Sorry for the delay, but last week was a busy work week and I had to struggle to package Linux kernel 6.14-rc5 because it fails to cross-compile... it tries to use target compiler flags with the host compiler. I ended up compiling the kernel in a mvebu armhf machine. Also I noticed that some hash algos are failing. All logs presented were obtained from a SolidRun A388 ClearFog Base, if more detailed PCI logs are needed I have the other machine, the Armada Duo that has 2 PCIe slots and handles an AMD RX 550 GPU. Just let me know. - Complete dmesg log, booted with "pci=nomsi" is available here: https://pastebin.com/wDj0NGFN - Complete output of "sudo lspci -vv" is available here: https://pastebin.com/f4yHRhLr - Contents of /proc/interrupts is available here: https://pastebin.com/ejDUuhbJ - Output of "grep -r . /proc/irq/" is available here: https://pastebin.com/4jvFBBhy Let me know if more information is needed. On Mon, Mar 3, 2025 at 8:21 PM Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: > > On Sat, Mar 01, 2025 at 07:49:23PM +0000, Luís Mendes wrote: > > ... I would like to offer my help for testing the patches with your > > guidance. > > > > ... In any way, long story short I've read in some threads about > > mvebu that PCIe is broken, and I say that it is not, the secret to > > have PCIe working is to use a good u-boot bootloader. Many recent > > u-boot versions cause the PCIe not to work on boot and I haven't > > figured out why yet. In fact my A388 systems are working with the > > amdgpu driver and an AMD Polaris, a RX 550 with 4GB VRAM. I have > > been succesfully using PCIe with this old u-boot version: > > https://github.com/SolidRun/u-boot-armada38x repo and branch > > u-boot-2013.01-15t1-clearfog. > > Glad to hear that. Making this work with more versions of u-boot > would be great, and maybe we can make progress on that eventually. > > For right now, I want to try to make progress on Pali's patches. I'm > pretty much in the dark as far as mvebu and IRQ details, but it might > help enlighten me if you could collect these: > > - complete dmesg log, booted with "pci=nomsi" > - complete output of "sudo lspci -vv" > - contents of /proc/interrupts > - output of "grep -r . /proc/irq/" > > For now just pick one of your systems, probably the solidrun one since > that sounds like one that other folks might have. > > Bjorn
