arm64: dts: imx8qm-mek: Add LVDS0/1 PWM backlight support

This patch adds LVDS0/1 PWM backlight support
for the i.MX8QM MEK platform.

Signed-off-by: Liu Ying <victor.liu@nxp.com>

diff --git a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
index b693e71..a139f9b 100755 (executable)
--- a/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
+++ b/arch/arm64/boot/dts/freescale/imx8qm-mek.dts
@@ -30,6 +30,42 @@
                pinctrl-2 = <&pinctrl_wifi>;
        };
 
+       lvds_backlight0: lvds_backlight@0 {
+               compatible = "pwm-backlight";
+               pwms = <&pwm_lvds0 0 100000 0>;
+
+               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 = <80>;
+       };
+
+       lvds_backlight1: lvds_backlight@1 {
+               compatible = "pwm-backlight";
+               pwms = <&pwm_lvds1 0 100000 0>;
+
+               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 = <80>;
+       };
+
        modem_reset: modem-reset {
                compatible = "gpio-reset";
                pinctrl-names = "default", "sleep";
@@ -435,6 +471,12 @@
        status = "okay";
 };
 
+&pwm_lvds0 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm_lvds0>;
+       status = "okay";
+};
+
 &i2c1_lvds0 {
        #address-cells = <1>;
        #size-cells = <0>;
@@ -546,6 +588,12 @@
        status = "okay";
 };
 
+&pwm_lvds1 {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_pwm_lvds1>;
+       status = "okay";
+};
+
 &i2c1_lvds1 {
        #address-cells = <1>;
        #size-cells = <0>;
@@ -1237,6 +1285,18 @@
                >;
        };
 
+       pinctrl_pwm_lvds0: pwmlvds0grp {
+               fsl,pins = <
+                       IMX8QM_LVDS0_GPIO00_LVDS0_PWM0_OUT              0x00000020
+               >;
+       };
+
+       pinctrl_pwm_lvds1: pwmlvds1grp {
+               fsl,pins = <
+                       IMX8QM_LVDS1_GPIO00_LVDS1_PWM0_OUT              0x00000020
+               >;
+       };
+
        pinctrl_modem_reset: modemresetgrp {
                fsl,pins = <
                        IMX8QM_QSPI1A_DQS_LSIO_GPIO4_IO22               0x06000021