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GET /api/patches/2194337/?format=api
{ "id": 2194337, "url": "http://patchwork.ozlabs.org/api/patches/2194337/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260208180746.2024338-9-mmaddireddy@nvidia.com/", "project": { "id": 21, "url": "http://patchwork.ozlabs.org/api/projects/21/?format=api", "name": "Linux Tegra Development", "link_name": "linux-tegra", "list_id": "linux-tegra.vger.kernel.org", "list_email": "linux-tegra@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260208180746.2024338-9-mmaddireddy@nvidia.com>", "list_archive_url": null, "date": "2026-02-08T18:07:41", "name": "[V5,08/13] PCI: tegra194: Disable direct speed change for EP", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ffc2d8bef3c641a50e9ff9c64c9cb60a89da2bcd", "submitter": { "id": 72399, "url": "http://patchwork.ozlabs.org/api/people/72399/?format=api", "name": "Manikanta Maddireddy", "email": "mmaddireddy@nvidia.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-tegra/patch/20260208180746.2024338-9-mmaddireddy@nvidia.com/mbox/", "series": [ { "id": 491428, "url": "http://patchwork.ozlabs.org/api/series/491428/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-tegra/list/?series=491428", "date": "2026-02-08T18:07:33", "name": "Fixes to pcie-tegra194 driver", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/491428/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194337/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194337/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-tegra+bounces-11862-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-tegra@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ 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<lpieralisi@kernel.org>, <kwilczynski@kernel.org>,\n\t<mani@kernel.org>, <robh@kernel.org>, <krzk+dt@kernel.org>,\n\t<conor+dt@kernel.org>, <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": "[V5,08/13] PCI: tegra194: Disable direct speed change for EP", "Date": "Sun, 8 Feb 2026 23:37:41 +0530", "Message-ID": "<20260208180746.2024338-9-mmaddireddy@nvidia.com>", "X-Mailer": "git-send-email 2.34.1", "In-Reply-To": "<20260208180746.2024338-1-mmaddireddy@nvidia.com>", "References": "<20260208180746.2024338-1-mmaddireddy@nvidia.com>", "Precedence": "bulk", "X-Mailing-List": "linux-tegra@vger.kernel.org", "List-Id": "<linux-tegra.vger.kernel.org>", "List-Subscribe": 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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)(376014)(7416014)(36860700013)(1800799024)(921020);DIR:OUT;SFP:1101;", "X-MS-Exchange-AntiSpam-MessageData-ChunkCount": "1", "X-MS-Exchange-AntiSpam-MessageData-0": "\n\t4hQkPkM8MOmGoDaxLDaHPZGrjgsVDqrAH3sL6voxMcQRPgplL4JPbQTsAB+yEyGQEZ5ho4a/pmjboPKg9DkvUVzktwbLUQ7qmRM6kFmAXim/8UKTHTMAy826e64ZZEdYRg4RsY7Tam08Q7NQ77KJEbOOSKdAr5dpIo3w4EKfQmesUo/1vsulfvXSIH+3ZHByHm56jFLmHQA2UDHL1Mp/3iZNCly3Z+Tt9BDl9/seQrbD+oeGZjhfmxxSAjLwU10rzybqUMX815QXp4s8eNsCxJRCM9LKEFb8CZ4tUN3jPvxRafCoL7YXol7agKbr9C8aGrrrXY52D2jvp7JEnPHCFmW3CE6ga477QG4DOiprBA0cJibfJbrdJZCuaLf5R+glWhPW8fg2DC7TzFbmT1CDoHXDeWu6ljeCDJJOEHUbGo5XdAkD3WX5qjZdpgMDuXNF", "X-OriginatorOrg": "Nvidia.com", "X-MS-Exchange-CrossTenant-OriginalArrivalTime": "08 Feb 2026 18:09:02.2817\n (UTC)", "X-MS-Exchange-CrossTenant-Network-Message-Id": "\n 1a40ed07-a8c5-4dc1-7d1d-08de673d23c8", "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\tMWH0EPF000971E3.namprd02.prod.outlook.com", "X-MS-Exchange-CrossTenant-AuthAs": "Anonymous", "X-MS-Exchange-CrossTenant-FromEntityHeader": "HybridOnPrem", "X-MS-Exchange-Transport-CrossTenantHeadersStamped": "IA0PR12MB8894" }, "content": "From: Vidya Sagar <vidyas@nvidia.com>\n\nDisable direct speed change for the endpoint to prevent it from initiating\nthe speed change post physical layer link up at gen1. This leaves the speed\nchange ownership with the host.\n\nFixes: c57247f940e8 (\"PCI: tegra: Add support for PCIe endpoint mode in Tegra194\")\nSigned-off-by: Vidya Sagar <vidyas@nvidia.com>\nSigned-off-by: Manikanta Maddireddy <mmaddireddy@nvidia.com>\n---\nV5:\n* None\n\nV4:\n* None\n\nV3:\n* None\n\nV2:\n* None\n\n drivers/pci/controller/dwc/pcie-tegra194.c | 4 ++++\n 1 file changed, 4 insertions(+)", "diff": "diff --git a/drivers/pci/controller/dwc/pcie-tegra194.c b/drivers/pci/controller/dwc/pcie-tegra194.c\nindex 80da5a032bd4..7463cb1d9606 100644\n--- a/drivers/pci/controller/dwc/pcie-tegra194.c\n+++ b/drivers/pci/controller/dwc/pcie-tegra194.c\n@@ -1807,6 +1807,10 @@ static void pex_ep_event_pex_rst_deassert(struct tegra_pcie_dw *pcie)\n \tpci_epc_deinit_notify(pcie->pci.ep.epc);\n \tdw_pcie_ep_cleanup(&pcie->pci.ep);\n \n+\tval = dw_pcie_readl_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL);\n+\tval &= ~PORT_LOGIC_SPEED_CHANGE;\n+\tdw_pcie_writel_dbi(pci, PCIE_LINK_WIDTH_SPEED_CONTROL, val);\n+\n \tif (pcie->update_fc_fixup) {\n \t\tval = dw_pcie_readl_dbi(pci, CFG_TIMER_CTRL_MAX_FUNC_NUM_OFF);\n \t\tval |= 0x1 << CFG_TIMER_CTRL_ACK_NAK_SHIFT;\n", "prefixes": [ "V5", "08/13" ] }