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Wysocki" , Mark Rutland , Daniel Lezcano , Thomas Gleixner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl , Ge Gordon , BST Linux Kernel Upstream Group , Jesper Nilsson , Lars Persson , Alim Akhtar , Ivaylo Ivanov , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Dinh Nguyen , Matthias Brugger , AngeloGioacchino Del Regno , Thierry Reding , Bjorn Andersson , Konrad Dybcio , =?UTF-8?Q?Andreas_F=C3=A4rber?= , =?UTF-8?B?WXUtQ2h1biBMaW4gW+ael+elkOWQm10=?= , Heiko Stuebner , Shawn Lin , Orson Zhai , Baolin Wang , Michal Simek References: <20260523140242.586031-1-maz@kernel.org> <20260523140242.586031-13-maz@kernel.org> <3c714ae3-8f62-4785-9f61-ba9899fd70d8@nvidia.com> <86wlvgpacz.wl-maz@kernel.org> From: Jon Hunter Content-Language: en-US In-Reply-To: <86wlvgpacz.wl-maz@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-ClientProxiedBy: LO4P123CA0572.GBRP123.PROD.OUTLOOK.COM (2603:10a6:600:276::22) To SJ1PR12MB6051.namprd12.prod.outlook.com (2603:10b6:a03:48a::18) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PR12MB6051:EE_|SA1PR12MB8699:EE_ X-MS-Office365-Filtering-Correlation-Id: 8baa65b2-3042-4a88-0a94-08ded6a070e9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|23010399003|7416014|376014|1800799024|22082099003|18002099003|56012099006|4143699003|11063799006; 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I gave this a test because I observed the warning >> that was added on the Tegra194 and Tegra234 platforms. This change >> fixes the warning for Tegra234, but on Tegra194 the platforms I tested >> hang on boot. It appears to be similar to the issue that Marek saw on >> his platforms and so I am wondering if Tegra194 also doesn't have this >> wired up? > > I think you are in a better position than me to find out. It also > could be a firmware issue not making the PPI a Group-1 interrupt, and > therefore not allow Linux to configure the interrupt. Yes absolutely. I will see what I can find out. >> Was there any resolution to the issue reported by Marek? >> >> FYI, the Tegra194 SoC has the 'NVIDIA Carmel ARM v8.2' CPUs [0]. > > There is no resolution so far. Florian was going to check what the > deal is with the Broadcom-related systems, but hasn't come back with > an answer yet. > > The possibilities are as follows: > > - remove the interrupt for the EL2 virtual timer and live with the > warning > > - add a patch such as [1], which should document the reason why this > is now working (and fallback to the EL2 physical timer) > > I'm happy either way, as long as we know exactly what we are dealing > with on each affected platform. I would like to get the warning fixed for Tegra234. Do you want to split that part out of your patch and then I can test and we can at least fix for that device while I see whats up with Tegra194? Jon -- nvpublic