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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-GUID: aCFnh0eC0LfHHMFTrWwMuksGw2UuMoIy X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODI4MDA4NiBTYWx0ZWRfX/TWDPimPTTuF pLA4wWrQcV/wg/M9j61uYqltD3EXQO0V5PB2szQlKCFWY3AxFBODFhYWNums6ZUj2m/GDC3Gwfh vE7wJwqmqqEnp2tdlA6fNxcSbYvi2tYNZyt4GsOhXtTmWsMxCqGEEs09ybqkek8ZRBuMLd0aPog LixYaGOzIaS4IefFJ30mF0JiF+GQoBW9zXYyQPfhKFuk+QHFc4wVlihN0AJKdWlxB65zLWUkE0S 6zwN1lBLzWkpp40g7t+UZGGibONXMGdZXt1HJKF7B7hNQDAcZJ/QU25Bg8Wg/J9IlIEDhd+rni3 9BngHffi5p1w8LrJD4ImWjtcXgXMwDK6Zag1bJMBWa653oaqHuyFmc+YNFCaNOyCdd4pYOGCnwV oUfQvamHguHK3dmUZ2crCFzAH6wDYperY54VsTLlD4trzUdDtkP7a4i6FyvtN1xwc1I1+LMDLDz qHrmUFtJS4kdceV9hRA== X-Proofpoint-ORIG-GUID: aCFnh0eC0LfHHMFTrWwMuksGw2UuMoIy X-Proofpoint-Spam-Info: AW1haW4tMjYwODI4MDA4NiBTYWx0ZWRfX4WqUhWt1YAjz fG/fAdTMCZifMB8F98JbLq9KNxnfwG6tnP1l9l9xyxtAuu5DnpKSrDL2JqOm3A42uMJJo9f62RK i/gzWCoPH5FSszvLG1rYvk3Pr4l6jco= X-Authority-Analysis: v=2.4 cv=RoP16imK c=1 sm=1 tr=0 ts=6a915d7c cx=c_pps a=JbAStetqSzwMeJznSMzCyw==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=p0WdMEafAAAA:8 a=G7tyanHNxTnsMBuu9n8A:9 a=QEXdDO2ut3YA:10 a=uxP6HrT_eTzRwkO_Te1X:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-28_02,2026-08-27_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 adultscore=0 phishscore=0 suspectscore=0 impostorscore=0 malwarescore=0 spamscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608280086 On 8/27/26 1:38 AM, Rinat Muhamedgaliev wrote: > The fuel gauge at I2C address 0x55 on OnePlus 6T (fajita) reports > DeviceType 0x0541, identifying it as a TI bq27541 rather than bq27411. > > Binding it as bq27411 selects the wrong register map and produces > invalid voltage, state-of-charge, and temperature readings. Use the > bq27541 compatible and rename the shared label along with its fajita > and enchilada consumers. > > Tested on OnePlus 6T (fajita): queried DeviceType directly over I2C, > built the DTB, booted it once with fastboot boot, then installed a > locally built postmarketOS kernel package. Before the change, readings > included about 65 V, over 10000% SOC, and -273.1 C. Afterward, the > bq27xxx driver bound as ti,bq27541 and reported 3.835 V, 42% SOC, and > 33.3 C. > > Fixes: 12dfb002ca01 ("arm64: dts: qcom: sdm845-oneplus-*: add fuel gauge") > Closes: https://gitlab.com/sdm845-mainline/linux/-/issues/36 > Link: https://gitlab.com/sdm845-mainline/linux/-/merge_requests/148 If I'm reading that thread right, this IC is on the battery itself (?) and it seems to differ across different units / suppliers, would that be a good interpretation? Konrad