diff options
| -rw-r--r-- | drivers/iio/dac/ds4424.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/iio/dac/ds4424.c b/drivers/iio/dac/ds4424.c index 3e72a40d053c..f9cdc695032d 100644 --- a/drivers/iio/dac/ds4424.c +++ b/drivers/iio/dac/ds4424.c @@ -12,6 +12,7 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/regulator/consumer.h> +#include <linux/time64.h> #include <linux/iio/driver.h> #include <linux/iio/iio.h> @@ -244,7 +245,13 @@ static int ds4424_probe(struct i2c_client *client) return ret; } - usleep_range(1000, 1200); + /* + * The datasheet does not specify a power-up to I2C ready time. + * Maintain the existing conservative 1ms delay to ensure the + * device is ready for communication. + */ + fsleep(1 * USEC_PER_MSEC); + ret = ds4424_verify_chip(indio_dev); if (ret < 0) goto fail; |