Issues with WCN6855 / NFA765

Trying to use the NFA765 M.2 in a mini PC (386/64) with Proxmox. I got other WiFi cards working so it seems related to this one specifically, not the passthru config, etc.

Here is the relevant info:

[    0.275842] pci 0000:06:03.0: [1af4:1002] type 00 class 0x00ff00
[    0.282123] pci 0000:06:03.0: reg 0x10: [io  0x9040-0x907f]
[    0.284034] pci 0000:06:03.0: reg 0x20: [mem 0x383800004000-0x383800007fff 64bit pref]
[    0.292119] pci 0000:06:08.0: [1af4:1003] type 00 class 0x078000
[    0.292119] pci 0000:06:08.0: reg 0x10: [io  0x9000-0x903f]
[    0.292119] pci 0000:06:08.0: reg 0x14: [mem 0xc1d0c000-0xc1d0cfff]
[    0.302128] pci 0000:06:08.0: reg 0x20: [mem 0x383800000000-0x383800003fff 64bit pref]
[    0.302128] pci 0000:06:10.0: [17cb:1103] type 00 class 0x028000
[    0.302574] pci 0000:06:10.0: reg 0x10: [mem 0xc1800000-0xc19fffff 64bit]
[    0.312122] pci 0000:06:11.0: [8086:125c] type 00 class 0x020000
[    0.312122] pci 0000:06:11.0: reg 0x10: [mem 0xc1c00000-0xc1cfffff]
[    0.313690] pci 0000:06:11.0: reg 0x1c: [mem 0xc1d08000-0xc1d0bfff]
[    0.322139] pci 0000:06:11.0: reg 0x30: [mem 0xfff00000-0xffffffff pref]
[    0.322139] pci 0000:06:1b.0: [8086:125c] type 00 class 0x020000
[    0.322139] pci 0000:06:1b.0: reg 0x10: [mem 0xc1b00000-0xc1bfffff]
[    0.332121] pci 0000:06:1b.0: reg 0x1c: [mem 0xc1d04000-0xc1d07fff]
[    0.332121] pci 0000:06:1b.0: reg 0x30: [mem 0xfff00000-0xffffffff pref]
[    0.332121] pci 0000:06:1c.0: [8086:125c] type 00 class 0x020000
[    0.332121] pci 0000:06:1c.0: reg 0x10: [mem 0xc1a00000-0xc1afffff]
[    0.342132] pci 0000:06:1c.0: reg 0x1c: [mem 0xc1d00000-0xc1d03fff]
[    0.342132] pci 0000:06:1c.0: reg 0x30: [mem 0xfff00000-0xffffffff pref]
[    0.504796] pci 0000:06:11.0: can't claim BAR 6 [mem 0xfff00000-0xffffffff pref]: no compatible bridge window
[    0.505523] pci 0000:06:1b.0: can't claim BAR 6 [mem 0xfff00000-0xffffffff pref]: no compatible bridge window
[    0.506242] pci 0000:06:1c.0: can't claim BAR 6 [mem 0xfff00000-0xffffffff pref]: no compatible bridge window
[    0.536322] pci 0000:06:11.0: BAR 6: no space for [mem size 0x00100000 pref]
[    0.536843] pci 0000:06:11.0: BAR 6: failed to assign [mem size 0x00100000 pref]
[    0.537393] pci 0000:06:1b.0: BAR 6: no space for [mem size 0x00100000 pref]
[    0.537910] pci 0000:06:1b.0: BAR 6: failed to assign [mem size 0x00100000 pref]
[    0.538452] pci 0000:06:1c.0: BAR 6: no space for [mem size 0x00100000 pref]
[    0.538969] pci 0000:06:1c.0: BAR 6: failed to assign [mem size 0x00100000 pref]
[    4.293071] ath11k_pci 0000:06:10.0: BAR 0: assigned [mem 0xc1800000-0xc19fffff 64bit]
[    4.296003] ath11k_pci 0000:06:10.0: MSI vectors: 1
[    4.296941] ath11k_pci 0000:06:10.0: wcn6855 hw2.0
[    4.297742] ath11k_pci 0000:06:10.0: FW memory mode: 0
[    5.181522] ath11k_pci 0000:06:10.0: chip_id 0x2 chip_family 0xb board_id 0xff soc_id 0x400c0200
[    5.182213] ath11k_pci 0000:06:10.0: fw_version 0x110b196e fw_build_timestamp 2022-12-22 12:54 fw_build_id WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
[    5.250981] ath11k_pci 0000:06:10.0: leaving PCI ASPM disabled to avoid MHI M2 problems
    6.282238] ath11k_pci 0000:06:10.0: failed to receive control response completion, polling..
[    7.322393] ath11k_pci 0000:06:10.0: Service connect timeout
[    7.323314] ath11k_pci 0000:06:10.0: failed to connect to HTT: -110
[    7.324425] ath11k_pci 0000:06:10.0: failed to start core: -110
[    7.534311] ath11k_pci 0000:06:10.0: ignore reset dev flags 0x4000
[    7.642295] ath11k_pci 0000:06:10.0: ignore reset dev flags 0x4000
[   17.802376] ath11k_pci 0000:06:10.0: failed to wait wlan mode request (mode 4): -110
[   17.803426] ath11k_pci 0000:06:10.0: qmi failed to send wlan mode off: -110

It looks to me that the last few lines tell why, but don't have the driver knowledge to be able to debug it ...

Any hints?

Tks!