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Tue, 24 Mar 2026 12:08:08 -0700 From: Manikanta Maddireddy To: , , , , , , , , , , , , , , , , , , <18255117159@163.com> CC: , , , Manikanta Maddireddy Subject: [PATCH v8 00/14] Fixes to pcie-tegra194 driver Date: Wed, 25 Mar 2026 00:37:41 +0530 Message-ID: <20260324190755.1094879-1-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: rnnvmail201.nvidia.com (10.129.68.8) To rnnvmail201.nvidia.com (10.129.68.8) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN2PEPF000044A8:EE_|PH7PR12MB5997:EE_ X-MS-Office365-Filtering-Correlation-Id: f0602c40-d557-4c90-00e6-08de89d8c1ae X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|1800799024|82310400026|36860700016|376014|7416014|13003099007|921020|18002099003|56012099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: t633YXyYIau7jC5nHnVriBGykCYjhDzIiHpcEzFyFkaf/pbrR03Sc77Ai5uEaCqZxXHZeyjH45bt0FqMnFcxwNrrsgwAUdHUPlIwBac+0fH4BW1ZC0ACKX6fz0D+0IgDZLGEmYYX+duGxio+WJUyQK5dCMCJROAoU1U87ncGb2hfff6KIVDhKeU/uwnCv33L9JYtRSmDyPzGSJSHK52YzlQ7sq2xGAnTc5N5i84/TjyXzB3Q2TpH5KlAgpI+snIGIhOb1ra2zwVdejknWxal4U8B2+f3o7EFvNJrPC9uDplhrPeue2/mzNCHqK59vuvm0Zq7WMNLVIXNKy0B3Ajo4CR7A8HaVR4cZNNjDFWSjQhEh+yq4dFuruxlyS1dZDqBsr2+DaxCyJHqP2gndq8rTjU43RTYEoyBJPnk3Zi1PFIYSAapDo0O2hH9TDkTXaIA X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Mar 2026 19:08:38.6528 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f0602c40-d557-4c90-00e6-08de89d8c1ae 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: BN2PEPF000044A8.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PH7PR12MB5997 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 I added fixes tag for below patch and moved this to this series from enhancements series - PCI: tegra194: Disable L1.2 capability of Tegra234 EP 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 (6): PCI: tegra194: Increase LTSSM poll time on surprise down PCI: tegra194: Disable LTSSM after transition to detect on surprise down PCI: tegra194: Disable PERST IRQ only in Endpoint mode PCI: tegra194: Use DWC IP core version PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on Vidya Sagar (8): PCI: tegra194: Fix polling delay for L2 state 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 Endpoint PCI: tegra194: Set LTR message request before PCIe link up PCI: tegra194: Allow system suspend when the Endpoint link is not up PCI: tegra194: Free up EP resources during remove() PCI: tegra194: Disable L1.2 capability of Tegra234 EP drivers/pci/controller/dwc/pcie-designware.c | 4 +- drivers/pci/controller/dwc/pcie-designware.h | 2 + drivers/pci/controller/dwc/pcie-tegra194.c | 199 ++++++++++--------- 3 files changed, 109 insertions(+), 96 deletions(-) -- 2.34.1