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dt-bindings: Add binding for Sitronix ST7735R display panels 

This adds a new device tree binding for Sitronix ST7735R display panels,
such as the Adafruit 1.8" TFT.

Signed-off-by: David Lechner <david@lechnology.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1514833336-22564-3-git-send-email-david@lechnology.com
This commit is contained in:
David Lechner 2018-01-01 13:02:15 -06:00 committed by Noralf Trønnes
parent 95e2ce7b42
commit 634ab311fc
1 changed files with 35 additions and 0 deletions
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Documentation/devicetree/bindings/display/sitronix,st7735r.txt Normal file
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Sitronix ST7735R display panels
This binding is for display panels using a Sitronix ST7735R controller in SPI
mode.
Required properties:
- compatible: "jianda,jd-t18003-t01", "sitronix,st7735r"
- dc-gpios: Display data/command selection (D/CX)
- reset-gpios: Reset signal (RSTX)
The node for this driver must be a child node of a SPI controller, hence
all mandatory properties described in ../spi/spi-bus.txt must be specified.
Optional properties:
- rotation: panel rotation in degrees counter clockwise (0,90,180,270)
- backlight: phandle of the backlight device attached to the panel
Example:
backlight: backlight {
compatible = "gpio-backlight";
gpios = <&gpio 44 GPIO_ACTIVE_HIGH>;
}
...
display@0{
compatible = "jianda,jd-t18003-t01", "sitronix,st7735r";
reg = <0>;
spi-max-frequency = <32000000>;
dc-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio 80 GPIO_ACTIVE_HIGH>;
rotation = <270>;
backlight = &backlight;
};