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Mon, 15 Jun 2026 01:37:48 -0700 From: Aniruddha Rao To: , CC: , , "Aniruddha Rao" Subject: [PATCH 0/6] firmware: tegra: bpmp: Add Tegra410 ACPI MBWT support Date: Mon, 15 Jun 2026 08:37:25 +0000 Message-ID: <20260615083731.888055-1-anrao@nvidia.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: rnnvmail203.nvidia.com (10.129.68.9) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN3PEPF0000B370:EE_|PH7PR12MB5620:EE_ X-MS-Office365-Filtering-Correlation-Id: 5f760c6d-b402-4d53-f51c-08decab96910 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|23010399003|82310400026|36860700016|376014|18002099003|11063799006|6133799003|56012099006; X-Microsoft-Antispam-Message-Info: qJEz5L/AT/fzXYWXb4CCSBwf1mRobni0l0bPKrDbtKRtV01vETZvHw5QkLM7XFIBNWn9lR0jU7FFnFNMo0BvNxCnlvt6K2ePqx7pDnv0C+kx/r3LxiDN7rEKOBOhL35hmqzlcXbtd9UWW2HXE+U5cSTgQzXaM3lNUxeDW4tKIkzbLnDNrZKpo1Y5+8Y176c3rAbDwtlYqlCqXcUARoNm1+9fdlh65xzDcaZHRH5Am05dALPSSfeK9c/8Ul2cmnIbdXS6PR1FBjCydU+MRYoJJ8+Sf2ENfwxeG0zsrqZbk6ubLG4sDeJDn76SVD/OrnHnCpXMLAYvuLu9WYg4YapptaPL1mRMf5m3ENnM5UIqbzsLhAx0EWz1nFf0OucgqjBjzXm7OGKdkc3oGovWJ6SY/x/flKwGzcx7KAceGLOo285UTffDMYSvYGVCh34fOk1lp5WPEgOSWa/tOQrq0A14F+dfV7i5iNnWgEbCzg3fVcl/Y55196EwzCjClN7uayNCjdMJqd+OghiLvy+mlNL14C/I1KviHfnvmTBtrR8AvWFd+RPhjgrTu8sUJUC4/Q17wLqC/gBeGpeOIbxi9dHbVfB5dQqHtWdR/6sfciqgFQ7EqKv/KjE7ZsCqMVKu8WoeqRFXdPbaZslc/7yKHjh8d7CNikZOVrqdizebXEAcu+tNWEALSHcwRd8YPfQihH2FZwHeLSPMaO+kMTbUY9YaDAxELMwM/smpVyCfjNJqWCo= X-Forefront-Antispam-Report: CIP:216.228.117.160;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:dc6edge1.nvidia.com;CAT:NONE;SFS:(13230040)(1800799024)(23010399003)(82310400026)(36860700016)(376014)(18002099003)(11063799006)(6133799003)(56012099006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: AIuZTrqyoVjX8gJEQQZaRK7+R0ogYePqxwybWcbOZJGTyRum8G0+iN0eBmqrsL3IECuyKYYsIKdRSyd6kIYdcQHRPR/7BM37UUlzjv+EHzOPhWVVb6F4PK8FtzOPxxnIcmuiN3q+gRtkOlGAkkKeGvtMYPrwJbAbVBSWAEU0wUeaLdbILFKP/ReLEl9LYT+dbnOzfwvEc3K07qlbdRAXC41KqfQtDsUm3+g6tsoQlLxGP3REOfMfRYXFTs/eL6i+bpuaUCSSsWTZPrA6egFIDn1I79foP/nbW9hBZR3UO3u6enDdFZVYrObPMIXxDj7LYcZ+aH6ZrQavLajv1PlzK7BtXWI/6LUGiLfQqwSpn2qu1AF7h/iU/z0hv3X3uYRXQ9I7cTRutwvKZz7QW64+mClCwaV4DnO2o/E9X8xyv7OyJ4XANlQP2xVowE9AoMEB X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Jun 2026 08:38:01.1812 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 5f760c6d-b402-4d53-f51c-08decab96910 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN3PEPF0000B370.namprd21.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5620 Tegra410, an ACPI-based platform, provides Memory Bandwidth Throttler (MBWT) controls for PCIe and GPU connected over chip-to-chip link (Nv-Clink) traffic on the path to DRAM. These controls are accessible through BPMP firmware. The current Tegra BPMP driver depends on Device Tree based transport setup and does not support ACPI-based platforms. This series keeps the existing DT path unchanged, adds ACPI support to the BPMP driver, defines the MBWT BPMP ABI, adds Tegra410 MBWT helper functions, and exposes a narrow sysfs interface for ACPI-based Tegra410 systems when firmware reports support for the required MBWT requests. Aniruddha Rao (6): soc/tegra: Add Tegra410 SoC Kconfig symbol firmware: tegra: bpmp: Move channel, resource init to helper firmware: tegra: bpmp: Add ACPI support firmware: tegra: bpmp: Add the Memory Bandwidth Throttler ABI definitions firmware: tegra: bpmp: Add Tegra410 MBWT BPMP helpers firmware: tegra: bpmp: Add Tegra410 MBWT sysfs interface .../ABI/testing/sys-platform-tegra-bpmp | 51 ++++ drivers/firmware/tegra/Makefile | 2 + drivers/firmware/tegra/bpmp-private.h | 42 +++ drivers/firmware/tegra/bpmp-tegra-sysfs.c | 210 ++++++++++++++ drivers/firmware/tegra/bpmp-tegra410.c | 108 +++++++ drivers/firmware/tegra/bpmp.c | 272 ++++++++++++++---- drivers/soc/tegra/Kconfig | 10 + include/soc/tegra/bpmp-abi.h | 161 ++++++++++- 8 files changed, 807 insertions(+), 49 deletions(-) create mode 100644 Documentation/ABI/testing/sys-platform-tegra-bpmp create mode 100644 drivers/firmware/tegra/bpmp-tegra-sysfs.c create mode 100644 drivers/firmware/tegra/bpmp-tegra410.c -- 2.43.0