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([2600:8803:e7e4:500:6526:8577:6be9:cb7b]) by smtp.gmail.com with ESMTPSA id 586e51a60fabf-4472e79af8fsm6024665fac.0.2026.06.22.13.01.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Jun 2026 13:01:57 -0700 (PDT) Message-ID: Date: Mon, 22 Jun 2026 15:01:57 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC v2 0/3] dt-bindings: iio: adc: Add reference, excitation and burn-out properties To: Kurt Borja , Jonathan Cameron , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260622-new-channel-props-v2-0-aafd5369f253@gmail.com> <42e544b8-f2da-450b-92bb-99c41f1c72fe@baylibre.com> Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 6/22/26 2:58 PM, Kurt Borja wrote: > On Mon Jun 22, 2026 at 2:38 PM -05, David Lechner wrote: >> On 6/22/26 2:30 PM, Kurt Borja wrote: >>> Hi all, >>> >>> After submitting a patch series adding support for TI ADS126X ADCs [1], >>> I was made aware by David [2] that at least two more chip families, >>> ads1220 [3] and ads1x2c14, share very similar features (though these >>> chips are not really compatible between them). After that, I found one >>> more chip with the same features which is already upstream, the >>> AD4170-4. >>> >>> As David explained in [2], these chips are intended to be used with >>> RTDs, thermocouples or other resistive sensors so they share the >>> following per-channel features: >>> >>> - Configurable reference selection >>> - Burn-out Current Sources (BOCS) for diagnostic purpuses >>> - Excitation current sources (usually called IDACs TI) for sensor >>> current biasing >>> >>> Given that these three features are present in all four devices and >>> three of these drivers are still under review, my proposal is to have >>> these features be described in adc.yaml and have this series merged >>> before the three others [1] [2] [3]. >>> >>> This series is sent as RFC because I still don't have much experience >>> with dt-bindings and I don't know if this approach or the properties are >>> general enough to be described like this. >> >> It will probably be easier if I just include these patches when I do >> v2 of my series (if you don't mind me tweaking them a bit). > > Sure, that's fine by me. I'll add a dependency to your series with b4. > > Want me to send one more version addressing your comments before you > take it in? > No need. I don't mind fixing it up.