WCN7850 doesn't work on Linux kernel 6.8-rc3

[Dave Jones]

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.

Regards,
Dave