> Hi Sam, we shouldn't be seeing the email header in the patch.
>
> I can tidy that up if you can't fix it though.
> >
> > When a weak pull-up is present on the SDO line, regmap_update_bits
> > fails to write both the SOFTRESET and SDOACTIVE bits because it
> > incorrectly reads them as already set.
> >
> > Since the soft reset disables the SDO line, performing a
> > read-modify-write operation on ADI_SPI_CONFIG_A to enable the SDO line
> > doesn't make sense. This change directly writes to the register
> > instead of using regmap_update_bits.
> >
> Sounds like a fix, so could you send an appropriate Fixes tag in a v2 and/or a reply to this email.
Added the fixes tag and submitted as patch v2. Please let me know if there is anything else that is needed.
Thanks.
>
> > Signed-off-by: Sam Winchenbach <swinchenbach@xxxxxxxx>
> > ---
> > drivers/iio/filter/admv8818.c | 14 ++++----------
> > 1 file changed, 4 insertions(+), 10 deletions(-)
> >
> > diff --git a/drivers/iio/filter/admv8818.c
> > b/drivers/iio/filter/admv8818.c index 195e58bc4..9cd1eee84 100644
> > --- a/drivers/iio/filter/admv8818.c
> > +++ b/drivers/iio/filter/admv8818.c
> > @@ -577,21 +577,15 @@ static int admv8818_init(struct admv8818_state *st)
> > struct spi_device *spi = st->spi;
> > unsigned int chip_id;
> >
> > - ret = regmap_update_bits(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
> > - ADMV8818_SOFTRESET_N_MSK |
> > - ADMV8818_SOFTRESET_MSK,
> > - FIELD_PREP(ADMV8818_SOFTRESET_N_MSK, 1) |
> > - FIELD_PREP(ADMV8818_SOFTRESET_MSK, 1));
> > + ret = regmap_write(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
> > + ADMV8818_SOFTRESET_N_MSK |
> > + ADMV8818_SOFTRESET_MSK);
> > if (ret) {
> > dev_err(&spi->dev, "ADMV8818 Soft Reset failed.\n");
> > return ret;
> > }
> >
> > - ret = regmap_update_bits(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
> > - ADMV8818_SDOACTIVE_N_MSK |
> > - ADMV8818_SDOACTIVE_MSK,
> > - FIELD_PREP(ADMV8818_SDOACTIVE_N_MSK, 1) |
> > - FIELD_PREP(ADMV8818_SDOACTIVE_MSK, 1));
> > + ret = regmap_write(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
> > + ADMV8818_SDOACTIVE_N_MSK |
> > + ADMV8818_SDOACTIVE_MSK);
> > if (ret) {
> > dev_err(&spi->dev, "ADMV8818 SDO Enable failed.\n");
> > return ret;
