Must contain "aclk_decon", "aclk_smmu_decon0x",
20		       "aclk_xiu_decon0x", "pclk_smmu_decon0x", clk_decon_vclk",
21		       "sclk_decon_eclk"
22	- ports: contains a port which is connected to mic node. address-cells and
23		 size-cells must 1 and 0, respectively.
24	- port: contains an endpoint node which is connected to the endpoint in the mic
25		node. The reg value muset be 0.
26	- i80-if-timings: specify whether the panel which is connected to decon uses
27			  i80 lcd interface or mipi video interface. This node contains
28			  no timing information as that of fimd does. Because there is
29			  no register in decon to specify i80 interface timing value,
30			  it is not needed, but make it remain to use same kind of node
31			  in fimd and exynos7 decon.
32	
33	Example:
34	SoC specific DT entry:
35	decon: decon@13800000 {
36		compatible = "samsung,exynos5433-decon";
37		reg = <0x13800000 0x2104>;
38		clocks = <&cmu_disp CLK_ACLK_DECON>, <&cmu_disp CLK_ACLK_SMMU_DECON0X>,
39			<&cmu_disp CLK_ACLK_XIU_DECON0X>,
40			<&cmu_disp CLK_PCLK_SMMU_DECON0X>,
41			<&cmu_disp CLK_SCLK_DECON_VCLK>,
42			<&cmu_disp CLK_SCLK_DECON_ECLK>;
43		clock-names = "aclk_decon", "aclk_smmu_decon0x", "aclk_xiu_decon0x",
44			"pclk_smmu_decon0x", "sclk_decon_vclk", "sclk_decon_eclk";
45		interrupt-names = "vsync", "lcd_sys";
46		interrupts = <0 202 0>, <0 203 0>;
47	
48		ports {
49			#address-cells = <1>;
50			#size-cells = <0>;
51	
52			port@0 {
53				reg = <0>;
54				decon_to_mic: endpoint {
55					remote-endpoint = <&mic_to_decon>;
56				};
57			};
58		};
59	};
60	
61	Board specific DT entry:
62	&decon {
63		i80-if-timings {
64		};
65	};
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