ARM: dts: ux500-skomer: Add KTD253 backlight

This enables the KTD253 backlight found on the Samsung
GT-S7710 "Skomer".

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20200828223034.40983-1-linus.walleij@linaro.org

diff --git a/arch/arm/boot/dts/ste-ux500-samsung-skomer.dts b/arch/arm/boot/dts/ste-ux500-samsung-skomer.dts
index d6f6ac0..27722c4 100644 (file)
--- a/arch/arm/boot/dts/ste-ux500-samsung-skomer.dts
+++ b/arch/arm/boot/dts/ste-ux500-samsung-skomer.dts
@@ -108,15 +108,12 @@
                };
        };
 
-       /*
-        * FIXME: this is not quite GPIO backlight. This is a
-        * KTD253 one-wire GPIO-controlled backlight. It can
-        * work as a GPIO backlight.
-        */
-       gpio_bl: backlight {
-               compatible = "gpio-backlight";
+       ktd253: backlight {
+               compatible = "kinetic,ktd253";
                /* GPIO 69 */
-               gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
+               enable-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
+               /* Default to 13/32 brightness */
+               default-brightness = <13>;
                pinctrl-names = "default";
                pinctrl-0 = <&gpio_backlight_default_mode>;
        };
@@ -409,7 +406,7 @@
                                        reset-gpios = <&gpio4 11 GPIO_ACTIVE_LOW>;
                                        pinctrl-names = "default";
                                        pinctrl-0 = <&display_default_mode>;
-                                       backlight = <&gpio_bl>;
+                                       backlight = <&ktd253>;
                                };
                        };
                };