Unverified Commit ddaa9bea authored by Lucas Tanure's avatar Lucas Tanure Committed by Mark Brown
Browse files

ASoC: cs42l42: Always wait at least 3ms after reset 



This delay is part of the power-up sequence defined in the datasheet.
A runtime_resume is a power-up so must also include the delay.

Signed-off-by: default avatarLucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210305173442.195740-6-tanureal@opensource.cirrus.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 9ad4f9ea

sound/soc/codecs/cs42l42.c

+2 −1
Original line number Diff line number Diff line
@@ -1756,7 +1756,7 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, 
		dev_dbg(&i2c_client->dev, "Found reset GPIO\n");

		gpiod_set_value_cansleep(cs42l42->reset_gpio, 1);

	}

	mdelay(3);

	usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);



	/* Request IRQ */

	ret = devm_request_threaded_irq(&i2c_client->dev,
@@ -1881,6 +1881,7 @@ static int cs42l42_runtime_resume(struct device *dev) 
	}



	gpiod_set_value_cansleep(cs42l42->reset_gpio, 1);

	usleep_range(CS42L42_BOOT_TIME_US, CS42L42_BOOT_TIME_US * 2);



	regcache_cache_only(cs42l42->regmap, false);

	regcache_sync(cs42l42->regmap);

sound/soc/codecs/cs42l42.h

+1 −0
Original line number Diff line number Diff line
@@ -740,6 +740,7 @@ 
#define CS42L42_FRAC2_VAL(val)	(((val) & 0xff0000) >> 16)



#define CS42L42_NUM_SUPPLIES	5

#define CS42L42_BOOT_TIME_US	3000



static const char *const cs42l42_supply_names[CS42L42_NUM_SUPPLIES] = {

	"VA",