| Dario Binacchi | 1cd2531 | 2020-02-22 14:05:47 +0100 | [diff] [blame^] | 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/display/panel/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 | }; |