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| author | George Stark <gnstark@salutedevices.com> | 2023-11-25 23:05:14 +0300 |
|---|---|---|
| committer | Lee Jones <lee@kernel.org> | 2023-12-13 11:28:58 +0000 |
| commit | d883a5ab2f345c2adca781901731795ab94886fb (patch) | |
| tree | 5a5148b736986a33359c37dd373d051f11990c87 /drivers/leds | |
| parent | aa4ed49f42400b503690fd3184d93eee0d765a88 (diff) | |
| download | linux-stable-d883a5ab2f345c2adca781901731795ab94886fb.tar.gz linux-stable-d883a5ab2f345c2adca781901731795ab94886fb.tar.bz2 linux-stable-d883a5ab2f345c2adca781901731795ab94886fb.zip | |
leds: aw200xx: Add delay after software reset
According to the datasheets of AW200xx devices, the software reset takes
at least 1ms. Therefore, it is required to add a delay after the
reset before issuing commands to the device.
Signed-off-by: George Stark <gnstark@salutedevices.com>
Signed-off-by: Dmitry Rokosov <ddrokosov@salutedevices.com>
Link: https://lore.kernel.org/r/20231125200519.1750-7-ddrokosov@salutedevices.com
Signed-off-by: Lee Jones <lee@kernel.org>
Diffstat (limited to 'drivers/leds')
| -rw-r--r-- | drivers/leds/leds-aw200xx.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c index 1756b012a0b7..d4877722eb56 100644 --- a/drivers/leds/leds-aw200xx.c +++ b/drivers/leds/leds-aw200xx.c @@ -321,6 +321,9 @@ static int aw200xx_chip_reset(const struct aw200xx *const chip) if (ret) return ret; + /* According to the datasheet software reset takes at least 1ms */ + fsleep(1000); + regcache_mark_dirty(chip->regmap); return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR); } |