git.openwrt.org Git - openwrt/staging/blocktrron.git/blob

   1 From 56a0f05720575f229fbbd996c0798aaf23464924 Mon Sep 17 00:00:00 2001
   2 From: Dave Stevenson <dave.stevenson@raspberrypi.com>
   3 Date: Wed, 8 Sep 2021 15:41:18 +0100
   4 Subject: [PATCH] regulator: rpi-panel: Ensure the backlight is off
   5  during probe.
   6
   7 The initial state of the Atmel is not defined, so ensure the
   8 backlight PWM is set to 0 by default.
   9
  10 Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
  11 ---
  12  drivers/regulator/rpi-panel-attiny-regulator.c | 1 +
  13  1 file changed, 1 insertion(+)
  14
  15 --- a/drivers/regulator/rpi-panel-attiny-regulator.c
  16 +++ b/drivers/regulator/rpi-panel-attiny-regulator.c
  17 @@ -250,6 +250,7 @@ static int attiny_i2c_probe(struct i2c_c
  18
  19         regmap_write(regmap, REG_POWERON, 0);
  20         msleep(30);
  21 +       regmap_write(regmap, REG_PWM, 0);
  22
  23         config.dev = &i2c->dev;
  24         config.regmap = regmap;