From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DEE6D32B139; Tue, 19 May 2026 10:49:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779187767; cv=none; b=fNW6+kdia2EFNIJhSC5lCFzaq040MId1c0tB5OusJsK9Ar74oxtoj/bQnZ7bHjBkXvpDV2Mng+elJVBXTzPcN1S9qOAqLtcjfD2+YkgReQ05U1473NG8HTCKYZ98QmFDP9PUCtqFkz7BUjKSwA7KtU9PuFq5dj/YfgFBjwVa99g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779187767; c=relaxed/simple; bh=wZv6gplc2qVX06ILrybYyEpnPth2NWx47dgHVn4qhiY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hb3WqeZ2uXE05/HhaSLTMt6tmFRqqrKaTmQ3xDxngWMGrdKsLma31Tz7YDrr7fSSnalk5oW7AqrUllmTx+YGHmbrTM+mpMx/h2eqxy3RShzRLPFFJAzEAULleCzAISEgHTzUYer2FDC0b03JArcJkMmq+gHpZzpdlwBGl1F5VT8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=un5SayZX; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="un5SayZX" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84531C2BCB3; Tue, 19 May 2026 10:49:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779187766; bh=wZv6gplc2qVX06ILrybYyEpnPth2NWx47dgHVn4qhiY=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=un5SayZXfaykg3e2JzexiAFygxvT1/PzbC+rx/KWvi7g+pvC6uw3i+VUCHvHDhcLi 6ByoepCpdvmMUrS3qm/5dGxFxfTkR0wwLSWmq9MGrrphtekbkJwl2FoeToGmxHL1Xl QVPtOH6ZsSpMdnJ38z0W7Grq6HJdTIzlpGiNAHELfKzsc4+PhXonwV9qwImOyT/DXm WEUBJiPsuKi4kKdyA24LC41RLORfttBO+SwTBUpzNNvB8UqmGkjua5Y8Zv9Ena4S/1 MsD7EUM3KeAlHdXvXIq99owYcc62UqxDaVbSJzA4gEImqkC0QJEluRfF+VnZyym/Ep lmYPwWpWLuFHg== Message-ID: <832d31a1-60fc-4af1-aa8e-8b417fce206c@kernel.org> Date: Tue, 19 May 2026 12:49:21 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] dt-bindings: soc: qcom: pmic-glink: Document batteryless property To: Konrad Dybcio , Rakesh Kota Cc: Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sebastian Reichel , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, jishnu.prakash@oss.qualcomm.com, kamal.wadhwa@oss.qualcomm.com References: <20260518-add_dc_in_support-v1-0-31fbaa329879@oss.qualcomm.com> <20260518-add_dc_in_support-v1-1-31fbaa329879@oss.qualcomm.com> <20260519082526.odmn5dqi2jftwnln@hu-kotarake-hyd.qualcomm.com> <20260519-first-wine-bulldog-a6a4c7@quoll> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 19/05/2026 12:47, Konrad Dybcio wrote: > On 5/19/26 12:35 PM, Krzysztof Kozlowski wrote: >> On Tue, May 19, 2026 at 01:55:26PM +0530, Rakesh Kota wrote: >>> >>>> And isn't lack of monitored battery property enough to indicate that? >>> >>> Regarding monitored-battery — its absence alone isn't sufficient. The >>> BATT_ID line on debug boards is pulled to ~10kΩ, which is used during >>> development phase where some battery properties are still present. The >>> same ~10kΩ value is also used on some genuinely battery-less production >>> platforms where no battery properties exist, making auto-detection >>> unreliable. Hence the need for an explicit DT property to identify >>> hardware platforms where no battery populated. >> >> I don't understand this logic. So you claim you have debug boards which >> do not have battery, but define monitored-battery? Then these are wrong >> and fix them first. > > I don't think any pmic-glink device defines a monitored-battery node > > The firmware is in full control of the battery charger (maybe with the > exception of some coordination with ECs on some laptops and maybe if > the vendor has some very in-depth custom charging hw, but that's > educated guesses) If you are saying that monitored-battery is not applicable here, then it feels like "battery-less" is not applicable as well. Best regards, Krzysztof