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<thierry.reding@gmail.com>, <jonathanh@nvidia.com>,\n\t<jingoohan1@gmail.com>, <vidyas@nvidia.com>, <cassel@kernel.org>,\n\t<18255117159@163.com>", "CC": "<linux-pci@vger.kernel.org>, <devicetree@vger.kernel.org>,\n\t<linux-tegra@vger.kernel.org>, <linux-kernel@vger.kernel.org>, \"Manikanta\n Maddireddy\" <mmaddireddy@nvidia.com>", "Subject": "[V5,0/9] Enhancements to pcie-tegra194 driver", "Date": "Sun, 8 Feb 2026 23:39:27 +0530", "Message-ID": "<20260208180936.2026329-1-mmaddireddy@nvidia.com>", "X-Mailer": "git-send-email 2.34.1", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "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\n rnnvmail201.nvidia.com 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"X-Forefront-Antispam-Report": "\n\tCIP: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)(82310400026)(7416014)(376014)(1800799024)(36860700013)(13003099007)(921020);DIR:OUT;SFP:1101;", "X-MS-Exchange-AntiSpam-MessageData-ChunkCount": "1", "X-MS-Exchange-AntiSpam-MessageData-0": "\n\tveoxiOj4mP2luTQKu1aX39vWiZYDvVrSPD5rdy5FaGx/JaFgLt1UP6YFk8ZE801x7WImEVKPPPLLgqB6qUbTRAkhQQ/URfeu/rxsYxHskfflKZ/SEs6qGyaAThbH1dwtSciQd6tKCITpawtQll2fvspXJ/U8l7GaZ8/0KCNIb5/yVkxP79zR97Dc2BaM5hILrsz6DZaV4eGT3D0IsvSMx/gs5ln1vuoKnm0FDmyXnt4bMalvCfnSkBCYn8x6OOLiRzPojVtMMlJGX0o3/vF8CWElHbCsjOt5w3rxzbEiR7dvkpMIF1UUgcZ+uyaJjCQmHJEd87CvcPzab067PfIJLZ2TBlfJjwb1eQfXoVNmNgldCQN50BwFPexh3YPr69pMEsy1l1TN8e23LpdKUvV+dNYFTqAWipR5YbkXathf3cNCKM2u+o9n1M4ueILfhLvb", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "08 Feb 2026 18:10:02.3389\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n eee6fc7f-f872-4353-7198-08de673d4795", "X-MS-Exchange-CrossTenant-Id": "43083d15-7273-40c1-b7db-39efd9ccc17a", "X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp": "\n TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.117.160];Helo=[mail.nvidia.com]", "X-MS-Exchange-CrossTenant-AuthSource": "\n\tMWH0EPF000971E8.namprd02.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "MN2PR12MB4343" }, "content": "This series[1] was originally posted by Vidya Sagar, and I have rebased\nit onto 6.19.0-rc6-next. I addressed review comments and split this into\ntwo series, one for fixes and the other is for enhancements(current).\nI verified these patches on Jetson AGX Orin(Tegra234 SoC).\n\nDisabling L1SS capability based on support-clkreq device tree property\nis moved to common DWC driver, so I reworked below patch to disable\njust L1.2 capability on Tegra234 SoC.\n - PCI: tegra194: Disable L1.2 capability of Tegra234 EP\n\nI added below new patch to tune the ASPM parameters, commit message of the\npatch has the details on the bug and fix.\n - PCI: tegra194: Add ASPM L1 entrance latency config\n\nI added more context in the commit message for below patch based on review\ncomment in V3.\n - PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt registration\n\nRest of the patches are same as the original V3 series, just rebased them on\n6.19.0-rc6-next.\n\nVerification details.\n - I verified both Root port and Endpoint mode controllers on Tegra234 SoC.\n - Basic sanity Link up, configuration space access and BAR access are verified.\n - I verified that ASPM L1.2 capability is disabled for Endpoint mode.\n - I verified suspend to RAM tests with Endpoint mode.\n\n[1] https://patchwork.kernel.org/project/linux-pci/patch/20221013183854.21087-1-vidyas@nvidia.com/\n\nManikanta Maddireddy (1):\n PCI: tegra194: Add ASPM L1 entrance latency config\n\nVidya Sagar (8):\n PCI: tegra194: Drive CLKREQ signal low explicitly\n PCI: tegra194: Calibrate P2U for endpoint mode\n PCI: tegra194: Remove IRQF_ONESHOT flag during Endpoint interrupt\n registration\n PCI: tegra194: Enable DMA interrupt\n PCI: tegra194: Enable hardware hot reset mode in Endpoint\n PCI: tegra194: Disable L1.2 capability of Tegra234 EP\n dt-bindings: PCI: tegra194: Add monitor clock support\n PCI: tegra194: Add core monitor clock support\n\n .../bindings/pci/nvidia,tegra194-pcie-ep.yaml | 6 +-\n .../bindings/pci/nvidia,tegra194-pcie.yaml | 6 +-\n drivers/pci/controller/dwc/pcie-tegra194.c | 67 ++++++++++++++++++-\n 3 files changed, 76 insertions(+), 3 deletions(-)" }