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Tue, 18 Apr 2023 04:35:18 -0700 Received: from drhqmail202.nvidia.com (10.126.190.181) by drhqmail202.nvidia.com (10.126.190.181) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.37; Tue, 18 Apr 2023 04:35:18 -0700 Received: from sumitg-l4t.nvidia.com (10.127.8.10) by mail.nvidia.com (10.126.190.181) with Microsoft SMTP Server id 15.2.986.37 via Frontend Transport; Tue, 18 Apr 2023 04:35:13 -0700 From: Sumit Gupta To: , , , , , , , CC: , , , , , , , , , , , Subject: [Patch 0/6] CPPC_CPUFREQ improvements for Tegra241 Date: Tue, 18 Apr 2023 17:04:53 +0530 Message-ID: <20230418113459.12860-1-sumitg@nvidia.com> X-Mailer: git-send-email 2.17.1 X-NVConfidentiality: public MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT077:EE_|BN9PR12MB5115:EE_ X-MS-Office365-Filtering-Correlation-Id: 023b8b46-5602-48b5-3cec-08db4000ffe9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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SFS:(13230028)(4636009)(346002)(136003)(376002)(39860400002)(396003)(451199021)(36840700001)(40470700004)(46966006)(36756003)(8936002)(8676002)(40460700003)(5660300002)(7416002)(2906002)(4744005)(82310400005)(86362001)(40480700001)(34020700004)(478600001)(7696005)(6666004)(54906003)(110136005)(186003)(107886003)(2616005)(36860700001)(1076003)(70586007)(70206006)(26005)(41300700001)(356005)(82740400003)(316002)(7636003)(83380400001)(4326008)(47076005)(426003)(336012); DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 18 Apr 2023 11:35:23.8679 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 023b8b46-5602-48b5-3cec-08db4000ffe9 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.118.232]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT077.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN9PR12MB5115 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch series contains improvements and changes needed to get a stable value of current CPU frequency from "cpuinfo_cur_freq" sysfs node in Tegra241 SoC. All the CPU's in Tegra241 implement the ARM Activity Monitor Unit (AMU). On reading the sysfs node, the frequency value is re-constructed using AMU counters. Sanjay Chandrashekara (1): cpufreq: use correct unit when verify cur freq Sumit Gupta (5): cpufreq: CPPC: make workaround apply code generic irqchip/gicv3: Export arm_smccc_get_soc_id_xx funcs cpufreq: CPPC: update sampling window for Tegra241 arm64: cpufeature: Export get_cpu_with_amu_feat func cpufreq: CPPC: use wq to read amu counters on target cpu arch/arm64/kernel/cpufeature.c | 1 + drivers/cpufreq/cppc_cpufreq.c | 99 +++++++++++++++++++++++++++++----- drivers/cpufreq/cpufreq.c | 2 +- drivers/firmware/smccc/smccc.c | 2 + 4 files changed, 89 insertions(+), 15 deletions(-)