From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 E45C6366054; Thu, 2 Jul 2026 11:48:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782992910; cv=none; b=Xa7G2mJj+kPx4b5r3tprxXgHsxOoS/msGpJhHFsnKxhBvAGZ6ct3p6IU0lwF/D0WdWkyZFWx3FW3Q4AdOPXTLtXJijTSAPzRhJQ+W2sJaD2fMVX7jSrzu/BBd1Mse0IRtl6RFddQzXf6j9cJE4+UYKM4Kq01vp9OwBnbtrvlz2M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782992910; c=relaxed/simple; bh=p22v56AemqjJ0QCpQ1BwH68NPTqShUBeeyh1V6L5+wo=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=f2NEf7DCbRyviNI7VOft1sFExOawfKHbuoP0+J+asooyGiu7CnB3DbY+TzF+PadXUVr89mrzeSJ8y3LY15A9mS6laPEtI6pJ65bBegowIOLxG7Q9QbKzXi61yVL78fqaBYN5cnsgSYyZ2vmF/lmGjscwZX86ojueFLK4B+mgIk8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=duBvPqFD; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="duBvPqFD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DAE8E1F000E9; Thu, 2 Jul 2026 11:48:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782992909; bh=GAfc4SqC69E4ZIzIg2kX2N6xCM1PGgNYZm/ex6Fu2Sw=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=duBvPqFD68SJtuJMHT6xAhWtHQkC+Bww6wCMUyuEVjX0tQCdPYM7f7R/KqVsNuEOa CO8fWm+vDeL0TpkipWlRgu3u2Gq3Rj8tqpX+pGb3PE869TjWY+Ej6eU1pgve+l9rYg +dX6OVZ63GsJSm5AqX0bAfyKSxs6qcL4FAckmb//Dnp87TWvH9YWnMfc5gQY0nooYO jFMwKJIQamDB2Oewz9QGDg2xrjHvaShHvv+AIBxSGWarubFdWfwi6PCWseqX4T2Cm2 YrSxF6cMGlgFW1QCRerJp4Wk9Fe3Y868fS7n8eJuy94vDNTLA62zqPnHRSfD3Jsq3Z Xk8FQf2DbzrZg== Message-ID: <08ef6b3e-be83-4516-954d-dbdb68776df2@kernel.org> Date: Thu, 2 Jul 2026 13:48:22 +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: Rakesh Kota , Konrad Dybcio Cc: Kamal Wadhwa , jishnu.prakash@oss.qualcomm.com, 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 References: <20260518-add_dc_in_support-v1-1-31fbaa329879@oss.qualcomm.com> <20260519082526.odmn5dqi2jftwnln@hu-kotarake-hyd.qualcomm.com> <20260519-first-wine-bulldog-a6a4c7@quoll> <20260521071341.q4efqssppvettaey@hu-kamalw-hyd.qualcomm.com> <86f76a81-832d-4ba5-81d5-38b46b7dc0a7@kernel.org> <6c595a5f-b979-4e8b-ae77-d28d24700588@oss.qualcomm.com> <82019c2e-6b6e-4edd-91b3-a28ef6eb09eb@oss.qualcomm.com> <20260525120139.dyfnm6nwfzuoxd7p@hu-kotarake-hyd.qualcomm.com> <20260702113010.zjrk4kr7fpjp6asj@hu-kotarake-hyd.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 8bit On 02/07/2026 13:30, Rakesh Kota wrote: > On Mon, May 25, 2026 at 05:31:39PM +0530, Rakesh Kota wrote: >> On Fri, May 22, 2026 at 11:24:19AM +0200, Konrad Dybcio wrote: >>> On 5/21/26 11:58 AM, Krzysztof Kozlowski wrote: >>>> On 21/05/2026 10:46, Konrad Dybcio wrote: >>>>> On 5/21/26 9:20 AM, Krzysztof Kozlowski wrote: >>>>>>> Since firmware does not have a way to dynamically tell if it on a >>>>>>> debug-board powered device or a DCIN powered device, We are required to >>>>>>> add this new DT property. >>>>>> >>>>>> Neither debug-board powered device nor battery-less will have >>>>>> monitored-battery, thus again, why lack of that property cannot tell you >>>>>> what you need? >>>>> >>>>> A device with a battery will not have a monitored-battery either >>>> But why? If for such device property "no battery" is suitable, then for >>>> me "monitored-battery" is suitable as well. IOW, if you say that having >>>> a property describing batter is not a accurate hardware property here, >>>> then neither saying "no battery" is, because no batter is basically some >>>> sort of battery (just like empty set is still a set, empty array is >>>> still an array). >>> >>> The battmgr service running on one of the remoteprocs already has all >>> the information about the battery and it also handles all the type-c, >>> PD and charger configuration, only letting the OS know about the >>> results. >>> >>> Hence, unless there's some other hardware at play (e.g. for custom >>> 200 W charging), which wasn't fully implemented in the QC firmware, >>> there is no reason to describe a battery separately, since the OS >>> can't do anything useful with that information >>> >>> In some abstract way, perhaps monitored_battery = <&pmic_glink> could >>> be thought of as valid (since that's the data source the OS gets to >>> see) >> >> Should we use monitored-battery = <&pmic_glink>; If so, would it be >> incorrect to mark pmic_glink as simple-battery, as that may cause the >> schema validation to fail? > > Hi @Konrad Dybcio, @Krzysztof Kozlowski , > > Following up on the earlier discussion — is monitored-battery = > <&pmic_glink>; a valid pattern? And if so, would marking pmic_glink as > simple-battery cause DT schema validation failures? No, pmic is not the monitored batter. Node representing real batter would be, but the main point remains - your firmware abstracts it, so fix the firmware to provide proper abstraction. Best regards, Krzysztof