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Mon, 2 Mar 2026 22:55:08 -0800 From: Manikanta Maddireddy To: , , , , , , , , , , , , , , , , , , <18255117159@163.com> CC: , , , Manikanta Maddireddy Subject: [PATCH v7 00/13] Fixes to pcie-tegra194 driver Date: Tue, 3 Mar 2026 12:24:35 +0530 Message-ID: <20260303065448.2361488-1-mmaddireddy@nvidia.com> X-Mailer: git-send-email 2.34.1 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: rnnvmail202.nvidia.com (10.129.68.7) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF00004FBF:EE_|CH3PR12MB9219:EE_ X-MS-Office365-Filtering-Correlation-Id: 71a7d248-bb06-4799-9221-08de78f1dbbc X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|376014|82310400026|1800799024|36860700013|921020; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: XW5a0IOK7CoQ4qnzghSYOU6amjRvKgPHAFgkMgQbO6GB7DGv/1mzMXpxt0amUQFiOaZlBHRbyILcr8DJcom6kGvzec3b4ZEt7JQvHEgLXU80vTSi/tb9Gbd/cK2mrza9gxUM5pcmaDjeUL3tcxiwQrnJ4vBTAn2pC7LyoxO+40KoOotc1zPiN9lT1rF955XxwUOp1lV14im0xl8bNovoTF1F+bmUAQGdL9F49yh3pNfexy/a+lLmtdlSaX+lMkk+XDbjVfd2zWuLhbgqZDGkp2WFYlI1NpU0V089EjhZmuiOjNqk3y33slXrgurS3freU8EDaBaw/mtcuYnWlCSOndxQm9ig5HG0TzCaHiiY9d+yXWzQUQ2Wh1qjfe/YZ5orM5jIV0R6v1Ps8wIW9rHL/iUC0SNQJKSGQiPUxDGUR9dIyLl+/9PWBrb57Z57R4na X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 03 Mar 2026 06:55:30.0291 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 71a7d248-bb06-4799-9221-08de78f1dbbc 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: BN2PEPF00004FBF.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB9219 This series[1] was originally posted by Vidya Sagar, and I have rebased it onto 6.19.0-rc6-next. I addressed review comments and split this into two series, one for fixes(current) and the other is for enhancements. I verified these patches on Jetson AGX Orin(Tegra234 SoC). I added below four new patches to fix bugs, commit message of each patch has the details on the bug and fix. - PCI: tegra194: Use HW version number - PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on - PCI: tegra194: Disable PERST IRQ only in Endpoint mode Rest of the patches are same as the original V3 series, rebased them on 6.19.0-rc6-next and addressed minor review comments. I reordered the patches with regard to fixes tag. Verification details. - I verified both Root Port and Endpoint mode controllers on Tegra234 SoC. - Basic sanity Link up, configuration space access and BAR access are verified. - I verified that ASPM L1.2 capability is disabled for Endpoint mode. - I verified suspend to RAM tests with Endpoint mode. [1] https://patchwork.kernel.org/project/linux-pci/patch/20221013183854.21087-1-vidyas@nvidia.com/ Manikanta Maddireddy (3): PCI: tegra194: Disable PERST IRQ only in Endpoint mode PCI: tegra194: Use HW version number PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on Vidya Sagar (10): PCI: tegra194: Fix polling delay for L2 state PCI: tegra194: Refactor LTSSM state polling on surprise down PCI: tegra194: Don't force the device into the D0 state before L2 PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select" PCI: tegra194: Disable direct speed change for EP PCI: tegra194: Set LTR message request before PCIe link up PCI: tegra194: Apply pinctrl settings for both PCIe RP and EP PCI: tegra194: Allow system suspend when the Endpoint link is not up PCI: tegra194: Free up EP resources during remove() PCI: tegra194: Free resources during controller deinitialization drivers/pci/controller/dwc/pcie-designware.c | 2 +- drivers/pci/controller/dwc/pcie-designware.h | 2 + drivers/pci/controller/dwc/pcie-tegra194.c | 194 +++++++++---------- 3 files changed, 97 insertions(+), 101 deletions(-) -- 2.34.1