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Sun, 02 Nov 2025 22:27:31 -0800 (PST) Date: Mon, 3 Nov 2025 03:27:25 -0300 From: Geraldo Nascimento To: linux-rockchip@lists.infradead.org Cc: Shawn Lin , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Krzysztof Kozlowski , Conor Dooley , Johan Jonker , Geraldo Nascimento Subject: [RFC PATCH 2/2] PCI: rockchip-host: drop wait on PERST# toggle Message-ID: References: Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" With this change PCIe will complete link-training with a known quirky device - Samsung OEM PM981a SSD. This is completely against the PCIe spec and yet it works as long as the power regulator for 3v3 PCIe power is not defined as always-on or boot-on. Signed-off-by: Geraldo Nascimento --- drivers/pci/controller/pcie-rockchip-host.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/pci/controller/pcie-rockchip-host.c b/drivers/pci/cont= roller/pcie-rockchip-host.c index ee1822ca01db..6add0faf6dc9 100644 --- a/drivers/pci/controller/pcie-rockchip-host.c +++ b/drivers/pci/controller/pcie-rockchip-host.c @@ -314,7 +314,6 @@ static int rockchip_pcie_host_init_port(struct rockchip= _pcie *rockchip) rockchip_pcie_write(rockchip, PCIE_CLIENT_LINK_TRAIN_ENABLE, PCIE_CLIENT_CONFIG); =20 - msleep(PCIE_T_PVPERL_MS); gpiod_set_value_cansleep(rockchip->perst_gpio, 1); =20 msleep(PCIE_RESET_CONFIG_WAIT_MS); --=20 2.49.0