[alsa-devel] baytrail-pcm-audio: audio broken on Lenovo Thinkpad Tablet 10

[Sebastien Bourdeauducq]

Hi,

the Thinkpad Tablet 10 has an impressive amount of problems under Linux, 
among which the audio is completely broken.

The kernel log is:
[    7.532413] rt5640 i2c-10EC5640:00: Device with ID register 6271 is 
not rt5640/39
[    7.908208] byt-rt5640 byt-rt5640: ASoC: CPU DAI baytrail-pcm-audio 
not registered
[    7.908231] platform byt-rt5640: Driver byt-rt5640 requests probe 
deferral
[    7.931549] baytrail-pcm-audio baytrail-pcm-audio: error: invalid DMA 
engine 0
[    7.931557] baytrail-pcm-audio baytrail-pcm-audio: sst_dma_new failed -22
[    7.967040] baytrail-pcm-audio baytrail-pcm-audio: FW version: 
04.05.13.a0
[    7.967047] baytrail-pcm-audio baytrail-pcm-audio: Build type: a0
[    7.967051] baytrail-pcm-audio baytrail-pcm-audio: Build date: Apr  2 
2014 14:14:39
[    7.967212] byt-rt5640 byt-rt5640: ASoC: CODEC DAI rt5640-aif1 not 
registered
[    7.967248] platform byt-rt5640: Driver byt-rt5640 requests probe 
deferral

I'm running kernel 3.19 with the latest firmware from the linux-firmware 
repository.

Sebastien
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