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dtoverlays: Add backlight-gpio parameter to vc4-kms-dpi-generic #4815

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Merged
pelwell merged 1 commit into from
Jan 7, 2022
Merged

dtoverlays: Add backlight-gpio parameter to vc4-kms-dpi-generic #4815

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2 changes: 2 additions & 0 deletions arch/arm/boot/dts/overlays/README
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Original file line number Diff line number Diff line change
Expand Up @@ -3625,6 +3625,8 @@ Params: clock-frequency Display clock frequency (Hz)
rgb888 Change to RGB888 output on GPIOs 0-27
bus-format Override the bus format for a MEDIA_BUS_FMT_*
value. NB also overridden by rgbXXX overrides.
backlight-gpio Defines a GPIO to be used for backlight control
(default of none).


Name: vc4-kms-dsi-7inch
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19 changes: 19 additions & 0 deletions arch/arm/boot/dts/overlays/vc4-kms-dpi-generic-overlay.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,23 @@
};
};

fragment@2 {
target = <&panel>;
__dormant__ {
backlight = <&backlight>;
};
};

fragment@3 {
target-path = "/";
__dormant__ {
backlight: backlight {
compatible = "gpio-backlight";
gpios = <&gpio 255 GPIO_ACTIVE_HIGH>;
};
};
};

__overrides__ {
clock-frequency = <&timing>, "clock-frequency:0";
hactive = <&timing>, "hactive:0";
Expand All @@ -88,5 +105,7 @@
rgb888 = <&panel>, "bus-format:0=0x100a",
<&dpi_node>, "pinctrl-0:0=",<&dpi_gpio0>;
bus-format = <&panel>, "bus-format:0";
backlight-gpio = <0>, "+2+3",
<&backlight>, "gpios:4";
};
};