Re: [PATCH 3/5] iio: adc: ad7606: Allow reconfigration after reset

[Jonathan Cameron <jic23@kernel.org>]

On Thu, 18 Jul 2019 09:27:32 +0300
Beniamin Bia <beniamin.bia@analog.com> wrote:

> According to datasheet, ad7616 require at least 15ms after a restart
> to fully reconfigure and being able to receive new commands via spi.
> 
> Signed-off-by: Beniamin Bia <beniamin.bia@analog.com>
> Acked-by: Jonathan Cameron <jic23@kernel.org>
Applied.

Thanks,

J

> ---
> Changes in v2:
> -nothing changed
> 
>  drivers/iio/adc/ad7606.c | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
> index 9eec3db01a17..a6034cf7238a 100644
> --- a/drivers/iio/adc/ad7606.c
> +++ b/drivers/iio/adc/ad7606.c
> @@ -594,6 +594,10 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
>  	if (ret)
>  		dev_warn(st->dev, "failed to RESET: no RESET GPIO specified\n");
>  
> +	/* AD7616 requires al least 15ms to reconfigure after a reset */
> +	if (msleep_interruptible(15))
> +		return -ERESTARTSYS;
> +
>  	st->write_scale = ad7606_write_scale_hw;
>  	st->write_os = ad7606_write_os_hw;
>