ARM: dts: imx6ul-isiot: Add backlight support for lcdif

This patch add support for lcdif backlight on Is.IoT MX6UL
variant boards.

Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6ul-isiot.dtsi b/arch/arm/boot/dts/imx6ul-isiot.dtsi
index 0b43699af3e366cac6b76b35499c9412a99eb38f..5ccc3dfd1ed80fd4c14958df0ebb56e7901b31d8 100644 (file)
--- a/arch/arm/boot/dts/imx6ul-isiot.dtsi
+++ b/arch/arm/boot/dts/imx6ul-isiot.dtsi
@@ -52,6 +52,29 @@
        chosen {
                stdout-path = &uart1;
        };
+
+       backlight {
+               compatible = "pwm-backlight";
+               pwms = <&pwm8 0 100000>;
+               brightness-levels = < 0  1  2  3  4  5  6  7  8  9
+                                    10 11 12 13 14 15 16 17 18 19
+                                    20 21 22 23 24 25 26 27 28 29
+                                    30 31 32 33 34 35 36 37 38 39
+                                    40 41 42 43 44 45 46 47 48 49
+                                    50 51 52 53 54 55 56 57 58 59
+                                    60 61 62 63 64 65 66 67 68 69
+                                    70 71 72 73 74 75 76 77 78 79
+                                    80 81 82 83 84 85 86 87 88 89
+                                    90 91 92 93 94 95 96 97 98 99
+                                   100>;
+               default-brightness-level = <100>;
+       };
+};
+
+&pwm8 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm8>;
+       status = "okay";
 };
 
 &uart1 {
@@ -72,6 +95,12 @@
 };
 
 &iomuxc {
+       pinctrl_pwm8: pwm8grp {
+               fsl,pins = <
+                       MX6UL_PAD_ENET1_RX_ER__PWM8_OUT   0x110b0
+               >;
+       };
+
        pinctrl_uart1: uart1grp {
                fsl,pins = <
                        MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX 0x1b0b1