Documentation/devicetree/bindings/video/atmel,lcdc.txt

   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 Optional properties:
  24 - lcd-supply: Regulator for LCD supply voltage.
  25
  26 Example:
  27
  28         fb0: fb@0x00500000 {
  29                 compatible = "atmel,at91sam9g45-lcdc";
  30                 reg = <0x00500000 0x1000>;
  31                 interrupts = <23 3 0>;
  32                 pinctrl-names = "default";
  33                 pinctrl-0 = <&pinctrl_fb>;
  34                 display = <&display0>;
  35                 status = "okay";
  36                 #address-cells = <1>;
  37                 #size-cells = <1>;
  38
  39         };
  40
  41 Atmel LCDC Display
  42 -----------------------------------------------------
  43 Required properties (as per of_videomode_helper):
  44
  45  - atmel,dmacon: dma controller configuration
  46  - atmel,lcdcon2: lcd controller configuration
  47  - atmel,guard-time: lcd guard time (Delay in frame periods)
  48  - bits-per-pixel: lcd panel bit-depth.
  49
  50 Optional properties (as per of_videomode_helper):
  51  - atmel,lcdcon-backlight: enable backlight
  52  - atmel,lcdcon-backlight-inverted: invert backlight PWM polarity
  53  - atmel,lcd-wiring-mode: lcd wiring mode "RGB" or "BRG"
  54  - atmel,power-control-gpio: gpio to power on or off the LCD (as many as needed)
  55
  56 Example:
  57         display0: display {
  58                 bits-per-pixel = <32>;
  59                 atmel,lcdcon-backlight;
  60                 atmel,dmacon = <0x1>;
  61                 atmel,lcdcon2 = <0x80008002>;
  62                 atmel,guard-time = <9>;
  63                 atmel,lcd-wiring-mode = <1>;
  64
  65                 display-timings {
  66                         native-mode = <&timing0>;
  67                         timing0: timing0 {
  68                                 clock-frequency = <9000000>;
  69                                 hactive = <480>;
  70                                 vactive = <272>;
  71                                 hback-porch = <1>;
  72                                 hfront-porch = <1>;
  73                                 vback-porch = <40>;
  74                                 vfront-porch = <1>;
  75                                 hsync-len = <45>;
  76                                 vsync-len = <1>;
  77                         };
  78                 };
  79         };