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([2a10:a5c0:800d:dd00:8fdf:935a:2c85:d703]) by smtp.gmail.com with ESMTPSA id 38308e7fff4ca-30c3f1c2233sm15370161fa.69.2025.03.17.01.22.12 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 17 Mar 2025 01:22:13 -0700 (PDT) Message-ID: <66a93de8-f5a2-4ffd-9c97-c646934cc90d@gmail.com> Date: Mon, 17 Mar 2025 10:22:11 +0200 Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 03/10] iio: adc: add helpers for parsing ADC nodes To: Jonathan Cameron Cc: Matti Vaittinen , Lars-Peter Clausen , Andy Shevchenko , Lad Prabhakar , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Hugo Villeneuve , Nuno Sa , David Lechner , Javier Carrasco , Guillaume Stols , Dumitru Ceclan , Trevor Gamblin , Matteo Martelli , Alisa-Dariana Roman , Ramona Alexandra Nechita , AngeloGioacchino Del Regno , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev References: <20250316093752.0eacaa16@jic23-huawei> Content-Language: en-US, en-AU, en-GB, en-BW From: Matti Vaittinen In-Reply-To: <20250316093752.0eacaa16@jic23-huawei> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 16/03/2025 11:38, Jonathan Cameron wrote: > On Thu, 13 Mar 2025 09:18:18 +0200 > Matti Vaittinen wrote: > >> There are ADC ICs which may have some of the AIN pins usable for other >> functions. These ICs may have some of the AIN pins wired so that they >> should not be used for ADC. >> >> (Preferred?) way for marking pins which can be used as ADC inputs is to >> add corresponding channels@N nodes in the device tree as described in >> the ADC binding yaml. >> >> Add couple of helper functions which can be used to retrieve the channel >> information from the device node. > I suspect we'll need the addition of an optional trailing timestamp > channel at somepoint. But we can add that when we need it as only > matters for drivers doing iio_push_to_buffers_with_timestamp() This is true. That'll enable using this for devices with buffers - which is not possible right now as most buffer users do timestamps. I'll leave adding the parameter to first buffered user though, but I think it's good to say out loud this is doable :) Thanks! > Otherwise no additional comments from me. Yours, -- Matti