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Tue, 14 Oct 2025 06:55:07 +0200 (CEST) Message-ID: <00fe408b-db39-4a9f-b996-0fad73724759@xenosoft.de> Date: Tue, 14 Oct 2025 06:55:07 +0200 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PPC] Boot problems after the pci-v6.18-changes From: Christian Zigotzky To: Manivannan Sadhasivam Cc: Lukas Wunner , Manivannan Sadhasivam , =?UTF-8?Q?Ilpo_J=C3=A4rvinen?= , Bjorn Helgaas , linux-pci@vger.kernel.org, mad skateman , "R.T.Dickinson" , Christian Zigotzky , linuxppc-dev , hypexed@yahoo.com.au, Darren Stevens , debian-powerpc@lists.debian.org References: <2E40B1CD-5EDA-4208-8914-D1FC02FE8185@xenosoft.de> <7FB0AB81-AD0F-420D-B2CB-F81C5E47ADF3@xenosoft.de> <3fba6283-c8e8-48aa-9f84-0217c4835fb8@xenosoft.de> Content-Language: de-DE In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit On 13 October 2025 at 05:58 pm, Manivannan Sadhasivam wrote: > Either the Root Port could be triggering these AER messages due to ASPM issue or > due to the endpoint connected downstream. > > If possible, please share the whole dmesg log instead of the snippet so that we > can be sure from where the AER messages are coming from. > > You can also add the below quirk and check: > > DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FSL, 0x0451, quirk_disable_aspm_all); > > But it would be better to get the whole dmesg. > > - Mani Hello Mani, Thanks for your help. The kernel doesn't compile with PCI_VENDOR_ID_FSL but it compiles with PCI_VENDOR_ID_FREESCALE. I tried it with the following patch: diff -rupN a/drivers/pci/quirks.c b/drivers/pci/quirks.c --- a/drivers/pci/quirks.c    2025-10-12 22:42:36.000000000 +0200 +++ b/drivers/pci/quirks.c    2025-10-13 17:59:51.473097708 +0200 @@ -2525,6 +2525,16 @@ static void quirk_disable_aspm_l0s_l1(st   */  DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x1080, quirk_disable_aspm_l0s_l1); + +static void quirk_disable_aspm_all(struct pci_dev *dev) +{ +       pci_info(dev, "Disabling ASPM\n"); +       pci_disable_link_state(dev, PCIE_LINK_STATE_ALL); +} + +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_disable_aspm_all); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, quirk_disable_aspm_all); +  /*   * Some Pericom PCIe-to-PCI bridges in reverse mode need the PCIe Retrain   * Link bit cleared after starting the link retrain process to allow this --- Unfortunately it doesn't solve the issue with pcieport 0001:00:00.0. Here is the dmesg of the RC1 of kernel 6.18 with this patch applied: https://github.com/user-attachments/files/22896410/dmesg_fsl_ppc.txt Cyrus Plus block diagram: https://github.com/chzigotzky/kernels/issues/17#issuecomment-3400086860 Thanks, Christian