[PPC] Boot problems after the pci-v6.18-changes

[Christian Zigotzky]

> On 15 October 2025 at 01:58 pm, Herve Codina <herve.codina at bootlin.com> wrote:
> 
> Hi Christian,
> 
>> On Wed, 15 Oct 2025 13:30:44 +0200
>> Christian Zigotzky <chzigotzky at xenosoft.de> wrote:
>> 
>> Hello Herve,
>> 
>>>> On 15 October 2025 at 10:39 am, Herve Codina <herve.codina at bootlin.com> wrote:
>>> 
>>> Hi All,
>>> 
>>> I also observed issues with the commit f3ac2ff14834 ("PCI/ASPM: Enable all
>>> ClockPM and ASPM states for devicetree platforms")  
>> 
>> Thanks for reporting.
>> 
>>> 
>>> Also tried the quirk proposed in this discussion (quirk_disable_aspm_all)
>>> an the quirk also fixes the timing issue.  
>> 
>> Where have you added quirk_disable_aspm_all?
> 
> --- 8< ---
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 214ed060ca1b..a3808ab6e92e 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -2525,6 +2525,17 @@ static void quirk_disable_aspm_l0s_l1(struct pci_dev *dev)
>  */
> 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);
> +}
> +
> +/* LAN966x PCI board */
> +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_EFAR, 0x9660, 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
> --- 8< ---
> 
> Best regards,
> Hervé

It is the same patch, I use for my AMD Radeon cards.

In my point of view we have to add a lot of other devices.

But if the computer does not boot, will the average user know that there is a problem with the power management and their graphics card?
I am unsure whether I can deliver the kernel to average users later on.

Thanks,
Christian