Hi Xuebing,

I didn't try the QSDK on those devices, mainly because of its poor upstream 
support/community involvement. We tried it on other devices, with "mixed" 
results.

Cheers,
      Simon

On Monday, April 17, 2017 10:19:02 PM CEST Xuebing Wang wrote:
> Hi Sven and Simon,
> 
> Thank you very much for your help. I am curious that did you try QCA-WiFi
> driver for ath9k device (like AR9331) + OpenWRT, instead of trying to
> improve ath9k driver?
> 
> QCA-WiFi driver included in QSDK:
> https://www.codeaurora.org/projects/all-active-projects/qsdk
> 
> Thanks.
> Xuebing Wang
> 
> On Thu, Apr 6, 2017 at 3:13 PM, Sven Eckelmann <sven@narfation.org> wrote:
> > On Donnerstag, 6. April 2017 09:04:50 CEST Simon Wunderlich wrote:
> > > Hello Xuebing,
> > > 
> > > it sounds like you have WiFi driver issues. There are some effects like
> > 
> > key
> > 
> > > cache corruption, deafness, and other effects known for the AR93xx
> > 
> > series.
> > 
> > Correct, completely forgot about the deaf and 0xdeadbeef issues. There
> > were
> > also two workarounds for them [1,2] from Simon.
> > 
> > Kind regards,
> > 
> >         Sven
> > 
> > [1] https://patchwork.kernel.org/patch/9433619/
> > [2] https://patchwork.kernel.org/patch/9433621/