Commit cf5b1385 authored by Slaveyko Slaveykov's avatar Slaveyko Slaveykov Committed by Jonathan Cameron
Browse files

drivers: iio: temperature: Add delay after the addressed reset command in mlx90632.c 



After an I2C reset command, the mlx90632 needs some time before
responding to other I2C commands. Without that delay, there is a chance
that the I2C command(s) after the reset will not be accepted.

Signed-off-by: default avatarSlaveyko Slaveykov <sis@melexis.com>
Reviewed-by: default avatarAndy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: default avatarCrt Mori <cmo@melexis.com>
Fixes: e02472f7 ("iio:temperature:mlx90632: Adding extended calibration option")
Link: https://lore.kernel.org/r/20201216115720.12404-2-sis@melexis.com


Cc: <Stable@vger.kernel.org>
Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent 7e6d9788

drivers/iio/temperature/mlx90632.c

+6 −0
Original line number Diff line number Diff line
@@ -248,6 +248,12 @@ static int mlx90632_set_meas_type(struct regmap *regmap, u8 type) 
	if (ret < 0)

		return ret;



	/*

	 * Give the mlx90632 some time to reset properly before sending a new I2C command

	 * if this is not done, the following I2C command(s) will not be accepted.

	 */

	usleep_range(150, 200);



	ret = regmap_write_bits(regmap, MLX90632_REG_CONTROL,

				 (MLX90632_CFG_MTYP_MASK | MLX90632_CFG_PWR_MASK),

				 (MLX90632_MTYP_STATUS(type) | MLX90632_PWR_STATUS_HALT));