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[78.88.45.245]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bd4f4ec000csm693210366b.60.2026.05.19.03.47.34 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 19 May 2026 03:47:36 -0700 (PDT) Message-ID: Date: Tue, 19 May 2026 12:47:33 +0200 Precedence: bulk X-Mailing-List: linux-arm-msm@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: Krzysztof Kozlowski , 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> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260519-first-wine-bulldog-a6a4c7@quoll> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=Rt316imK c=1 sm=1 tr=0 ts=6a0c3fcb cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=FpWmc02/iXfjRdCD7H54yg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=ZX6by8Qv5zPJwBpBueMA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-ORIG-GUID: dP57KtgsfphZki8OMgpp7QKN7KffD0cm X-Proofpoint-GUID: dP57KtgsfphZki8OMgpp7QKN7KffD0cm X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTE5MDEwNiBTYWx0ZWRfX6llR9ktOE9wb Q7xcEfig6ZdddYjJ866gGz0cLsJSos1EaOhPe9+FtD4S15+qcdB19Y3++iv66fsDO569rzVikhY XasLs++L7jT/SfVSYK2gZANa/jqirvnjI3IYdyUgIDami88/Vxp8ak1MXl8TRxJFe+L/G2RWIv/ qQsaB5w4WjuRgCWYD/Osgk8R7r8letMzCOJwqwO/G3PieKIH5iLvoAj2zWhq5UVYg2ADbBw7v1Y slLw3l7yQU1jhCEv+zN93sBIPFG92b0cnjPVAiXzrV4p+KVJYF9q889ffiAUw5QV91TQ/wZ7S9y Cf6X8cC6Os24GJZ/42nh2IsDwxEpePh5QtwqIbrsP4+Snir3nDRe4YJKbHFVQT+6IvmXJF3QZ/n dOk7Mh50N3u5Skmhy4Q9aFvpwlh46BOZ+P2JW+NYdI+dAOpO6MMz07JictgW/5UfEh0JEbMRvFZ GlzlC23lYnP8MLm64fg== X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-19_03,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 phishscore=0 spamscore=0 impostorscore=0 lowpriorityscore=0 clxscore=1015 suspectscore=0 adultscore=0 bulkscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605190106 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) Konrad