Apologies to anyone who is seeing this for the second time. I forgot to format as plain text on the first transmission. Cyril Brulebois kindly provided me with Debian packages for the two kernels he built and I tested them as well. I can confirm that the one without the three patches still had the panic on power up and when a PCIe device is present. Otherwise it booted without difficulty. The kernel with three patches booted successfully on all tries both cold and warm with a PCIe/NVME installed. I was also able to mount partitions on the NVME driver and copy data off. My hardware CM4 with WiFi/BT, 8GG RAM and no eMMC. (Official) I/O board PCIe/NVME adapter card with Intel 670p SSD installed 32GB Samsung EVO Select SD card (boot device.) Thanks to all who contributed to this fix. On Thu, Apr 6, 2023 at 4:31 PM Cyril Brulebois <kibi@xxxxxxxxxx> wrote: > > Hi Jim, > > Jim Quinlan <jim2101024@xxxxxxxxx> (2023-04-06): > > The current driver assumes the downstream devices can provide clkreq# for > > ASPM. These commits accomodate devices w/ or w/o clkreq# and also handle > > L1SS-capable devices. > > > > The Raspian Linux folks have already been using a PCIe RC property > > "brcm,enable-l1ss". These commits use the same property, in a > > backward-compatible manner, and the implementaion adds more detail and also > > automatically identifies devices w/o a clkreq# signal, i.e. most devices > > plugged into an RPi CM4 IO board. > > > > Jim Quinlan (3): > > dt-bindings: PCI: brcmstb: Add two optional props > > PCI: brcmstb: Clkreq# accomodations of downstream device > > PCI: brcmstb: Allow setting the completion timeout > > > > .../bindings/pci/brcm,stb-pcie.yaml | 12 +++ > > drivers/pci/controller/pcie-brcmstb.c | 93 +++++++++++++++++-- > > 2 files changed, 95 insertions(+), 10 deletions(-) > > > > > > base-commit: 99ddf2254febae9eab7fb0bcc02c5322243f5c49 > > I've just verified with the exact same hardware as in Bugzilla#217276 > that latest master (v6.3-rc5-137-gf2afccfefe7b) still gets a kernel > panic at boot, which goes away once those 3 patches are applied. Do you > need any extra information, log excerpt, or something like that? > > > Cheers, > -- > Cyril Brulebois (kibi@xxxxxxxxxx) <https://debamax.com/> > D-I release manager -- Release team member -- Freelance Consultant -- Beautiful Sunny Winfield
