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 <[email protected]>
Signed-off-by: Dmitry Rokosov <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: geo-stark

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);
 }