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Tue, 12 Aug 2025 09:31:26 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 57C9VQso005466 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 12 Aug 2025 09:31:26 GMT Received: from [10.50.36.96] (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1748.10; Tue, 12 Aug 2025 02:31:22 -0700 Message-ID: <0ed803d1-ad7f-8a1b-b704-a3a38bdf4878@quicinc.com> Date: Tue, 12 Aug 2025 15:01:19 +0530 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0 Subject: Re: [PATCH] media: iris: vpu3x: Add MNoC low power handshake during hardware power-off Content-Language: en-US To: Bryan O'Donoghue , Vikash Garodia , Abhinav Kumar , "Mauro Carvalho Chehab" CC: , , , Neil Armstrong References: <20250812-sm8650-power-sequence-fix-v1-1-a51e7f99c56c@quicinc.com> From: Dikshita Agarwal In-Reply-To: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Authority-Analysis: v=2.4 cv=J+Wq7BnS c=1 sm=1 tr=0 ts=689b09ee cx=c_pps a=ouPCqIW2jiPt+lZRy3xVPw==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=GEpy-HfZoHoA:10 a=IkcTkHD0fZMA:10 a=2OwXVqhp2XgA:10 a=j1xqlkoCr8ei4rV8Vy8A:9 a=QEXdDO2ut3YA:10 a=zZCYzV9kfG8A:10 X-Proofpoint-ORIG-GUID: k1ptaVE41BMKs2979_SlT8tmzLOByinq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODA5MDAxNSBTYWx0ZWRfX8MPVfV0qGk0/ qFG9Zm9D+Nzfvmjwy0ZZ7Gfv2Sq6T/6AHwBxMt1mDeBF/2vu+MajxV9AeH0K6qQo24culgrbGUF o7OC+t8oEooWeXO4cMwEVsqsT64gCtLTdY5Yw9EGRJ1YMdQ5D2GDoFnFuhj0Tjtu2EsJ2oeEvsi 3z6v91nQ/s2nGS7M6ZcYAXN5IXX+bqh81bDO8nJLRaj+W+vb+lBsDbyty6E7bLPZ9TK9nxi1Cp5 UJHbg5cG7EXPWtdWMvegHThD59MTzPEmGFM/o/vDaYOoeh/Inxxj5TkP2mwjFMBLusUHC3FmuZX opScTGJBD2L3jQnWxnmK2129xocpGRVGQsyHBjASrZPMHTBlb4i85tbrtETklH7Dp7obpj+T4kr BUIk7XyG X-Proofpoint-GUID: k1ptaVE41BMKs2979_SlT8tmzLOByinq X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-12_04,2025-08-11_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 adultscore=0 malwarescore=0 impostorscore=0 bulkscore=0 phishscore=0 suspectscore=0 spamscore=0 clxscore=1015 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2507300000 definitions=main-2508090015 On 8/12/2025 2:30 PM, Bryan O'Donoghue wrote: > On 12/08/2025 08:48, Dikshita Agarwal wrote: >> Add the missing write to AON_WRAPPER_MVP_NOC_LPI_CONTROL before >> reading the LPI status register. Introduce a handshake loop to ensure >> MNoC enters low power mode reliably during VPU3 hardware power-off with >> timeout handling. > > Can you confirm this is the sequence you want for sm8750 also ? Yes, I have already mentioned in the SM8750 patches. Thanks, Dikshita > > --- > bod