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Wysocki" , Greg Kroah-Hartman , Michael Grzeschik , Bjorn Andersson , Abel Vesa , Peng Fan , Tomi Valkeinen , Johan Hovold , Maulik Shah , Michal Simek , Konrad Dybcio , Thierry Reding , Hiago De Franco , Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "linux-tegra@vger.kernel.org" References: <20250701114733.636510-1-ulf.hansson@linaro.org> <20250701114733.636510-21-ulf.hansson@linaro.org> <4478f28b-47f8-4049-bf17-b7fc95cfac65@nvidia.com> <614f726c-4d6d-463b-a8b3-26d3df590575@nvidia.com> From: Jon Hunter Content-Language: en-US In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LO4P123CA0257.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:194::10) To SJ2PR12MB8784.namprd12.prod.outlook.com (2603:10b6:a03:4d0::11) Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ2PR12MB8784:EE_|DM4PR12MB8570:EE_ X-MS-Office365-Filtering-Correlation-Id: 64a11d19-0ce7-4952-8b51-08ddfc16acb6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|7416014|1800799024|366016; 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In the other case >>>> (drivers/soc/tegra/pmc.c) the "core-domain" and "powergates" are >>>> described through child-nodes, while ->sync_state() is managed by the >>>> parent-device-node. >>>> >>>> In the bpmp case there is no ->sync_state() callback assigned, which >>>> means genpd decides to assign a default one. >>>> >>>> The reason for the warnings above is because we are still waiting for >>>> those devices to be probed, hence the ->sync_state() callback is still >>>> waiting to be invoked. Enforcing ->sync_state() callback to be invoked >>>> can be done via user-space if that is needed. >>>> >>>> Did that make sense? >>> >>> Sorry for the delay, I was on vacation. Yes makes sense and drivers for >>> some of the above drivers are not yet upstreamed to mainline and so this >>> would be expected for now. >> >> >> I have been doing more testing and do see a lot of "tegra-bpmp bpmp: >> sync_state() pending due to" on our platforms for basically are driver >> that is built as a module. It seems a bit noisy given that these do >> eventually probe OK. I am wondering if this should be more of a >> dev_info() or dev_dbg() print? > > Yes, I agree. We have had similar reports for other platforms too. > > I intend to send a patch for this in the next day or so. OK great! Please CC me and I will be happy to test. Cheers Jon -- nvpublic