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Wed, 28 Oct 2026 11:18:51 -0700 (PDT) Received: from [10.206.103.99] ([202.46.23.25]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1a75f7fb28csm9112551c88.18.2026.10.28.11.18.45 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 28 Oct 2026 11:18:50 -0700 (PDT) Message-ID: <687c4153-4a78-4ac6-ba88-1f3f818a84e9@oss.qualcomm.com> Date: Wed, 28 Oct 2026 23:48:43 +0530 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFT 0/5] drm/msm: Attach a driver to GMU To: Akisaira Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org, Rob Clark , Sean Paul , Konrad Dybcio , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Marijn Suijten , David Airlie , Simona Vetter , Neil Armstrong References: <20260513-gmu-sync-state-fix-v1-0-6e33e6aa9b4f@oss.qualcomm.com> Content-Language: en-US From: Akhil P Oommen In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: 6xrN57dFfjJJT8cQm32E2lmZ90dVfW1B X-Proofpoint-ORIG-GUID: 6xrN57dFfjJJT8cQm32E2lmZ90dVfW1B X-Authority-Analysis: v=2.4 cv=Cssq4X4D c=1 sm=1 tr=0 ts=6ae23c8e cx=c_pps a=JYo30EpNSr/tUYqK9jHPoA==:117 a=ZePRamnt/+rB5gQjfz0u9A==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yx91gb_oNiZeI1HMLzn7:22 a=UqCG9HQmAAAA:8 a=ALlH8rN3-6IN5QnqSCAA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=Fk4IpSoW4aLDllm1B1p-:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDI4MDA3MiBTYWx0ZWRfX7mZkRzCLIpZL V2975DHGvKmFKr3M3lz076vavb4BykEEXDVaCIKrOZ8NFcK+oksOz30vQfoXlixQ0mseuZoJYJE NiD7Nm8KsBrVnSjDAE9+YPb7PSNel+7mOjtLppR5MAYM6PkN/gOirmBoUNCfqMCTTqUkviq6/+C 4o220bT8cAuWsZacjIW9RlJRrHo8bUcBcr0DhkPwnw78yoXz2ekXT7AiEUxhieEBClF0+c361rC ewg2Kjbz8l1LSyNW1hMco/LwqagOw4Ynpca/YaFEv5x2UyIsdUikjjBRjsjClcKwm+grqfNgrhv iuhJc67C+McESupymavPkDFH9cE6+C43sWC8tcaWLQzuZL5YcUpJ/STfPb3E5PXvCD/yDW36bgM K7cHysbCPUJoeV8mSat9urf7qUeYDXZaq0xiHHh52+iK8e9aTmX7FfJFinpeINEUyhLvLr5Wi4T 1ZM9fD0yW6KSGXm1OYA== X-Proofpoint-Spam-Info: AW1haW4tMjYxMDI4MDA3MiBTYWx0ZWRfX4DpNsDCDztns vb57l7Wdmi3baZ6grKI8616AL9NPbuASnQ/fj2jzSnS55I9alKRWFbzQ+/UYTzTHjmD/1mz39Ca mrEzu4Hq4Xa6eOQAX3YpJRBF6Hsu+Qg= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.138,FMLib:17.12.100.49 definitions=2026-10-28_05,2026-10-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 impostorscore=0 malwarescore=0 bulkscore=0 phishscore=0 clxscore=1015 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2610190000 definitions=main-2610280072 On 10/28/2026 11:23 PM, Akisaira wrote: > On Wed, May 13, 2026 at 02:22:55AM +0530, Akhil P Oommen wrote: >> With the introduction of sync_state in the genpd framework, any consumer >> device of GCC and GPUCC which is not bound to a driver will result in >> bootup warnings like below: > > Tested on SC8280XP (Huawei MateBook E Go, gaokun3, Adreno 690) running > Android, on top of v7.2.9. Patch 5 needed a small fixup there: > a6xx_gpu_init() declares the GMU node with __free(device_node), so the > explicit of_node_put(node) at the end goes away. > > Without the series, GCC and GPUCC report > >   gcc-sc8280xp 100000.clock-controller: sync_state() pending due to 3d6a000.gmu >   gpu_cc-sc8280xp 3d90000.clock-controller: sync_state() pending due to 3d6a000.gmu > > and six unused GDSCs (ufs_phy, ufs_card and the four > hlos1_vote_mmnoc_mmu_tbu_* ones) stay on unless > fw_devlink.sync_state=timeout is given. > > With the series, 3d6a000.gmu binds to adreno_gmu, both sync_states > complete without the timeout, and the six GDSCs are off. The GPU works > (ANGLE on Turnip), GPU and GMU runtime suspend when idle, and a game > session followed by five s2idle cycles gave no GPU or GMU errors. > > Tested-by: Akisaira # sc8280xp-huawei-gaokun3 Thanks. I am testing the rev2 with some updates. Will post it soon. -Akhil. > > Thanks!