mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-26 22:24:09 +08:00
efdbd7345f
This is a quite large renaming to consolidate display related bindings into a single "display" directory from various scattered locations of video, drm, gpu, fb, mipi, and panel. The prior location was somewhat based on the Linux driver location, but bindings should be independent of that. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org>
90 lines
2.4 KiB
Plaintext
90 lines
2.4 KiB
Plaintext
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@0x00500000 {
|
|
compatible = "atmel,at91sam9g45-lcdc";
|
|
reg = <0x00500000 0x1000>;
|
|
interrupts = <23 3 0>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_fb>;
|
|
display = <&display0>;
|
|
status = "okay";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
};
|
|
|
|
Example for fixed framebuffer memory:
|
|
|
|
fb0: fb@0x00500000 {
|
|
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>;
|
|
};
|
|
};
|
|
};
|