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charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=KPRqylFo c=1 sm=1 tr=0 ts=6a591a2c cx=c_pps a=WeENfcodrlLV9YRTxbY/uA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=3WHJM1ZQz_JShphwDgj5:22 a=UaOxsxZaHnh8_INfHm8A:9 a=QEXdDO2ut3YA:10 a=kacYvNCVWA4VmyqE58fU:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzE2MDE4MiBTYWx0ZWRfX2SW7qxYn9FAA 29PjgtOa14fOZoL3Ry3pkRcdLuweH4kZikvH+sgqIa8i6pInSuaxkGwG5/kFXn4KF4DnUkOfZUH VzIPxIqDrVPJSRq5mb5Ei//QCc6BKGZWuj3RTQr/47VqRajzjwRcIkjhyuk66YPTWkyZw9qBm+Z XjAG50X2RY2JgWVMa8/3luj2edNqybKhsz9MJav876RtxFQpQgcFSnal8hSdFll3kn/oj8/OiV3 FhzelUwkZENbT+4Ht3P3H23D7UR5jOAi5D7SQ27cTHRWjTuJOCKlPdP3/+hV5MquVG7+F+X0PaA /cmE0FEUM80e1clgiCAHuwiW317cGW69NH1KdKeg/dQnS1bXxvtI9E8q8U4mkToRvbua0qcqB+m q1pWrWM1tnjjR2wsxJt4NA24FZfVbo00blb3EV154ajnoBxXX1DQqlQuR57opxkan/eemtdGhxj lKtXi4i71BIGuQoAmBA== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzE2MDE4MiBTYWx0ZWRfXyUCLnC3eP8Eg htqXrs5DIj8ZfVOf+4gFyOfZuOEEigckPnlY6OFM5bo03jAuAC881pK2ocWloIM/ZIRNclPrQl+ QZ3puihxPlT5a6rcryYb64FWBM0wZyI= X-Proofpoint-GUID: PlWvQ_inGg7oDp6fyttXsleIqHI_u8Qd X-Proofpoint-ORIG-GUID: PlWvQ_inGg7oDp6fyttXsleIqHI_u8Qd X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-16_06,2026-07-15_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 lowpriorityscore=0 adultscore=0 impostorscore=0 clxscore=1015 malwarescore=0 bulkscore=0 spamscore=0 phishscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607160182 On 7/14/26 9:21 AM, Arpit Saini wrote: > Hi Dmitry,Konrad > > On 7/10/2026 6:09 PM, Dmitry Baryshkov wrote: >> On Fri, Jul 10, 2026 at 05:28:04PM +0530, Arpit Saini wrote: >>> Hi Konrad, >>> >>> On 7/10/2026 2:31 PM, Arpit Saini wrote: [...] >>> Normally the backlight EN pin is controlled by a backlight driver. >>> >>> However, this panel uses MIPI DCS based backlight control with no >>> >>> separate backlight driver. Since there is no driver to assert gpio91, >>> >>> we control it via the panel's pinctrl default state.. >>> >>> So this is platform specific pin , we need this to enable/disable >>> >>> the backlight. >> >> Handle it from the panel driver. Also please fix your editor to prevent >> it from inserting extra empty lines. >> > > Earlier I handled it through panel driver, but this GPIO is specific to our > Qualcomm Daughter Card, it is not going to the panel connector. So is it an enable pin of a voltage regulator maybe? I'm having trouble understanding how this is all tied together, given the panel driver uses DCS commands to control the backlight status Konrad