diff mbox

[v4,6/7] arm64: dts: r8a7795: salvator-x: Add panel backlight support

Message ID 20170510070458.21193-7-laurent.pinchart+renesas@ideasonboard.com (mailing list archive)
State Accepted
Delegated to: Simon Horman
Headers show

Commit Message

Laurent Pinchart May 10, 2017, 7:04 a.m. UTC 
The panel backlight is controlled through a GPIO and a PWM channel.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
 arch/arm64/boot/dts/renesas/salvator-x.dtsi | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
diff mbox

Patch

diff --git a/arch/arm64/boot/dts/renesas/salvator-x.dtsi b/arch/arm64/boot/dts/renesas/salvator-x.dtsi
index fd2f6fa523ae..2e199302f93c 100644
--- a/arch/arm64/boot/dts/renesas/salvator-x.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-x.dtsi
@@ -58,6 +58,16 @@ 
 		clock-frequency = <11289600>;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm1 0 50000>;
+
+		brightness-levels = <256 128 64 16 8 4 0>;
+		default-brightness-level = <6>;
+
+		enable-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
+	};
+
 	reg_1p8v: regulator0 {
 		compatible = "regulator-fixed";
 		regulator-name = "fixed-1.8V";
@@ -453,6 +463,11 @@ 
 		function = "i2c2";
 	};
 
+	pwm1_pins: pwm {
+		groups = "pwm1_a";
+		function = "pwm1";
+	};
+
 	scif1_pins: scif1 {
 		groups = "scif1_data_a", "scif1_ctrl";
 		function = "scif1";
@@ -538,6 +553,13 @@ 
 	};
 };
 
+&pwm1 {
+	pinctrl-0 = <&pwm1_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
+
 &rcar_sound {
 	pinctrl-0 = <&sound_pins &sound_clk_pins>;
 	pinctrl-names = "default";