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Mon, 02 Nov 2026 08:37:04 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=aruba.it; s=a1; t=1793605024; bh=saVY7wfWjYqhW6bPBGHo/DEe3cjEs9f8BoRfe+c4DAs=; h=Date:MIME-Version:Subject:To:From:Content-Type; b=AnylbI18PEyfQBh1G4nG42CzN5Q/eHvSIDHP7sHKmuTf08UtHGv3O5/RZp1fEsQYb wircYXtMCJpIUlOPBRYinkZD6HbriBpDahkM1PxB1PC/zspqI+egxAnKUqZcbyzN10 LkGOfz30VcoxtKHSUmsmCQitIDZvmNCtJujmpL6MYSt6I/LjxbZHWWAW/FpKKx0HdF DXa9i46c4WwU4UB4FeksFNyzw5X5+MWIOp5MCurihv2xBLrLyjC11TwrECQGkus/vV iFW3HClAt847UU19NvmIEqawCyAfEef6iYM585aGKhuTQDj9P8pmgKoDUmTZXrULEi xeiUsQ5UWN8vw== Message-ID: Date: Mon, 2 Nov 2026 08:37:02 +0100 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 2/2] iio: adc: add driver for Texas Instruments TLA2528 adc Content-Language: en-US, it, it-IT To: Jonathan Cameron , Maxime Chevallier Cc: David Lechner , =?UTF-8?Q?Nuno_S=C3=A1?= , Andy Shevchenko , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matti Vaittinen , Marcelo Schmitt , Antoniu Miclaus , Angelo Dureghello , Tobias Sperling , Eason Yang , Marilene Andrade Garcia , Cosmin Tanislav , duje@dujemihanovic.xyz, herve.codina@bootlin.com, thomas.petazzoni@bootlin.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261030164705.297354-1-maxime.chevallier@bootlin.com> <20261030164705.297354-3-maxime.chevallier@bootlin.com> <20261031234848.00248ddd@jic23-hlaptop> From: Rodolfo Giometti In-Reply-To: <20261031234848.00248ddd@jic23-hlaptop> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-CMAE-Envelope: MS4xfCHbwW499DCRrn78XsmTi21/wd2BGqm+Vq/lCd1YFZH1tK5d4fTKjVrtFW3ZyX7hk379owkLKK5isgmB0qKkuQoJUJz6A28x5gAWarp02MF9HOq67B/B cJWCdwmcOx7R8yjFFM8bOdOK5lx3rV/4PqeOtkiUTOsAndhMcFJgnmB3nbZkoVUyNIlW7TXJ7wns4yyB2gT3jbvKLh//5CXWftv1URmlv7KQ+rXOesAECWEp /D4UgiOwZ2Z+kKSdaeAyahsuTuS8buL5rahbE1JGTFsriUjbfcZ+FchfmtXX3osll8QlXCwEQAyGQvFl9bSV2uaebWpIvyRRKqMYNdIQY6tUucQpz2IQ/OI0 k0RF8slHcQGA/UtinpVVb5bBCf2rd5zWfI4DNS20pWkWl0JSQUsiTZ+3wdVmqjD5juD+jVJ1Ca81gu4GMANeq1NJJwXU5rpR1C4s3tG/bbzTzdODET+G7v64 GKGMgNFLdTJ3bcMQB5nRm0Eak+6I5uoDR1GfJKQ/6Xudmz4UHC6LtuXs8HWxKdSnmrHTJfjzJGozJt6HmqFvf5OTVHA2lY2iuVIH2/UgpLoRdBSOQ0zHoF4Q PSKdWeh6/y848DaleDR5H911o5ssviYVgmW83cE6oOljoUNTMvUT8nN9RZPBRRg+dkqcWRe+QA6v38Cv/9LfdchtqAoALMjLMinVZvbloYHH29FAlz8WR0h6 dmEMPpd59qvOJQ54UDezUUJQN2gpsdhHaboUVMOFP7MKfaKfN703o7OMAlWWVSbnNWMT5Oj9QtrAGKztbK3jBSrJswxBKLljDNV1ZSKPAosDJM3s9b9/Pi4E +5lRJd32LERW+y0ZT6Y8Wv1gYrIbDV5zZt+XOaJQFL3Z0YPk8rVyuLXTAkMAQMlfVyoC+KaUx4Aa/pQNbAs8EMKkyk+YiQ3Jo8L2Hsn1ki39xBh86tVL1XBG 6zLrxlmikdrTUeabnbr5QgXo5SU= On 01/11/2026 00:48, Jonathan Cameron wrote: > I'd also like to avoid propagating the fallback to all channels > if none are specified. In this particular case it is problematic > because if you add the GPIO mode, for chips like this, we tend > to expose all pins that aren't in use for anything else as GPIOs. > With the fallback scheme you have no way to tell if you want all > pins as GPIOs. Agreed. With only 8 pins, listing the channels explicitly in the DT costs little, and it keeps the door open for the GPIO support. Maxime, if you drop the fallback, I think the commit message of patch 1/2 should lose its last sentence too ("If no ADC chan description is represented, all channels will be exposed as analog inputs."), since it would no longer describe what the driver does. Thanks, Rodolfo -- GNU/Linux Solutions e-mail: giometti@enneenne.com Linux Device Driver giometti@linux.it Embedded Systems phone: +39 349 2432127 UNIX programming