[alsa-devel] cht_bsw_rt5645 mostly silent

[Pierre-Louis Bossart]

On 5/31/17 11:53 PM, James Cameron wrote:
> G'day,
>
> I've a laptop on my lab bench with a Realtek ALC5645 codec attached to
> an Intel(R) Atom(TM) x5-Z8350.  Built-in speakers work properly.  Not
> working are;
>
> - headphones; only ever silent playback,
>
> - built-in microphone; only ever silent recording,
>
> - headset microphone; only ever silent recording,
>
> - there is no response to headset jack insertion or removal,
>
> It has never worked.
>
> http://www.alsa-project.org/db/?f=f14914c88544d57f736ed6623000957c93bc4612
> http://dev.laptop.org/~quozl/z/1dCw32.txt dmesg
> http://dev.laptop.org/~quozl/z/1dD2qx.txt dmidecode
> http://dev.laptop.org/~quozl/z/1dGJdK.txt dsdt.dsl
>
> I'm testing with 4.11.1 kernel on Ubuntu 17.04.
>
> I've tried latest UCM/chtrt5645/HiFi.conf c8b344c.
>
> I've tried using alsamixer to experiment with some of the 253 or so
> controls.
>
> I don't have a datasheet.  (My previous work was with ALC5631, for
> which I do have a datasheet, and it was very helpful!)
>
> Also in the box was an NTC thermistor cabled to a TRRS plug, which may
> suggest a design with switchable decoupling capacitors.

I've tested a Realtek rt5645 eval board connected to a MinnowBoard Max 
without issues, the headset worked fine. You can look at example mixer 
settings at https://github.com/plbossart/UCM/tree/master/chtrt5645 or
in the attachments of https://bugzilla.kernel.org/show_bug.cgi?id=95681