Den 29.11.2017 04.01, skrev David Lechner:
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
.../bindings/display/sitronix,st7735r.txt | 35 ++++++++++++++++++++++ 1 file changed, 35 insertions(+) create mode 100644 Documentation/devicetree/bindings/display/sitronix,st7735r.txt
diff --git a/Documentation/devicetree/bindings/display/sitronix,st7735r.txt b/Documentation/devicetree/bindings/display/sitronix,st7735r.txt new file mode 100644 index 0000000..bbb8ba6 --- /dev/null +++ b/Documentation/devicetree/bindings/display/sitronix,st7735r.txt @@ -0,0 +1,35 @@ +Sitronix ST7735R display panels
+This binding is for display panels using a Sitronix ST7735R controller in SPI +mode.
+Required properties: +- compatible: "sitronix,st7735r-jd-t18003-t01" +- dc-gpios: Display data/command selection (D/CX) +- reset-gpios: Reset signal (RSTX)
I'm wondering if this should be optional.
Even though the display needs the reset line to be driven, it doesn't have to be so by a gpio, I believe you can even get away with just using a resistor as a reset circuit.
Not terribly important, it's up to you.
Noralf.
+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 = "sitronix,st7735r-jd-t18003-t01";reg = <0>;spi-max-frequency = <32000000>;dc-gpios = <&gpio 43 GPIO_ACTIVE_HIGH>;reset-gpios = <&gpio 80 GPIO_ACTIVE_HIGH>;rotation = <270>;backlight = &backlight;- };