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

[Jarkko Nikula]

Hi

On 02/17/2015 08:24 AM, Sebastien Bourdeauducq wrote:
> 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

Bard, Oder: Is this codec even from RT564x family? To me it looks RT567x 
based on RT5670_DEVICE_ID 0x6271 in sound/soc/codecs/rt5670.c.

At least sound/soc/codecs/rt5640.c: rt5640_i2c_probe() appears to find 
above same value 0x6271 from the register RT5640_VENDOR_ID2.

If that's the case then one might want to ask Lenovo why they are using 
completely wrong ACPI ID for the codec.

-- 
Jarkko