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T . Dickinson" , Darren Stevens , John Paul Adrian Glaubitz , Lukas Wunner , luigi burdo , Al , Roland , Hongxing Zhu , hypexed@yahoo.com.au, linuxppc-dev@lists.ozlabs.org, debian-powerpc@lists.debian.org, linux-kernel@vger.kernel.org, Bjorn Helgaas Subject: [PATCH v2 4/4] PCI/ASPM: Avoid L0s and L1 on Freescale Root Ports Date: Mon, 10 Nov 2025 16:22:28 -0600 Message-ID: <20251110222929.2140564-5-helgaas@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251110222929.2140564-1-helgaas@kernel.org> References: <20251110222929.2140564-1-helgaas@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Bjorn Helgaas Christian reported that f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and ASPM states for devicetree platforms") broke booting on the A-EON X5000. Override the L0s and L1 Support advertised in Link Capabilities by the X5000 Root Ports ([1957:0451]) so we don't try to enable those states. Fixes: f3ac2ff14834 ("PCI/ASPM: Enable all ClockPM and ASPM states for devicetree platforms") Fixes: df5192d9bb0e ("PCI/ASPM: Enable only L0s and L1 for devicetree platforms") Reported-by: Christian Zigotzky Link: https://lore.kernel.org/r/db5c95a1-cf3e-46f9-8045-a1b04908051a@xenosoft.de Signed-off-by: Bjorn Helgaas --- drivers/pci/quirks.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 922c77c627a1..b94264cd3833 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2523,6 +2523,7 @@ static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev) * disable both L0s and L1 for now to be safe. */ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1); +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, 0x0451, quirk_disable_aspm_l0s_l1); /* * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain -- 2.43.0