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Tue, 09 Jun 2026 08:25:44 -0700 (PDT) X-Received: by 2002:a05:6a00:451b:b0:842:7cb7:a3aa with SMTP id d2e1a72fcca58-842b0f86bf0mr20856437b3a.33.1781018743915; Tue, 09 Jun 2026 08:25:43 -0700 (PDT) Received: from [192.168.1.11] ([120.56.203.186]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84282880050sm21250746b3a.29.2026.06.09.08.25.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2026 08:25:42 -0700 (PDT) From: Manivannan Sadhasivam X-Google-Original-From: Manivannan Sadhasivam To: bhelgaas@google.com, lpieralisi@kernel.org, kwilczynski@kernel.org, vigneshr@ti.com, jingoohan1@gmail.com, thomas.petazzoni@bootlin.com, ryder.lee@mediatek.com, claudiu.beznea.uj@bp.renesas.com, mpillai@cadence.com, Hans Zhang <18255117159@163.com> Cc: robh@kernel.org, s-vadapalli@ti.com, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, claudiu.beznea@tuxon.dev, linux-mediatek@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org In-Reply-To: <20260518004246.1384532-1-18255117159@163.com> References: <20260518004246.1384532-1-18255117159@163.com> Subject: Re: [PATCH v4 0/7] PCI: Add common helper for 100 ms delay after link training Message-Id: <178101873635.8877.10733384254725006435.b4-ty@kernel.org> Date: Tue, 09 Jun 2026 20:55:36 +0530 MIME-Version: 1.0 Content-Type: text/plain; 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X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Mon, 18 May 2026 08:42:39 +0800, Hans Zhang wrote: > PCIe r6.0, sec 6.6.1 (Conventional Reset) requires that for a Downstream > Port supporting Link speeds greater than 5.0 GT/s, software must wait a > minimum of 100 ms after Link training completes before sending any > Configuration Request. > > Several PCIe host controller drivers currently omit this 100 ms delay > when the negotiated link speed is Gen3 (8 GT/s) or higher. Only the DWC > driver already implements it. The missing delay can lead to violations > of the PCIe specification and cause enumeration failures with high-speed > devices (e.g., NVIDIA RTX5070 GPU, PCIe 5.0 NVMe SSDs). > > [...] Applied, thanks! [1/7] PCI: Add pci_host_common_link_train_delay() helper commit: 29fbf582e75015c031e7965fdd4084af123b9ca2 [2/7] PCI: cadence: Add post-link delay for LGA and j721e glue driver commit: 869317b95fd735684057666a65dd8ef95d4bd669 [3/7] PCI: cadence: HPA: Add post-link delay commit: 8dd5d65d0dc750b6890c0102c3992f4cef516196 [4/7] PCI: dwc: Use common pci_host_common_link_train_delay() helper commit: 681adc339e4c972b9f7a5ef8c2fb6a2f7737d4db [5/7] PCI: aardvark: Add 100 ms delay after link training commit: 8a602b8bfebbf9a755e8f4732132719a3b298b29 [6/7] PCI: mediatek-gen3: Add 100 ms delay after link up commit: 798a96740d61c24f193b82388b681b6a4f102d3b [7/7] PCI: rzg3s-host: Use common pci_host_common_link_train_delay() helper commit: 0ae259d0434bc31fc71696355538fd21027d6ebe Best regards, -- Manivannan Sadhasivam