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    Subject[PATCH v3 05/15] ASoC: cs42l42: Always wait at least 3ms after reset
    Date
    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: Lucas Tanure <tanureal@opensource.cirrus.com>
    ---
    Changes in v3:
    - No changes

    Changes in v2:
    - No changes

    sound/soc/codecs/cs42l42.c | 3 ++-
    sound/soc/codecs/cs42l42.h | 1 +
    2 files changed, 3 insertions(+), 1 deletion(-)

    diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
    index eee3fc3200308..811b7b1c9732e 100644
    --- a/sound/soc/codecs/cs42l42.c
    +++ b/sound/soc/codecs/cs42l42.c
    @@ -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);
    diff --git a/sound/soc/codecs/cs42l42.h b/sound/soc/codecs/cs42l42.h
    index 9b017b76828a4..866d7c873e3c9 100644
    --- a/sound/soc/codecs/cs42l42.h
    +++ b/sound/soc/codecs/cs42l42.h
    @@ -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",
    --
    2.30.1
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