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Wed, 13 Sep 2023 09:47:13 -0700 Received: from drhqmail203.nvidia.com (10.126.190.182) by drhqmail201.nvidia.com (10.126.190.180) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Wed, 13 Sep 2023 09:47:13 -0700 Received: from sumitg-l4t.nvidia.com (10.127.8.10) by mail.nvidia.com (10.126.190.182) with Microsoft SMTP Server id 15.2.986.41 via Frontend Transport; Wed, 13 Sep 2023 09:47:09 -0700 From: Sumit Gupta To: , , , , , , , CC: , , , , , Subject: [Patch v2 0/2] Add support for _TFP and change throttle pctg Date: Wed, 13 Sep 2023 22:16:57 +0530 Message-ID: <20230913164659.9345-1-sumitg@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 X-NV-OnPremToCloud: ExternallySecured X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BL02EPF0001A0FE:EE_|MN2PR12MB4534:EE_ X-MS-Office365-Filtering-Correlation-Id: 3204cc23-2c2a-4188-e570-08dbb4791b01 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Sep 2023 16:47:23.8177 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3204cc23-2c2a-4188-e570-08dbb4791b01 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.118.233];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BL02EPF0001A0FE.namprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB4534 Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org This patch set adds support for two features to get a finer control over the impact of Thermal Throttling on performance. 1) Patch 1: Adds support to read Thermal fast Sampling Period (_TFP) ACPI object and use it over "Thermal Sampling Period (_TSP)" for Passive cooling if both are present. 2) Patch 2: Adds support to reduce the CPUFREQ reduction percentage and not always cause throttling in steps of "20%". Both patches can be applied independently. --- v1[1] -> v2: - Patch 1: add ACPI spec section info in commit description and rebased. - Patch 2: add info about hardware in the commit description. - Patch 2: switched CPUFREQ THERMAL tuning macros to static variables. - Patch 2: update the tunings for Tegra241 SoC only using soc_id check. Jeff Brasen (1): ACPI: thermal: Add Thermal fast Sampling Period (_TFP) support Srikar Srimath Tirumala (1): ACPI: processor: reduce CPUFREQ thermal reduction pctg for Tegra241 drivers/acpi/processor_thermal.c | 41 +++++++++++++++++++++++++++++--- drivers/acpi/thermal.c | 25 ++++++++++--------- 2 files changed, 52 insertions(+), 14 deletions(-) [1] https://lore.kernel.org/lkml/20230817093011.1378-1-sumitg@nvidia.com/