Documentation/devicetree/bindings/drm/tilcdc/panel.txt

   1 Device-Tree bindings for tilcdc DRM generic panel output driver
   2
   3 Required properties:
   4  - compatible: value should be "ti,tilcdc,panel".
   5  - panel-info: configuration info to configure LCDC correctly for the panel
   6    - ac-bias: AC Bias Pin Frequency
   7    - ac-bias-intrpt: AC Bias Pin Transitions per Interrupt
   8    - dma-burst-sz: DMA burst size
   9    - bpp: Bits per pixel
  10    - fdd: FIFO DMA Request Delay
  11    - sync-edge: Horizontal and Vertical Sync Edge: 0=rising 1=falling
  12    - sync-ctrl: Horizontal and Vertical Sync: Control: 0=ignore
  13    - raster-order: Raster Data Order Select: 1=Most-to-least 0=Least-to-most
  14    - fifo-th: DMA FIFO threshold
  15  - display-timings: typical videomode of lcd panel.  Multiple video modes
  16    can be listed if the panel supports multiple timings, but the 'native-mode'
  17    should be the preferred/default resolution.  Refer to
  18    Documentation/devicetree/bindings/video/display-timing.txt for display
  19    timing binding details.
  20
  21 Optional properties:
  22 - backlight: phandle of the backlight device attached to the panel
  23 - enable-gpios: GPIO pin to enable or disable the panel
  24
  25 Recommended properties:
  26  - pinctrl-names, pinctrl-0: the pincontrol settings to configure
  27    muxing properly for pins that connect to TFP410 device
  28
  29 Example:
  30
  31         /* Settings for CDTech_S035Q01 / LCD3 cape: */
  32         lcd3 {
  33                 compatible = "ti,tilcdc,panel";
  34                 pinctrl-names = "default";
  35                 pinctrl-0 = <&bone_lcd3_cape_lcd_pins>;
  36                 backlight = <&backlight>;
  37                 enable-gpios = <&gpio3 19 0>;
  38
  39                 panel-info {
  40                         ac-bias           = <255>;
  41                         ac-bias-intrpt    = <0>;
  42                         dma-burst-sz      = <16>;
  43                         bpp               = <16>;
  44                         fdd               = <0x80>;
  45                         sync-edge         = <0>;
  46                         sync-ctrl         = <1>;
  47                         raster-order      = <0>;
  48                         fifo-th           = <0>;
  49                 };
  50                 display-timings {
  51                         native-mode = <&timing0>;
  52                         timing0: 320x240 {
  53                                 hactive         = <320>;
  54                                 vactive         = <240>;
  55                                 hback-porch     = <21>;
  56                                 hfront-porch    = <58>;
  57                                 hsync-len       = <47>;
  58                                 vback-porch     = <11>;
  59                                 vfront-porch    = <23>;
  60                                 vsync-len       = <2>;
  61                                 clock-frequency = <8000000>;
  62                                 hsync-active    = <0>;
  63                                 vsync-active    = <0>;
  64                         };
  65                 };
  66         };