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authorRob Clark <robdclark@gmail.com>2012-12-18 17:34:16 -0600
committerRob Clark <robdclark@gmail.com>2013-02-19 17:57:45 -0500
commit0d4bbaf9f3e5b9f52150ddc5a4ee8b0ab83a440b (patch)
treeff5634b4f3bbb0b100a14bea54a6b1f6b672b3ef /Documentation/devicetree/bindings/drm
parent6e8de0bd6a51fdeebd5d975c4fcc426f730b339b (diff)
drm/tilcdc: add support for LCD panels (v5)
Add an output panel driver for LCD panels. Tested with LCD3 cape on beaglebone. v1: original v2: s/of_find_node_by_name()/of_get_child_by_name()/ from Pantelis Antoniou v3: add backlight support v4: rebase to latest of video timing helpers v5: remove some unneeded fields from panel-info struct, add DT bindings docs Signed-off-by: Rob Clark <robdclark@gmail.com> Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Diffstat (limited to 'Documentation/devicetree/bindings/drm')
-rw-r--r--Documentation/devicetree/bindings/drm/tilcdc/panel.txt59
1 files changed, 59 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/drm/tilcdc/panel.txt b/Documentation/devicetree/bindings/drm/tilcdc/panel.txt
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+++ b/Documentation/devicetree/bindings/drm/tilcdc/panel.txt
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+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/video/display-timing.txt for display
+ timing binding details.
+
+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>;
+ 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>;
+ };
+ };
+ };