ARM: dts: sun8i: Add backlight / pwm nodes to sun8i-a23-gt90h-v4

Add nodes for the backlight / pwm found on a23-gt90h-v4 tablets.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

diff --git a/arch/arm/boot/dts/sun8i-a23-gt90h-v4.dts b/arch/arm/boot/dts/sun8i-a23-gt90h-v4.dts
index 6a22ee3dcb552a2e42bb30065392374cca36373e..1be8d5f6134d933b15cb6587107ee64e49b4d023 100644 (file)
--- a/arch/arm/boot/dts/sun8i-a23-gt90h-v4.dts
+++ b/arch/arm/boot/dts/sun8i-a23-gt90h-v4.dts
@@ -47,6 +47,7 @@
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/input/input.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
+#include <dt-bindings/pwm/pwm.h>
 
 / {
        model = "Allwinner GT90H Quad Core Tablet (v4)";
@@ -56,6 +57,16 @@
                serial0 = &r_uart;
        };
 
+       backlight: backlight {
+               compatible = "pwm-backlight";
+               pinctrl-names = "default";
+               pinctrl-0 = <&bl_en_pin_gt90h>;
+               pwms = <&pwm 0 50000 PWM_POLARITY_INVERTED>;
+               brightness-levels = <0 10 20 30 40 50 60 70 80 90 100>;
+               default-brightness-level = <8>;
+               enable-gpios = <&pio 7 6 GPIO_ACTIVE_HIGH>; /* PH6 */
+       };
+
        chosen {
                stdout-path = "serial0:115200n8";
        };
@@ -115,6 +126,13 @@
 };
 
 &pio {
+       bl_en_pin_gt90h: bl_en_pin@0 {
+               allwinner,pins = "PH6";
+               allwinner,function = "gpio_in";
+               allwinner,drive = <SUN4I_PINCTRL_10_MA>;
+               allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
+       };
+
        mmc0_cd_pin_gt90h: mmc0_cd_pin@0 {
                allwinner,pins = "PB4";
                allwinner,function = "gpio_in";
@@ -123,6 +141,12 @@
        };
 };
 
+&pwm {
+       pinctrl-names = "default";
+       pinctrl-0 = <&pwm0_pins>;
+       status = "okay";
+};
+
 &r_rsb {
        status = "okay";