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Tue, 30 Jun 2026 10:23:14 -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, 30 Jun 2026 12:23:07 -0500 Message-Id: Cc: "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" , "David Lechner" , =?utf-8?q?Nuno_S=C3=A1?= , "Andy Shevchenko" , , , Subject: Re: [PATCH v2 5/7] iio: adc: ti-ads1262: Add conversion delay support From: "Kurt Borja" To: "Jonathan Cameron" , "Kurt Borja" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260628-ads126x-v2-0-4b1b231325ba@gmail.com> <20260628-ads126x-v2-5-4b1b231325ba@gmail.com> <20260630015027.3afdfc3a@jic23-huawei> In-Reply-To: <20260630015027.3afdfc3a@jic23-huawei> On Mon Jun 29, 2026 at 7:50 PM -05, Jonathan Cameron wrote: > On Sun, 28 Jun 2026 00:36:06 -0500 > Kurt Borja wrote: > >> Expose the programmable conversion start delay as a per-channel >> IIO_CHAN_INFO_CONVDELAY attribute. > Coversion delay was always a somewhere weird bit of ABI. > What are the delays relative to in this case? > Is this a device that does simultaneous sampling? Pictures > suggest otherwise, and convdelay is currently only defined > in that case. We might be able to extend it but it needs > some thought. The chip has a configurable internal conversion delay to allow for external settling effects. See datasheet section 9.4.3 if you'd like a bit more details. But you're right, I should at least also edit the ABI description of this attribute. We can postpone this discussion for a future series. > > Jonathan --=20 Thanks, ~ Kurt