ARM: dts: imx: add LVDS backlight for Ventana

The GW54xx/GW53xx/GW52xx all support LVDS with a PWM controlled backlight.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>

1 files changed, 19 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
index 523f26f11eea..c91b5a6c769b 100644
--- a/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-gw53xx.dtsi
@@ -30,6 +30,13 @@
                 bootargs = "console=ttymxc1,115200";
         };
 
+        backlight {
+                compatible = "pwm-backlight";
+                pwms = <&pwm4 0 5000000>;
+                brightness-levels = <0 4 8 16 32 64 128 255>;
+                default-brightness-level = <7>;
+        };
+
         leds {
                 compatible = "gpio-leds";
 
@@ -439,6 +446,12 @@
                         >;
                 };
 
+                pinctrl_pwm4: pwm4grp {
+                        fsl,pins = <
+                                MX6QDL_PAD_SD1_CMD__PWM4_OUT            0x1b0b1
+                        >;
+                };
+
                 pinctrl_uart1: uart1grp {
                         fsl,pins = <
                                 MX6QDL_PAD_SD3_DAT7__UART1_TX_DATA      0x1b0b1
@@ -513,6 +526,12 @@
         };
 };
 
+&pwm4 {
+        pinctrl-names = "default";
+        pinctrl-0 = <&pinctrl_pwm4>;
+        status = "okay";
+};
+
 &ssi1 {
         fsl,mode = "i2s-slave";
         status = "okay";