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Diffstat (limited to 'Documentation/devicetree/bindings/video/atmel,lcdc.txt')
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diff --git a/Documentation/devicetree/bindings/video/atmel,lcdc.txt b/Documentation/devicetree/bindings/video/atmel,lcdc.txt new file mode 100644 index 000000000000..1ec175eddca8 --- /dev/null +++ b/Documentation/devicetree/bindings/video/atmel,lcdc.txt | |||
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1 | Atmel LCDC Framebuffer | ||
2 | ----------------------------------------------------- | ||
3 | |||
4 | Required properties: | ||
5 | - compatible : | ||
6 | "atmel,at91sam9261-lcdc" , | ||
7 | "atmel,at91sam9263-lcdc" , | ||
8 | "atmel,at91sam9g10-lcdc" , | ||
9 | "atmel,at91sam9g45-lcdc" , | ||
10 | "atmel,at91sam9g45es-lcdc" , | ||
11 | "atmel,at91sam9rl-lcdc" , | ||
12 | "atmel,at32ap-lcdc" | ||
13 | - reg : Should contain 1 register ranges(address and length) | ||
14 | - interrupts : framebuffer controller interrupt | ||
15 | - display: a phandle pointing to the display node | ||
16 | |||
17 | Required nodes: | ||
18 | - display: a display node is required to initialize the lcd panel | ||
19 | This should be in the board dts. | ||
20 | - default-mode: a videomode within the display with timing parameters | ||
21 | as specified below. | ||
22 | |||
23 | Example: | ||
24 | |||
25 | fb0: fb@0x00500000 { | ||
26 | compatible = "atmel,at91sam9g45-lcdc"; | ||
27 | reg = <0x00500000 0x1000>; | ||
28 | interrupts = <23 3 0>; | ||
29 | pinctrl-names = "default"; | ||
30 | pinctrl-0 = <&pinctrl_fb>; | ||
31 | display = <&display0>; | ||
32 | status = "okay"; | ||
33 | #address-cells = <1>; | ||
34 | #size-cells = <1>; | ||
35 | |||
36 | }; | ||
37 | |||
38 | Atmel LCDC Display | ||
39 | ----------------------------------------------------- | ||
40 | Required properties (as per of_videomode_helper): | ||
41 | |||
42 | - atmel,dmacon: dma controler configuration | ||
43 | - atmel,lcdcon2: lcd controler configuration | ||
44 | - atmel,guard-time: lcd guard time (Delay in frame periods) | ||
45 | - bits-per-pixel: lcd panel bit-depth. | ||
46 | |||
47 | Optional properties (as per of_videomode_helper): | ||
48 | - atmel,lcdcon-backlight: enable backlight | ||
49 | - atmel,lcd-wiring-mode: lcd wiring mode "RGB" or "BRG" | ||
50 | - atmel,power-control-gpio: gpio to power on or off the LCD (as many as needed) | ||
51 | |||
52 | Example: | ||
53 | display0: display { | ||
54 | bits-per-pixel = <32>; | ||
55 | atmel,lcdcon-backlight; | ||
56 | atmel,dmacon = <0x1>; | ||
57 | atmel,lcdcon2 = <0x80008002>; | ||
58 | atmel,guard-time = <9>; | ||
59 | atmel,lcd-wiring-mode = <1>; | ||
60 | |||
61 | display-timings { | ||
62 | native-mode = <&timing0>; | ||
63 | timing0: timing0 { | ||
64 | clock-frequency = <9000000>; | ||
65 | hactive = <480>; | ||
66 | vactive = <272>; | ||
67 | hback-porch = <1>; | ||
68 | hfront-porch = <1>; | ||
69 | vback-porch = <40>; | ||
70 | vfront-porch = <1>; | ||
71 | hsync-len = <45>; | ||
72 | vsync-len = <1>; | ||
73 | }; | ||
74 | }; | ||
75 | }; | ||