Kernel-4.18.0-80.el8_panel

Device-Tree bindings for tilcdc DRM generic panel output driver

Required properties:

• compatible: value should be “ti,tilcdc,panel”.
• panel-info: configuration info to configure LCDC correctly for the panel
  • ac-bias: AC Bias Pin Frequency
  • ac-bias-intrpt: AC Bias Pin Transitions per Interrupt
  • dma-burst-sz: DMA burst size
  • bpp: Bits per pixel
  • fdd: FIFO DMA Request Delay
  • sync-edge: Horizontal and Vertical Sync Edge: 0=rising 1=falling
  • sync-ctrl: Horizontal and Vertical Sync: Control: 0=ignore
  • raster-order: Raster Data Order Select: 1=Most-to-least 0=Least-to-most
  • fifo-th: DMA FIFO threshold
• display-timings: typical videomode of lcd panel. Multiple video modes
  can be listed if the panel supports multiple timings, but the ‘native-mode’
  should be the preferred/default resolution. Refer to
  Documentation/devicetree/bindings/display/panel/display-timing.txt for display
  timing binding details.

Optional properties:

• backlight: phandle of the backlight device attached to the panel
• enable-gpios: GPIO pin to enable or disable the panel

Recommended properties:

• pinctrl-names, pinctrl-0: the pincontrol settings to configure
  muxing properly for pins that connect to TFP410 device

Example:

/* Settings for CDTech_S035Q01 / LCD3 cape: */
lcd3 {
    compatible = "ti,tilcdc,panel";
    pinctrl-names = "default";
    pinctrl-0 = <&bone_lcd3_cape_lcd_pins>;
    backlight = <&backlight>;
    enable-gpios = <&gpio3 19 0>;

    panel-info {
        ac-bias           = <255>;
        ac-bias-intrpt    = <0>;
        dma-burst-sz      = <16>;
        bpp               = <16>;
        fdd               = <0x80>;
        sync-edge         = <0>;
        sync-ctrl         = <1>;
        raster-order      = <0>;
        fifo-th           = <0>;
    };
    display-timings {
        native-mode = <&timing0>;
        timing0: 320x240 {
            hactive         = <320>;
            vactive         = <240>;
            hback-porch     = <21>;
            hfront-porch    = <58>;
            hsync-len       = <47>;
            vback-porch     = <11>;
            vfront-porch    = <23>;
            vsync-len       = <2>;
            clock-frequency = <8000000>;
            hsync-active    = <0>;
            vsync-active    = <0>;
        };
    };
};