add backlight control to rpi-display overlay

raspberrypi · Jan 2, 2018 · ca592bd · ca592bd
1 parent bb42fcf
commit ca592bd
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Showing 2 changed files with 9 additions and 6 deletions.
diff --git a/arch/arm/boot/dts/overlays/README b/arch/arm/boot/dts/overlays/README
@@ -1329,6 +1329,7 @@ Params: speed                   Display SPI bus speed
         debug                   Debug output level {0-7}
         xohms                   Touchpanel sensitivity (X-plate resistance)
         swapxy                  Swap x and y axis
+        backlight               Change backlight GPIO pin {e.g. 12, 18}
 
 
 Name:   rpi-ft5406

diff --git a/arch/arm/boot/dts/overlays/rpi-display-overlay.dts b/arch/arm/boot/dts/overlays/rpi-display-overlay.dts
@@ -79,11 +79,13 @@
 		};
 	};
 	__overrides__ {
-		speed =   <&rpidisplay>,"spi-max-frequency:0";
-		rotate =  <&rpidisplay>,"rotate:0";
-		fps =     <&rpidisplay>,"fps:0";
-		debug =   <&rpidisplay>,"debug:0";
-		xohms =   <&rpidisplay_ts>,"ti,x-plate-ohms;0";
-		swapxy =  <&rpidisplay_ts>,"ti,swap-xy?";
+		speed =     <&rpidisplay>,"spi-max-frequency:0";
+		rotate =    <&rpidisplay>,"rotate:0";
+		fps =       <&rpidisplay>,"fps:0";
+		debug =     <&rpidisplay>,"debug:0";
+		xohms =     <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+		swapxy =    <&rpidisplay_ts>,"ti,swap-xy?";
+		backlight = <&rpidisplay>,"led-gpios:4",
+		            <&rpi_display_pins>,"brcm,pins:0";
 	};
 };