[PATCH v1 07/11] leds: aw200xx: add delay after software reset

From: Dmitry Rokosov
Date: Fri Oct 06 2023 - 12:05:20 EST


From: George Stark <gnstark@xxxxxxxxxxxxxxxxx>

According to datasheets of aw200xx devices software reset takes at
least 1 ms so add delay after reset before issuing commands to device.

Signed-off-by: George Stark <gnstark@xxxxxxxxxxxxxxxxx>
Signed-off-by: Dmitry Rokosov <ddrokosov@xxxxxxxxxxxxxxxxx>
---
drivers/leds/leds-aw200xx.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c
index 5b6907eb6299..a1ef0b0a62fc 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 datasheet software reset takes at least 1ms */
+ usleep_range(1000, 2000);
+
regcache_mark_dirty(chip->regmap);
return regmap_write(chip->regmap, AW200XX_REG_FCD, AW200XX_FCD_CLEAR);
}
--
2.36.0