mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.3 KiB
88 lines
2.3 KiB
Atmel LCDC Framebuffer |
|
----------------------------------------------------- |
|
|
|
Required properties: |
|
- compatible : |
|
"atmel,at91sam9261-lcdc" , |
|
"atmel,at91sam9263-lcdc" , |
|
"atmel,at91sam9g10-lcdc" , |
|
"atmel,at91sam9g45-lcdc" , |
|
"atmel,at91sam9g45es-lcdc" , |
|
"atmel,at91sam9rl-lcdc" , |
|
"atmel,at32ap-lcdc" |
|
- reg : Should contain 1 register ranges(address and length). |
|
Can contain an additional register range(address and length) |
|
for fixed framebuffer memory. Useful for dedicated memories. |
|
- interrupts : framebuffer controller interrupt |
|
- display: a phandle pointing to the display node |
|
|
|
Required nodes: |
|
- display: a display node is required to initialize the lcd panel |
|
This should be in the board dts. |
|
- default-mode: a videomode within the display with timing parameters |
|
as specified below. |
|
|
|
Optional properties: |
|
- lcd-supply: Regulator for LCD supply voltage. |
|
|
|
Example: |
|
|
|
fb0: fb@00500000 { |
|
compatible = "atmel,at91sam9g45-lcdc"; |
|
reg = <0x00500000 0x1000>; |
|
interrupts = <23 3 0>; |
|
pinctrl-names = "default"; |
|
pinctrl-0 = <&pinctrl_fb>; |
|
display = <&display0>; |
|
#address-cells = <1>; |
|
#size-cells = <1>; |
|
|
|
}; |
|
|
|
Example for fixed framebuffer memory: |
|
|
|
fb0: fb@00500000 { |
|
compatible = "atmel,at91sam9263-lcdc"; |
|
reg = <0x00700000 0x1000 0x70000000 0x200000>; |
|
[...] |
|
}; |
|
|
|
Atmel LCDC Display |
|
----------------------------------------------------- |
|
Required properties (as per of_videomode_helper): |
|
|
|
- atmel,dmacon: dma controller configuration |
|
- atmel,lcdcon2: lcd controller configuration |
|
- atmel,guard-time: lcd guard time (Delay in frame periods) |
|
- bits-per-pixel: lcd panel bit-depth. |
|
|
|
Optional properties (as per of_videomode_helper): |
|
- atmel,lcdcon-backlight: enable backlight |
|
- atmel,lcdcon-backlight-inverted: invert backlight PWM polarity |
|
- atmel,lcd-wiring-mode: lcd wiring mode "RGB" or "BRG" |
|
- atmel,power-control-gpio: gpio to power on or off the LCD (as many as needed) |
|
|
|
Example: |
|
display0: display { |
|
bits-per-pixel = <32>; |
|
atmel,lcdcon-backlight; |
|
atmel,dmacon = <0x1>; |
|
atmel,lcdcon2 = <0x80008002>; |
|
atmel,guard-time = <9>; |
|
atmel,lcd-wiring-mode = <1>; |
|
|
|
display-timings { |
|
native-mode = <&timing0>; |
|
timing0: timing0 { |
|
clock-frequency = <9000000>; |
|
hactive = <480>; |
|
vactive = <272>; |
|
hback-porch = <1>; |
|
hfront-porch = <1>; |
|
vback-porch = <40>; |
|
vfront-porch = <1>; |
|
hsync-len = <45>; |
|
vsync-len = <1>; |
|
}; |
|
}; |
|
};
|
|
|