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Sun, 09 Aug 2026 01:29:27 -0700 (PDT) Content-Type: text/plain; charset=UTF-8 Date: Sun, 09 Aug 2026 03:29:20 -0500 Message-Id: From: "Kurt Borja" To: "David Lechner" , "Kurt Borja" , "Jonathan Cameron" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Linus Walleij" , "Bartosz Golaszewski" Cc: =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , , , , Subject: Re: [PATCH v3 9/9] iio: adc: ti-ads1262: support common mode supplies Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260807-ads126x-v3-0-f89925d72792@gmail.com> <20260807-ads126x-v3-9-f89925d72792@gmail.com> In-Reply-To: On Sat Aug 8, 2026 at 1:40 PM -05, David Lechner wrote: > On 8/7/26 10:58 PM, Kurt Borja wrote: >> Enable common mode regulators. The usual configuration is to have our >> own 'vbias' regulator connected internally as common mode voltage on the >> AINCOM pin. >>=20 >> Signed-off-by: Kurt Borja >> --- >> drivers/iio/adc/ti-ads1262.c | 25 +++++++++++++++++++++++++ >> 1 file changed, 25 insertions(+) >>=20 >> diff --git a/drivers/iio/adc/ti-ads1262.c b/drivers/iio/adc/ti-ads1262.c >> index 533574169b04..238d803abc50 100644 >> --- a/drivers/iio/adc/ti-ads1262.c >> +++ b/drivers/iio/adc/ti-ads1262.c >> @@ -962,6 +962,27 @@ static irqreturn_t ads1262_irq_handler(int irq, voi= d *dev_id) >> return IRQ_HANDLED; >> } >> =20 >> +static int ads1262_common_mode_setup(struct ads1262 *st) >> +{ >> + struct device *dev =3D &st->spi->dev; >> + char name[sizeof("aincom")]; >> + int ret; >> + >> + for (unsigned int i =3D 0; i <=3D ADS1262_INPMUX_AINCOM; i++) { >> + if (i < ADS1262_INPMUX_AINCOM) >> + scnprintf(name, sizeof(name), "ain%u", i); >> + else >> + scnprintf(name, sizeof(name), "aincom"); >> + >> + ret =3D devm_regulator_get_enable_optional(dev, name); > > We need to get the voltage which is then used to provide an offset > (IIO_CHAN_INFO_OFFSET) for the channel. Sure! I didn't think it was necessary but I can definitely add it. --=20 Thanks, ~ Kurt