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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id af79cd13be357-936c19988a4sm96648685a.18.2026.08.13.01.06.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 13 Aug 2026 01:06:45 -0700 (PDT) Message-ID: Date: Thu, 13 Aug 2026 16:06:36 +0800 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] dt-bindings: display: msm: Allow two MDSS power domains To: Dmitry Baryshkov Cc: Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Krishna Manikandan , Abel Vesa , Yuanjie Yang , Bjorn Andersson , Konrad Dybcio , linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20260720-msm_gdsc2-v1-0-4687866d6cb0@oss.qualcomm.com> <20260720-msm_gdsc2-v1-1-4687866d6cb0@oss.qualcomm.com> <5jozediov63riomokjzcphmpkpfqdgl73j4hd27vx6yttyddar@7bvbitl5ag2s> Content-Language: en-US From: Yongxing Mou In-Reply-To: <5jozediov63riomokjzcphmpkpfqdgl73j4hd27vx6yttyddar@7bvbitl5ag2s> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Authority-Analysis: v=2.4 cv=ZcQt8MVA c=1 sm=1 tr=0 ts=6a7d7b16 cx=c_pps a=HLyN3IcIa5EE8TELMZ618Q==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=DJpcGTmdVt4CTyJn9g5Z:22 a=EUspDBNiAAAA:8 a=R0RQ14XjvGgjv4nrYs8A:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=bTQJ7kPSJx9SKPbeHEYW:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODEzMDA1NSBTYWx0ZWRfX0SmI1FduBEmL ETn1A62w6YiTCsAkN7RxWE5TmefvX/23d86kZWvnQPEFq0EgZdIbDWRQ4arzxD62oVNEBJrOe9i an/HgsUKvYLC9zHJQyP29Llu6c/MhjA8nw5IgMcrliZTIeE7w/5VHc6sHxxKHJOT0jVeS2X/eGp fRE7qae8MOOzmUmJDeg+9rYMM5XwByKQUQRoPWVBjhgklUHy0QwrEENbH0xrn3zxgisLklj8iLZ tsIH/4s7M8+Wg/Se+UStfJ+/rpCWRyS3zkSrkgdOrypWbnqQILX+7c2AK8SXjJM6dsmr3DSDcOz YliKINx8s5TZWpkktOWOmGZccfvaKxlZ7ndl0B/Y0WDXJH1yBhfGe4PH9xloEZOoo1KNb/D1XXb t7wSvWUbJI7t5tBKb3Iq7eUM82lmYEHZkuSz1tzlFxHgGCs7IlxjM4emugEVGhvXl9UoCwReoBO iRI1MRquR6m1Kuwl5zw== X-Proofpoint-ORIG-GUID: p1GanMVWM7dloXS99DxUH_VJH7_oForR X-Proofpoint-Spam-Info: AW1haW4tMjYwODEzMDA1NSBTYWx0ZWRfXxC1XIRLBbwXB QpEEQuri7Edvls8YhXaoApishphTdKvm6YXz39fOnVK2e/0raJ1t4E43Ftc8LH/NgOchpcNYsIJ x9u1QE6WBTV2Pj60B+F5IAczG5fEQHw= X-Proofpoint-GUID: p1GanMVWM7dloXS99DxUH_VJH7_oForR 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=2026-08-13_02,2026-08-12_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 phishscore=0 malwarescore=0 suspectscore=0 adultscore=0 bulkscore=0 priorityscore=1501 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608130055 On 7/22/2026 2:20 AM, Dmitry Baryshkov wrote: > On Mon, Jul 20, 2026 at 04:43:53PM +0800, Yongxing Mou wrote: >> Kaanapali (SM8750) and Glymur use two display power domains. >> CORE_GDSC powers the main display hardware while INT2_GDSC >> powers a subset of SSPP blocks. >> >> Allow the MDSS bindings to describe both power domains and >> their corresponding power-domain-names values. > > Another question... If INT2_GDSC only powers up a subset of SSPPs, why > is it being declared as powering up the full MDSS? Can we move it to the > DPU device instead? > Hmm, yes, it only use for VIG2/VIG3/DMA5 here. we can move it to DPU. Since listing more than one power-domain disables auto-attach, a small driver change is needed to attach both domains explicitly — MMCX with PD_FLAG_REQUIRED_OPP to keep performance-state voting working, INT2_GDSC as a plain runtime-PM supplier. >> >> Signed-off-by: Yongxing Mou >> --- >> .../devicetree/bindings/display/msm/mdss-common.yaml | 3 ++- >> .../devicetree/bindings/display/msm/qcom,glymur-mdss.yaml | 13 ++++++++++++- >> .../bindings/display/msm/qcom,kaanapali-mdss.yaml | 13 ++++++++++++- >> 3 files changed, 26 insertions(+), 3 deletions(-) >> >