ath11k - pci - backports/.config issue

[Mathew McBride]

Hello Janusz,
On Fri, Oct 22, 2021, at 1:39 AM, Janusz Dziedzic wrote:
> Hello,
> 
> Hit some issue with my ath11k card,  so maybe someone already fix
> it/know what I missed?
> 
> My card (pcie):
> root at OpenWrt:~# lspci
> 0000:00:00.0 PCI bridge: MEDIATEK Corp. Device 3258
> 0000:01:00.0 Unassigned class [ff00]: Qualcomm QCA6390 Wireless
> Network Adapter [AX500-DBS (2x2)]
> 
> I have this card in my banana-pi-r64 board in pcie slot.
> 
> Checked with current/latest backports (v5.10/v5.15)
> On top added patch (added some changes, attached) based on:
> https://git.openwrt.org/?p=openwrt/staging/hauke.git;a=commit;h=0b115adb1b0cc9c19c7c780f3a9e6437fa0398a5
> Simple choose kmod-ath11k from menuconfig.
> 
> 
Getting PCIe (QCA6390, QCN9074) ath11k cards working under kernel 5.10 takes a bit more work than the versions in the IPQ platforms.

I have a tree here which I have used successfully with the QCA6390 and QCN9074 cards (in our NXP LS1088/Ten64 platform). There are still quite a few bugs with QCN (e.g no MAC address read from the card, reboot issues) but the QCA6390 is working well.

https://gitlab.com/traversetech/ls1088firmware/openwrt/-/commits/arm64_2102_11ax

This tree is actually based on 21.02 with a backported kernel 5.10 (5.4 is too old for our hardware). If you pick most of changes to the master branch it should work.

The backports of MHI bus and ath11k changes are quite large - there are over 200 patches I cherry picked back onto 5.10 to make this work!

You can see the full patch set here:
https://gitlab.com/matt_traverse/ath11k-qcn9074-backport/-/commits/ath11k_5_10_20210909
In the OpenWrt tree above, I squashed these patches into one each for MHI, QRTR  and ath11k (grafting this onto backports)

(There are also patches related to Qualcomm PCIe cellular modems which also use the MHI infrastructure, and which I also want to use under OpenWrt)

Because of that, I haven't made any attempts to upstream this.

Moving to backports-5.15.x should make the situation more bearable, it would also help if drivers/bus/mhi and drivers/net/wwan (for the PCIe modems) is taken from backports as well.

Best Regards,
Matt