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charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzEwMDExOSBTYWx0ZWRfXzVlkpwumibPa 8uAo8KUjsm/WQERPxNyx64Wtcx43Y3KiIVtUAubmsggHTz9x+HdShfwbSKrcJaMJu7bz3vfcuXi p0DB1GSBGJlEMGUtw2HRIDldtDmF4YX5bouiG2m6ZuDosYPGizSr22/pvTAtbkIV2uOti3PE0AD cp9vWqr/Nc8J9VVLj9MqXcPSV2l55S00KF8jZ1qWQfNz0CL7XCTyUP5PxViaLd5/7lmEZOgwnXT Acm6o898bB6u+rbLCQJbYEHEbapoJYe5svFGYB0Y5yq1Hb0ZBHqhkQnQQHL2O6xVcMGdzx0/vGq LHHv4CiPY0yWuxLC7QI6DadSwzX0n+seZsJYzaoCldyrDcK3OJIZy0SuOlZXRppW6ZcfLE4pZZ4 0uD04j59rzRqS8vz1XZMXCEOpCHJZh1IY7qQwmGqt2G5oSfM4R6j+lxdCI0e2nZDGwJ7y+GXkwd MYVDqqiPa3rNgtq7fAg== X-Authority-Analysis: v=2.4 cv=ZcMt8MVA c=1 sm=1 tr=0 ts=6a50de53 cx=c_pps a=Oh5Dbbf/trHjhBongsHeRQ==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=FW7Uz84xZHR0K0vXMAYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=_Vgx9l1VpLgwpw_dHYaR:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzEwMDExOSBTYWx0ZWRfXxtW0ubOyb4Oc Z2vSOiwVoYPGdxkMfzsEXp2gmqI587qCpSC2wbrbBuEVdeHeeGqdhDH5WkXYMbL1npdciMVwnjp zJ17PudrNUKbOIJi1owLnJyWMggm4V0= X-Proofpoint-GUID: 5-tOa30-EwwgiW4FRmBtEVpjj5CoSLO3 X-Proofpoint-ORIG-GUID: 5-tOa30-EwwgiW4FRmBtEVpjj5CoSLO3 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=2026-07-10_03,2026-07-09_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 bulkscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 phishscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607100119 Hi Konrad, On 7/10/2026 2:31 PM, Arpit Saini wrote: > Hi Konrad, > > On 7/6/2026 3:33 PM, Konrad Dybcio wrote: >> On 7/6/26 8:04 AM, Nabige Aala wrote: >>> From: Arpit Saini >>> >>> Enable the Qualcomm Shikra MDSS display subsystem on the Shikra CQM EVK >>> board and add the DLC0697 MIPI DSI display panel node. Pin pm4125_l5 >>> to 1.232V with regulator-allow-set-load for DSI PHY PLL stability. >>> >>> Signed-off-by: Arpit Saini >>> Signed-off-by: Nabige Aala >>> --- >> [...] >> >>> +    panel_bl_en: panel-bl-en-state { >>> +        pins = "gpio91"; >>> +        function = "gpio"; >>> +        drive-strength = <2>; >>> +        bias-disable; >>> +        output-high; >>> +    }; >>> + >>> +    panel_bl_en_suspend: panel-bl-en-suspend-state { >>> +        pins = "gpio91"; >>> +        function = "gpio"; >>> +        drive-strength = <2>; >>> +        bias-pull-down; >>> +        output-low; >>> +    }; >> output-foo isn't necessary, the panel driver will assert it as >> necessary >> >> Konrad > > Ack, thanks for pointing out. > > Arpit > I just checked, 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. Thanks, Arpit