WCN6885 crashes on Xperia 1 IV

[Konrad Dybcio]

On 21.11.2022 17:14, Kalle Valo wrote:
> Konrad Dybcio <konrad.dybcio at linaro.org> writes:
> 
>> Hi Kalle, Dmitry
>>
>> I recently got Wi-Fi to work on my SM8450 Sony Xperia 1 IV (with the
>> help of Dmitry), but I can only get it to function using very old CrOS
>> firmware [1]. Linux-next fw breaks for me in the same way that it did
>> for Dmitry here [2]. There is however also the fw shipped with the
>> phone (not sure how redistributable it is, you can extract it from the
>> OTA [3] update by running simg2img from android-tools and mounting it.
>> You will find it in image/):
>>
>> - amss20.bin (renamed to amss.bin)
>> - m3.bin
>> - board.e[0-9af] (Dmitry gave me a hint that I should choose board.e8d
>> based on the reported board_id; renamed to board.bin)
>> - regdb.bin
>>
>> Using this set of firmwares I get a veeery long and unpleasant set of
>> crashes [4].
>>
>> Any ideas where to start tackling this?
> 
> So if I'm understanding correctly, you are using ath11k firmware but the
> board file from the somewhere else? That won't work, the ath11k firmware
> has it's own board file format so you cannot take a board file from
> another driver.
No, the combinations I tried are:

- ath11k fw (doesn't work, see the bugzilla link)
- Android-bundled fw (doesn't work, see [4])
- CrOS fw (works)

where "fw" means "the full set of all firmware files (amss.bin/board[-2].bin/m3.bin) from that source"

Konrad
>