Messages in this thread Patch in this message | | | From | Dmitry Rokosov <> | Subject | [PATCH v5 06/11] leds: aw200xx: add delay after software reset | Date | Sat, 25 Nov 2023 23:05:14 +0300 |
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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 --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); } -- 2.36.0
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