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Tue, 11 Aug 2026 14:29:56 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 Date: Tue, 11 Aug 2026 16:29:53 -0500 Message-Id: Subject: Re: [PATCH v3 1/9] dt-bindings: iio: adc: support the TI ADS126x ADC family From: "Kurt Borja" To: "Bartosz Golaszewski" , "Kurt Borja" Cc: =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , , , , , "Jonathan Cameron" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "Linus Walleij" , "David Lechner" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260807-ads126x-v3-0-f89925d72792@gmail.com> <20260807-ads126x-v3-1-f89925d72792@gmail.com> In-Reply-To: On Mon Aug 10, 2026 at 3:46 AM -05, Bartosz Golaszewski wrote: > On Sat, 8 Aug 2026 05:58:23 +0200, Kurt Borja 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 >> --- > > ... > >> + >> + '#gpio-cells': >> + const: 2 >> + >> + gpio-controller: true >> + > > Where is the gpio-controller functionality in this series? I don't see th= e > 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? --=20 Thanks, ~ Kurt