WCN6855 issues with latest linux-firmware

[Kalle Valo]

Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:

> On 12/05/2022 21:23, Kalle Valo wrote:
>> Dmitry Baryshkov <dmitry.baryshkov at linaro.org> writes:
>>
>>> The wcn6855 WiFi chip stopped working for me after an update to the
>>> latest linux-firmware (Linux 5.18-rc2). I can reproduce it with both
>>> hw2.0 and hw2.1 chips.
>>>
>>> Here is the set of kernel messages I'm getting from ath11k_pci driver:
>>>
>>> [    4.422391] ath11k_pci 0000:01:00.0: Adding to iommu group 3
>>> [    4.429571] ath11k_pci 0000:01:00.0: BAR 0: assigned [mem
>>> 0x60400000-0x605fffff 64bit]
>>> [    4.437857] ath11k_pci 0000:01:00.0: enabling device (0000 -> 0002)
>>> [    4.445323] ath11k_pci 0000:01:00.0: MSI vectors: 1
>>> [    4.450375] ath11k_pci 0000:01:00.0: wcn6855 hw2.0
>>> [    5.378488] ath11k_pci 0000:01:00.0: chip_id 0x2 chip_family 0xb
>>> board_id 0x8c soc_id 0x400c0200
>>> [    5.392898] ath11k_pci 0000:01:00.0: fw_version 0x110f0c35
>>> fw_build_timestamp 2022-03-30 09:05 fw_build_id
>>> QC_IMAGE_VERSION_STRING=WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.7
>>> [    5.420648] ath11k_pci 0000:01:00.0: failed to fetch board data for
>>> bus=pci,vendor=17cb,device=1103,subsystem-vendor=17cb,subsystem-device=0108,qmi-chip-id=2,qmi-board-id=140
>>> from ath11k/WCN6855/hw2.0/board-2.bin
>>> [   15.686398] ath11k_pci 0000:01:00.0: failed to wait board file
>>> download request: -110
>>> [   15.694530] ath11k_pci 0000:01:00.0: qmi failed to load bdf file
>>> [   15.700784] ath11k_pci 0000:01:00.0: failed to load board data file: -110
>>
>> What WCN6855 hardware are you exactly using? (make, model etc)
>
> I have asked for the hw details. The user guide for the HDK8450 lists
> WCN6856 chip and also mentions 'Qualcomm® FastConnect™ 6900 Systems'.

So the chip was included within HDK8450? It was not installed to the
board separately or anything like that?

>> And what
>> board file are you using? md5sums of all firmware files is the best.
>
> # md5sum /lib/firmware/ath11k/WCN6855/hw2.1/*
> 460fbd5ddc57b3d2efbf1ca976f78b90
> /lib/firmware/ath11k/WCN6855/hw2.1/amss.bin
> 88b3a4fbde8cab4493f0060ae3b5dee3
> /lib/firmware/ath11k/WCN6855/hw2.1/board-2.bin
> 7fd1c2337b0b6502588d3141e205e735
> /lib/firmware/ath11k/WCN6855/hw2.1/board.bin
> d1460fc1c4595d0d22f82d5baeaabbd8  /lib/firmware/ath11k/WCN6855/hw2.1/m3.bin
> f67be83659c790fe15d1e42af501e9fa
> /lib/firmware/ath11k/WCN6855/hw2.1/regdb.bin

So you are using a separate board.bin file, where did you get it? ath11k
board files are different so you cannot take the board file from
elsewhere.

Can you file this to bugzilla:

https://wireless.wiki.kernel.org/en/users/drivers/ath11k/bugreport

That way it's easier to track and I can try to find the correct board
file.

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