WCN7850 doesn't work on Linux kernel 6.8-rc3

[Dave Jones]

On Tue, Feb 6, 2024 at 8:47 PM Kalle Valo wrote:
>
> Dave Jones <s.dave.jones at gmail.com> writes:
>
> > Hello,
> >
> > I tried to test a wcn8750-based wifi adapter under Linux kernel 6.8-rc3,
> > it's not working. dmesg below:
> >
> > ath12k_pci 0000:02:00.0: BAR 0 [mem 0x90400000-0x905fffff 64bit]: assigned
> > ath12k_pci 0000:02:00.0: MSI vectors: 1
> > ath12k_pci 0000:02:00.0: Hardware name: wcn7850 hw2.0
> > ath12k_pci 0000:02:00.0: qmi dma allocation failed (7077888 B type 1), will try
> > later with small size
> > ath12k_pci 0000:02:00.0: chip_id 0x2 chip_family 0x4 board_id 0xff soc_id 0x4017
> > 0200
> > ath12k_pci 0000:02:00.0: fw_version 0x100301e1 fw_build_timestamp 2023-12-06 04:
> > 05 fw_build_id
> > QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.0_SILICONZ-3
> > ath12k_pci 0000:02:00.0: qmi failed to load regdb bin:
> > ath12k_pci 0000:02:00.0: qmi failed to load regdb file:-2
> >
> > Should I need regdb.bin? If so, where can I get that file? Thanks.
>
> regdb.bin is for developer testing, end users shouldn't use that file.
>
> Can you try ath.git master branch:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git/log/
>
> We have some patches in the pipeline which didn't sadly make it to v6.8.

ath.git master branch does work, thanks!

ath12k_pci 0000:02:00.0: BAR 0 [mem 0x90400000-0x905fffff 64bit]: assigned
ath12k_pci 0000:02:00.0: MSI vectors: 1
ath12k_pci 0000:02:00.0: Hardware name: wcn7850 hw2.0
ath12k_pci 0000:02:00.0: qmi dma allocation failed (7077888 B type 1), will try
later with small size
ath12k_pci 0000:02:00.0: chip_id 0x2 chip_family 0x4 board_id 0xff soc_id 0x4017
0200
ath12k_pci 0000:02:00.0: fw_version 0x100301e1 fw_build_timestamp 2023-12-06 04:
05 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HMT.1.0.c5-00481-QCAHMTSWPL_V1.0_V2.
0_SILICONZ-3
ath12k_pci 0000:02:00.0: leaving PCI ASPM disabled to avoid MHI M2 problems