ath11k: QCN9074: Incompatible board-2.bin for 6GHz

[Kalle Valo]

Sven Eckelmann <sven at narfation.org> writes:

> On Friday, 26 November 2021 11:52:42 CET Sven Eckelmann wrote:
>> I found out that this is actually caused by the BDF. If I've extracted the 
>> board.bin from the TIP board-2.bin [3] (which seems to come from the QCA 
>> ATH.11.4 CS release). With this version, it seems to work fine. I haven't yet 
>> found out what the relevant change is - but if someone has hints then this 
>> would could be interesting for other devices which should be added to things 
>> like OpenWrt.
>
> I had are look at that for another board. And I found out that they changed 
> the size of various sections in the BDF and moved stuff accordingly. And the 
> one in Kalle's ath11k-firmware repository is even using different IDs. This 
> caused the ABI breakage which John described in the other reply.
>
> No idea how the firmware is supposed to handle this. At the moment it is only 
> clear that it didn't handle it :(

I have told the firmware team numerious times that the board file should
be backwards compatible as it creates problems for upstream. And I do
try to keep everything in ath11k-firmware (and in linux-firmware)
backwards compatible, but if they are not please do let me know. For
other repos I cannot do much, if any.

-- 
https://patchwork.kernel.org/project/linux-wireless/list/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches