Commit d8007306 authored Nov 20, 2018 by Peter Rosin Committed by Alexandre Belloni Nov 21, 2018

ARM: dts: at91: nattis: initialize the BLON pin as output-low early



The pwm-backlight driver initializes BLON (the enable gpio) to
output-high if the gpio is input on probe. Initializing the gpio
to output-low before the driver probes prevents this action by
the pwm-backlight driver and gets rid of a nasty blink of full
backlight with an uninitialized panel.

Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

parent 0a4499df

arch/arm/boot/dts/at91-nattis-2-natte-2.dts

+8 −0

Original line number	Diff line number	Diff line
		@@ -60,6 +60,8 @@

		power-supply = <&bl_reg>;
		enable-gpios = <&pioA 20 GPIO_ACTIVE_HIGH>;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_blon>;
		};

		panel: panel {
		@@ -164,6 +166,12 @@
		(AT91_PINCTRL_OUTPUT \|
		AT91_PINCTRL_OUTPUT_VAL(0))>;
		};

		pinctrl_blon: blon {
		atmel,pins = <AT91_PIOA 20 AT91_PERIPH_GPIO
		(AT91_PINCTRL_OUTPUT \|
		AT91_PINCTRL_OUTPUT_VAL(0))>;
		};
		};
		};

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