Re: [PATCH v5 03/15] iio: adc: ad4134: Apply reset recovery wait time

[Jonathan Cameron]

On Sat, 17 Oct 2026 07:55:13 +0200
Joshua Crofts <joshua.crofts1@xxxxxxxxx> wrote:

> On Fri, 16 Oct 2026 22:57:08 -0300
> Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx> wrote:
> 
> > Add a reset recovery wait time to avoid any SPI transfer from running too
> > soon during device probe.
> > 
> > Fixes: e0bc6d7e2584 ("iio: adc: Initial support for AD4134")
> > Signed-off-by: Marcelo Schmitt <marcelo.schmitt@xxxxxxxxxx>
> > ---
> > New patch in v5.
> > 
> >  drivers/iio/adc/ad4134.c | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/drivers/iio/adc/ad4134.c b/drivers/iio/adc/ad4134.c
> > index 40b27b01f126..d555874b4959 100644
> > --- a/drivers/iio/adc/ad4134.c
> > +++ b/drivers/iio/adc/ad4134.c
> > @@ -442,6 +442,7 @@ static int ad4134_probe(struct spi_device *spi)
> >  		return dev_err_probe(dev, PTR_ERR(rst),
> >  				     "failed to get and deassert reset\n");
> >  
> > +	fsleep(AD4134_RESET_TIME_US);

Sashiko calls out that this is currently 10 seconds, which seems unlikely!

> >  	crc8_populate_msb(ad4134_spi_crc_table, AD4134_SPI_CRC_POLYNOM);
> >  
> >  	st->regmap = devm_regmap_init(dev, NULL, st, &ad4134_regmap_config);  
> 
> Reviewed-by: Joshua Crofts <joshua.crofts1@xxxxxxxxx>
>