diff options
| author | Peter Rosin <peda@axentia.se> | 2018-11-20 21:20:43 +0000 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2018-11-21 12:24:50 +0100 |
| commit | d8007306f6ad18f2ba0dcad68ffe9b2fd1d56bfb (patch) | |
| tree | c1069403019c90da5d1ea63fc698d114b85f86ca | |
| parent | 0a4499dfbf8080fcb0a5ead3f3b83d41b8e8ec2d (diff) | |
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>
| -rw-r--r-- | arch/arm/boot/dts/at91-nattis-2-natte-2.dts | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/at91-nattis-2-natte-2.dts b/arch/arm/boot/dts/at91-nattis-2-natte-2.dts index 911d2c7c1500..0f6d335125e2 100644 --- a/arch/arm/boot/dts/at91-nattis-2-natte-2.dts +++ b/arch/arm/boot/dts/at91-nattis-2-natte-2.dts @@ -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))>; + }; }; }; |