Signed-off-by: Manjunathappa, Prakash <prakash.pm@xxxxxx> --- Documentation/devicetree/bindings/fb/da8xx-fb.txt | 86 +++++++++++++++++++++ 1 files changed, 86 insertions(+), 0 deletions(-) create mode 100644 Documentation/devicetree/bindings/fb/da8xx-fb.txt diff --git a/Documentation/devicetree/bindings/fb/da8xx-fb.txt b/Documentation/devicetree/bindings/fb/da8xx-fb.txt new file mode 100644 index 0000000..3fc2ef9 --- /dev/null +++ b/Documentation/devicetree/bindings/fb/da8xx-fb.txt @@ -0,0 +1,86 @@ +* Texas Instruments DaVinci da8xx-fb + +This file provides information of da830-fb device node. + +Required properties: +- compatible : "ti,da830-lcd" : for DA830, DA850 and am335x platforms +- reg : Offset and length of the register set for the device. +- interrupts : standard interrupt property. +- interrupt-parent : The phandle for the interrupt controller that + services interrupts for this device. +- panel_shade : panel shade for-ex MONOCHROME, PASSIVE, ACTIVE. +- bpp : bits per pixel resolution. +- display-timings: Panel timing information. + +Optional properties: +- ac-bias : AC Bias Pin Frequency. This value defines the + number of Line Clock (LCD_HSYNC) cycles to count + before transitioning signal LCD_AC_ENB_CS. This + output may be used to periodically invert the + polarity of the power supply in order to prevent a + display DC charge build-up on the LCD panel. + +- ac-bias-intrpt : This value is used to specify the number of AC + Bias(LCD_AC_ENB_CS) output transition counts + before setting the AC bias interrupt bit in + register LCD_STAT. This counter is stopped when + the interrupt is set and remains stopped until the + AC bias interrupt status is cleared. A value of + zero will not produce an interrupt. + +- tft-alt-mode : TFT Alternative Signal Mapping +- stn-565-mode : 12-Bit-Per-Pixel (5-6-5) Mode. This is only + available in passive-color (STN) mode when 12 BPP + is specified in the palette. + +- mono-8bit-mode : Mono 8-bit Mode + +- sync-edge : This determines whether the HSYNC/VSYNC is driven + on the rising or falling edge of the pixel clock + +- raster-order : Decides data order, if 0 frame buffer data is + ordered from least-to-most significant bit/nibble/ + byte/word/d-word else most-to- least significant.. + +- panel : panel name along manufacturer name. +- dma-burst-sz : Burst Size setting for DMA transfers +- fifo-threshold : DMA FIFO threshold. The input FIFO becomes ready + so that the Raster controller can start reading + its content only when the number of dwords (1 + dword is 4 bytes) specified by TH_FIFO_READY have + been loaded by the DMA from the frame buffer to + the input FIFO. + +- fdd : FIFO DMA Request Delay. Encoded value used to + specify the number of clocks the input FIFO DMA + request should be disabled. The delay clock count + starts after 16 words are loaded into the input + FIFO. + +Example for da850-evm: + lcd0: lcd@1e13000 { + compatible = "ti,da8xx-lcd"; + reg = <0x213000 0x1000>; + clock-frequency = <150000000>; + interrupts = <52>; + interrupt-parent = <&intc>; + panel_shade = <1>; + bpp = <16>; + display-timings { + default-timing = <&timing0>; + timing0: 480x272p53 { + clock = <7833600>; + hactive = <480>; + vactive = <272>; + hfront-porch = <2>; + hback-porch = <2>; + hsync-len = <41>; + vback-porch = <3>; + vfront-porch = <3>; + vsync-len = <10>; + hsync-active-high; + vsync-active-high; + }; + }; + }; + -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html