[Sound-open-firmware] [PATCH] arch: xtensa: set SRAM window error codes during bootloader

[Liam Girdwood]

On Tue, 2018-06-12 at 09:44 +0200, Lauda, Tomasz wrote:
> > > 
> > > Xiuli/Liam/Tomasz,
> > > 
> > > There is a regression due to the set of the bootloader patches on my up
> > > squared board. The audio is distorted now.
> > > 
> > > I reverted these patches and I could hear clean audio.
> > 
> > + Keqiao who may reported similar issue on UP^2.
> > Hi Keqiao, can you check what Ranjani founded?
> > 
> > Thanks,
> > ~Keyon
> 
> Glitches are probably due to the problem with Host DMA not exiting L1 
> state on time.
> Bootloader patch enabled L1 cache on APL, so that's why you are seeing 
> the problem now.
> It will be fixed after my pm_runtime patch will go through.

This may probably also benefit with the new HDA DMA GW optimal programming flow
that Marcin has suggested too.

Liam
---------------------------------------------------------------------
Intel Corporation (UK) Limited
Registered No. 1134945 (England)
Registered Office: Pipers Way, Swindon SN3 1RJ
VAT No: 860 2173 47

This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.