Re: [PATCH v4 3/8] iio: adc: max1027: Reset the device at probe time

Jonathan Cameron
2019-10-12T11:34:29Z

On Fri, 11 Oct 2019 16:43:42 +0200
Miquel Raynal <miquel.raynal@bootlin.com> wrote:

> All the registers are configured by the driver, let's reset the chip
> at probe time, avoiding any conflict with a possible earlier
> configuration.
>
> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Applied.

Thanks,

Jonathan

> ---
> drivers/iio/adc/max1027.c | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
> index 823223b77a70..f9b473ee6711 100644
> --- a/drivers/iio/adc/max1027.c
> +++ b/drivers/iio/adc/max1027.c
> @@ -466,6 +466,14 @@ static int max1027_probe(struct spi_device *spi)
> }
> }
>
> + /* Internal reset */
> + st->reg = MAX1027_RST_REG;
> + ret = spi_write(st->spi, &st->reg, 1);
> + if (ret < 0) {
> + dev_err(&indio_dev->dev, "Failed to reset the ADC\n");
> + return ret;
> + }
> +
> /* Disable averaging */
> st->reg = MAX1027_AVG_REG;
> ret = spi_write(st->spi, &st->reg, 1);