From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f43.google.com (mail-ot1-f43.google.com [209.85.210.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 90DD03101C7 for ; Mon, 15 Dec 2025 15:58:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.43 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765814320; cv=none; b=m8aSf2asNzgbCMYWk8k3jq2ynGYiqciRnX11/gSZDi+al7BZZD5tBwpO4c9Ecb7d7YfOpw+pBJn8y06ufnMXOVcPTMaK2hEIt4MOHHjp35NUqPCCXCHRntYw8v7FyqaVbiA+98kJFPYEY51CmH/NDJb3Y5O2JrZc4fTkDzOQZjU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765814320; c=relaxed/simple; bh=eRv7AfNkcTJVknA4Das5S0e6Q7KjBZJ1udFtKIBB6d0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=K8sxzA2wMaEg1vV9XXKXOaejm3KmJMZBbVxpeQ8/lsBT9WZa44xtaaaqXQquxCy/ULkcDUIdcBGlVp1fg1LvDvqh5LkNy3oWlxKaHRNI9mzSN+sKvYBa1agUSJV525Js6M7722zsUifGifHW3LJvlZO0aNPlHDUUtABWkuxqxFg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b=g4aS1b0M; arc=none smtp.client-ip=209.85.210.43 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre-com.20230601.gappssmtp.com header.i=@baylibre-com.20230601.gappssmtp.com header.b="g4aS1b0M" Received: by mail-ot1-f43.google.com with SMTP id 46e09a7af769-7c6e815310aso2703130a34.0 for ; Mon, 15 Dec 2025 07:58:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20230601.gappssmtp.com; s=20230601; t=1765814318; x=1766419118; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=FAg1Z81+fT0z4IQz8r+6XMjGkoDKjdatvxs7gjb/AyE=; b=g4aS1b0MfzxkEphC3luwnUZQ8geoJEq1q9F9xEz8iuIGI+Ao4Qve/zhCdxWBaQ/NbS hqtwMoiltyGOoofsoed0WPjoxlpawHUyQxT7urm0EE+CYvH6SULLic55fCfEYSW7daGV O8g5FsS1oLuJKx234L/lBl40CxmY/hkT2oNBI+D5PqMJyEP78zuk5zJt1J1ZpQYJ5lKM WxcWBOSYAjhDTGHTbSCgq9Sc+dFBBKF/hIi4ejc2mhiES1lBlJvkqCXgsI7vHgMaBm38 iXR9PnS+DC9z4C6AtgRKH3R1MrJ/iLcntEfocOGSri8G20pnPtdJEhuAuqN7J/cIh4b2 m5jw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1765814318; x=1766419118; h=content-transfer-encoding:in-reply-to:from:content-language :references:cc:to:subject:user-agent:mime-version:date:message-id :x-gm-gg:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=FAg1Z81+fT0z4IQz8r+6XMjGkoDKjdatvxs7gjb/AyE=; b=G+hev8oZijTgLdWoAqXAu64C9wKEIT2YZZQ9GAgFnRdYMdS8vUUd+sKSH80UuK8BkL OYdVPLClF2+cRzvmyuWQOI6LNCvnFour+Xcnb00WCURO14NrMGxMMu6towCUP2WUBg+e MNB+d0Rz2s/CXXtrE3qhl4zbOlNtn3twFdctoMaAhcGLI+Z9rK7gjKYFrXQi8j0FOfwa eGgJ2P0mnu63/McTxLDg3oYt8kHrkYZgipGXYmoq+Jh3IyBoiZIMAFZixvLfbTfoeOC2 cRcafG6nvoEewKbgibWVkzEhLc8VVDXg1d9El9rGgF7yuToFNuMninuGyAMAusZyXXHj E9YQ== X-Forwarded-Encrypted: i=1; AJvYcCXWQo45Dyfc+xN8RpmID9ijBb9AYMrW5cVNnmRDcguezcB31Sxrcs7raox/Qmc+Q1dH9HhxTDrNQyYuNiI=@vger.kernel.org X-Gm-Message-State: AOJu0YyYve0xfIaXsDuo1714WxyYDYC4gonD2pSf13+CLWy887b84Hf7 TP33wKo6ENfB3XIEzW3Tv5OssDQtda9OLHQ+Cu/I62+Ipg/lBKvZVJsWvph2KtXNays= X-Gm-Gg: AY/fxX7FcGVsrt9ktZMalWLHJDj098TMFowL6aPHXIJkC7CnWdy5ufRLvxgX89gnZCc bAptgELJXi/2tiqXp1ZHjGsKPgwjNz2zjVXOqY7Z0269uIb0ISP6eW6XXepScb1qhv5VuviN/xL GoZs+9zjRbR2i7JIYj+x8AD/foeIJ1B4CfkQ1l/z48YyYPY4+XFfmy5L5HJdi0aRpqhEE2wOvUp eKBUVWeoPsfLd7dqfnBOC37TI/aD8mf7ZyK3c/UEBj7uM3ALWyBAvQpf3jyqQjFCorIO2iHRAt1 572OLZAkCJCp2FcgCIWD6ma1q0z+exEGDqqVvKrRNRt6VXZRChqscDBU6+SpybVhgsrFzFHORql 8cURG8Htld+ZHLCXoCdgehNk4/KkxCiQIx2kTTMoXoKcG6LILJXJsV47v0bPDH9HqRrxX6C6d4j 6twQ35RckO5Om5z3yl7zkr1qxT+0K0EQUee4kohMB7rO7c1ziUDvDOhOF/cIzpQhuteHgVmMU= X-Google-Smtp-Source: AGHT+IErjR8OzAEn6sK+72q9AhulVm00s3z7ntoS+Df2bMmfuqscJ9cXWsujF6in7Q1hr5h3VM3W0g== X-Received: by 2002:a05:6830:67ff:b0:7c7:6219:6852 with SMTP id 46e09a7af769-7cae8381a11mr5824150a34.28.1765814317789; Mon, 15 Dec 2025 07:58:37 -0800 (PST) Received: from ?IPV6:2600:8803:e7e4:500:1635:b560:bfdd:f758? ([2600:8803:e7e4:500:1635:b560:bfdd:f758]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7cadb1ff4desm10030529a34.7.2025.12.15.07.58.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 15 Dec 2025 07:58:37 -0800 (PST) Message-ID: <8ef3fbd1-b746-4379-b615-e3034ec8f39e@baylibre.com> Date: Mon, 15 Dec 2025 09:58:36 -0600 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 v2 1/2] dt-bindings: iio: adc: Add TI ADS1120 binding To: Ajith Anandhan , Jonathan Cameron Cc: nuno.sa@analog.com, andy@kernel.org, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20251109141119.561756-1-ajithanandhan0406@gmail.com> <20251109141119.561756-2-ajithanandhan0406@gmail.com> <20251115183144.15b3e236@jic23-huawei> <5cb6243e-f47b-48dc-9f43-299cde632e08@baylibre.com> Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 12/15/25 8:49 AM, Ajith Anandhan wrote: > On 11/18/25 5:49 AM, David Lechner wrote: >> On 11/15/25 12:31 PM, Jonathan Cameron wrote: >>> On Sun,  9 Nov 2025 19:41:18 +0530 >>> Ajith Anandhan wrote: >>> ... >>>> + >>>> +  ti,avdd-is-ref: >>>> +    type: boolean >>>> +    description: | >>>> +      If present, indicates that the AVDD supply voltage is of sufficient >>>> +      quality and stability to be used as the voltage reference instead of >>>> +      the internal reference. This allows the driver to select AVDD as the >>>> +      reference source for potentially better performance. >>> This one is interesting as I don't recall anyone arguing this made >>> sense before.  In what way better performance?  Are their boards out >>> there where this definitely makes sense to do? >>> >> Seems harmless to have the property even if no one ever uses it. But I would >> be curious to know the answers to those questions too. > > > I included this property based on the datasheet mentioning AVDD as a possible reference source, butit doesn't claim this provides better performance, and I don't currently have a specific use case or hardware design that requires it. > > How to proceed ? Need your valuable suggestions. > > > BR, > > Ajith. > >> > It sounds like it is unlikely to be used in practice, so I won't object if you want to drop it to keep things simple.