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Commit | Line | Data |
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b985172b JCPV |
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" | |
4518996f AS |
13 | - reg : Should contain 1 register ranges(address and length). |
14 | Can contain an additional register range(address and length) | |
15 | for fixed framebuffer memory. Useful for dedicated memories. | |
b985172b JCPV |
16 | - interrupts : framebuffer controller interrupt |
17 | - display: a phandle pointing to the display node | |
18 | ||
19 | Required nodes: | |
20 | - display: a display node is required to initialize the lcd panel | |
21 | This should be in the board dts. | |
22 | - default-mode: a videomode within the display with timing parameters | |
23 | as specified below. | |
24 | ||
2d605456 AS |
25 | Optional properties: |
26 | - lcd-supply: Regulator for LCD supply voltage. | |
27 | ||
b985172b JCPV |
28 | Example: |
29 | ||
4c9847b7 | 30 | fb0: fb@00500000 { |
b985172b JCPV |
31 | compatible = "atmel,at91sam9g45-lcdc"; |
32 | reg = <0x00500000 0x1000>; | |
33 | interrupts = <23 3 0>; | |
34 | pinctrl-names = "default"; | |
35 | pinctrl-0 = <&pinctrl_fb>; | |
36 | display = <&display0>; | |
b985172b JCPV |
37 | #address-cells = <1>; |
38 | #size-cells = <1>; | |
39 | ||
40 | }; | |
41 | ||
4518996f AS |
42 | Example for fixed framebuffer memory: |
43 | ||
4c9847b7 | 44 | fb0: fb@00500000 { |
4518996f AS |
45 | compatible = "atmel,at91sam9263-lcdc"; |
46 | reg = <0x00700000 0x1000 0x70000000 0x200000>; | |
47 | [...] | |
48 | }; | |
49 | ||
b985172b JCPV |
50 | Atmel LCDC Display |
51 | ----------------------------------------------------- | |
52 | Required properties (as per of_videomode_helper): | |
53 | ||
24488c39 HS |
54 | - atmel,dmacon: dma controller configuration |
55 | - atmel,lcdcon2: lcd controller configuration | |
b985172b JCPV |
56 | - atmel,guard-time: lcd guard time (Delay in frame periods) |
57 | - bits-per-pixel: lcd panel bit-depth. | |
58 | ||
59 | Optional properties (as per of_videomode_helper): | |
60 | - atmel,lcdcon-backlight: enable backlight | |
d7aa64c3 | 61 | - atmel,lcdcon-backlight-inverted: invert backlight PWM polarity |
b985172b JCPV |
62 | - atmel,lcd-wiring-mode: lcd wiring mode "RGB" or "BRG" |
63 | - atmel,power-control-gpio: gpio to power on or off the LCD (as many as needed) | |
64 | ||
65 | Example: | |
66 | display0: display { | |
67 | bits-per-pixel = <32>; | |
68 | atmel,lcdcon-backlight; | |
69 | atmel,dmacon = <0x1>; | |
70 | atmel,lcdcon2 = <0x80008002>; | |
71 | atmel,guard-time = <9>; | |
72 | atmel,lcd-wiring-mode = <1>; | |
73 | ||
74 | display-timings { | |
75 | native-mode = <&timing0>; | |
76 | timing0: timing0 { | |
77 | clock-frequency = <9000000>; | |
78 | hactive = <480>; | |
79 | vactive = <272>; | |
80 | hback-porch = <1>; | |
81 | hfront-porch = <1>; | |
82 | vback-porch = <40>; | |
83 | vfront-porch = <1>; | |
84 | hsync-len = <45>; | |
85 | vsync-len = <1>; | |
86 | }; | |
87 | }; | |
88 | }; |