diff --git a/arch/arm/boot/dts/rk3288-firefly-reload.dts b/arch/arm/boot/dts/rk3288-firefly-reload.dts
index 2b1f7a3a495f..df92eef2ead5 100644
--- a/arch/arm/boot/dts/rk3288-firefly-reload.dts
+++ b/arch/arm/boot/dts/rk3288-firefly-reload.dts
@@ -129,6 +129,10 @@
 		};
 	};
 
+	backlight: backlight {
+		pwms = <&pwm1 0 1000000 0>;
+	};
+
 	display-subsystem {
 		status = "okay";
 		route {
diff --git a/arch/arm/boot/dts/rk3288-firefly-rk808.dts b/arch/arm/boot/dts/rk3288-firefly-rk808.dts
index b971f6d80bfe..5bbb7c85f4f9 100644
--- a/arch/arm/boot/dts/rk3288-firefly-rk808.dts
+++ b/arch/arm/boot/dts/rk3288-firefly-rk808.dts
@@ -138,6 +138,10 @@
 		};
 	};
 
+	backlight: backlight {
+		pwms = <&pwm1 0 1000000 0>;
+	};
+
 	display-subsystem {
 		status = "okay";
 		ports = <&vopb_out>, <&vopl_out>;