RE: [PATCH v2] iio: adis: set GPIO reset pin direction

["Sa, Nuno" <Nuno.Sa@analog.com>]

> -----Original Message-----
> From: Antti Keränen <detegr@rbx.email>
> Sent: Thursday, July 8, 2021 11:54 AM
> To: linux-iio@vger.kernel.org
> Cc: Antti Keränen <detegr@rbx.email>; Hannu Hartikainen
> <hannu@hrtk.in>; Lars-Peter Clausen <lars@metafoo.de>; Hennerich,
> Michael <Michael.Hennerich@analog.com>; Sa, Nuno
> <Nuno.Sa@analog.com>; Jonathan Cameron <jic23@kernel.org>;
> open list <linux-kernel@vger.kernel.org>
> Subject: [PATCH v2] iio: adis: set GPIO reset pin direction
> 
> Set reset pin direction to output as the reset pin needs to be an active
> low output pin.
> 
> Co-developed-by: Hannu Hartikainen <hannu@hrtk.in>
> Signed-off-by: Hannu Hartikainen <hannu@hrtk.in>
> Signed-off-by: Antti Keränen <detegr@rbx.email>
> ---
> Removed unnecessary toggling of the pin as requested by Lars-Peter. I
> missed out on the conversation, but I agree this is better.
> 
>  drivers/iio/imu/adis.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
> index 319b64b2fd88..f8b7837d8b8f 100644
> --- a/drivers/iio/imu/adis.c
> +++ b/drivers/iio/imu/adis.c
> @@ -415,12 +415,11 @@ int __adis_initial_startup(struct adis *adis)
>  	int ret;
> 
>  	/* check if the device has rst pin low */
> -	gpio = devm_gpiod_get_optional(&adis->spi->dev, "reset",
> GPIOD_ASIS);
> +	gpio = devm_gpiod_get_optional(&adis->spi->dev, "reset",
> GPIOD_OUT_HIGH);
>  	if (IS_ERR(gpio))
>  		return PTR_ERR(gpio);
> 
>  	if (gpio) {
> -		gpiod_set_value_cansleep(gpio, 1);
>  		msleep(10);
>  		/* bring device out of reset */
>  		gpiod_set_value_cansleep(gpio, 0);
> --

Reviewed-by: Nuno Sá <nuno.sa@analog.com> 


Thanks!

- Nuno Sá