WCN6855 issues with latest linux-firmware

[Kalle Valo]

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

> On Mon, 16 May 2022 at 16:01, Kalle Valo <kvalo at kernel.org> wrote:
>>
>> 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?
>
> Yes, it's the included chip.

Ok, that should help to find it.

>> >> 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.
>
> The board file comes together with the board, as a bunch
> bdwlan.e*/bdwlang.e* files on the modem partition.
> I was using the one corresponding to the board id.
>
> But note, that the driver reports that it did not get the 'failed to
> wait board file download request'. So, it would be good to get the
> board file into the board-2.bin, but for me it looks like a separate
> story.

Yeah, we should try to get the correct board file to board-2.bin. I'll
ask around.

>> 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.
>
> Done: https://bugzilla.kernel.org/show_bug.cgi?id=215987

Thanks!

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