From 89339a2ae7608138dbcccda8db67a87870550cbe Mon Sep 17 00:00:00 2001 From: Dave Stevenson Date: Mon, 24 Jan 2022 17:01:24 -0500 Subject: [PATCH] regulator: rpi-panel: Ensure the backlight is off during probe. The initial state of the Atmel is not defined, so ensure the backlight PWM is set to 0 by default. Signed-off-by: Dave Stevenson Signed-off-by: Detlev Casanova Link: https://lore.kernel.org/r/20220124220129.158891-5-detlev.casanova@collabora.com Signed-off-by: Mark Brown --- drivers/regulator/rpi-panel-attiny-regulator.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c index a4af7adad2b5..b3629a1e0e50 100644 --- a/drivers/regulator/rpi-panel-attiny-regulator.c +++ b/drivers/regulator/rpi-panel-attiny-regulator.c @@ -250,6 +250,7 @@ static int attiny_i2c_probe(struct i2c_client *i2c, regmap_write(regmap, REG_POWERON, 0); msleep(30); + regmap_write(regmap, REG_PWM, 0); config.dev = &i2c->dev; config.regmap = regmap;