diff mbox series

[v5,06/11] leds: aw200xx: add delay after software reset

Message ID 20231125200519.1750-7-ddrokosov@salutedevices.com
State New
Headers show
Series leds: aw200xx: several driver updates | expand

Commit Message

Dmitry Rokosov Nov. 25, 2023, 8:05 p.m. UTC 
From: George Stark <gnstark@salutedevices.com>

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>
---
 drivers/leds/leds-aw200xx.c | 3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

diff --git a/drivers/leds/leds-aw200xx.c b/drivers/leds/leds-aw200xx.c
index 91ba580edf87..12c4251211dd 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);
 }