[alsa-devel] Intel Baytrail Linux Audio

[Nicolas George]

> Liam Girdwood <liam.r.girdwood at intel.com> wrote:
> > Can you try the bytcr_rt5640 machine driver as the byt-rt5640 machine
> > driver will be getting deprecated (since it only works with a small
> > number of FWs). The bytcr_rt5640 driver works with a wider range of FW.

If that means just "modprobe snd-soc-sst-bytcr-rt5640" instead of "modprobe
snd-soc-sst-byt-rt5640-mach" then it has no effect at all: the module is
loaded but does not create any card and does not print anything.

If that requires changing the source or using sources from a different
repository, please be a little more specific.

Antonio Ospite:
> When testing the bytcr_rt5640 machine driver give also a try to the
> latest firmwares:
> 
> https://git.kernel.org/cgit/linux/kernel/git/vkoul/firmware.git/tree/intel?h=byt
> 
> I had some success with fw_sst_0f28_ssp0.bin

I tried overwriting the fw_sst_0f28.bin-48kHz_i2s_master file with that
file, but it just gives me this message:

[  390.704580] baytrail-pcm-audio baytrail-pcm-audio: wrong ram type 0x7 in block0x0
[  390.704591] baytrail-pcm-audio baytrail-pcm-audio: invalid module 0
[  390.704596] baytrail-pcm-audio baytrail-pcm-audio: error: parse fw failed -22
[  390.704610] baytrail-pcm-audio baytrail-pcm-audio: error: failed to load firmware

It happens when loading snd-soc-sst-baytrail-pcm, i.e. before loading
snd-soc-sst-bytcr-rt5640(-mach).

I guess I am not following the instructions correctly.

Regards,

-- 
  Nicolas George
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