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regulator: rpi-panel: Ensure the backlight is off during probe.
authorDave Stevenson <dave.stevenson@raspberrypi.com>
Wed, 8 Sep 2021 14:41:18 +0000 (15:41 +0100)
committerPhil Elwell <8911409+pelwell@users.noreply.github.com>
Tue, 14 Sep 2021 12:04:20 +0000 (13:04 +0100)
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 <dave.stevenson@raspberrypi.com>
drivers/regulator/rpi-panel-attiny-regulator.c patch | blob | history

diff --git a/drivers/regulator/rpi-panel-attiny-regulator.c b/drivers/regulator/rpi-panel-attiny-regulator.c
index a4af7adad2b5e08c709e8ecdc3029715230a303b..b3629a1e0e502fbd7a32f8b310463681e3d55fb6 100644 (file)
--- 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;
Domain: System / Kernel;