Re: [PATCH v3 1/9] dt-bindings: iio: adc: support the TI ADS126x ADC family

["Kurt Borja" <kuurtb@gmail.com>]

On Mon Aug 10, 2026 at 3:46 AM -05, Bartosz Golaszewski wrote:
> On Sat, 8 Aug 2026 05:58:23 +0200, Kurt Borja <kuurtb@gmail.com> said:
>> The ADS1262 and ADS1263 are 32-bit, 38.4-kSPS delta-sigma ADCs with an
>> integrated PGA, internal reference, excitation and burn-out current
>> sources for sensor biasing and diagnostics. The ADS1263 adds a second,
>> 24-bit delta-sigma ADC (ADC2) for background measurements.
>>
>> Each can configure its own voltage reference source, the two excitation
>> current sources (IDAC), plus input and excitation channels rotation for
>> offset and IDAC mismatch cancellation. This lets the device drive and
>> ratiometrically measure RTDs and other resistive sensors.
>>
>> Signed-off-by: Kurt Borja <kuurtb@gmail.com>
>> ---
>
> ...
>
>> +
>> +  '#gpio-cells':
>> +    const: 2
>> +
>> +  gpio-controller: true
>> +
>
> Where is the gpio-controller functionality in this series? I don't see the
> driver providing any GPIO chip.
>
> Bart

Hi Bart,

The chip does have GPIO controller capabilities that are not yet
implemented in the driver. I'll go for it after this series. I don't
know why b4's --auto-to-cc is picking up the GPIO list. I'll drop it
until I actually implement the feature.

This chip is compatible with gpio_regmap but it would need (*request)
and (*free) callbacks for it to work properly, as this chip doesn't have
pinctrl. My plan was to extend these callbacks to gpio_regmap_config.
What do you think of this?

-- 
Thanks,
 ~ Kurt