On 15 January 2015 at 08:50, Thierry Reding [off-list ref] wrote:

On Wed, Jan 14, 2015 at 08:02:25AM +0100, Tomeu Vizoso wrote:

quoted

On 14 January 2015 at 01:32, Dylan Reid [off-list ref] wrote:

quoted

On Tue, Jan 13, 2015 at 9:49 AM, Tomeu Vizoso [off-list ref] wrote:

quoted

On 13 August 2014 at 03:56, Dylan Reid [off-list ref] wrote:

quoted

The Acer Chromebook 13, codenamed "Big", contains an NVIDIA tegra124
processor and is similar to the Venice2 reference platform.

The keyboard, USB 2, audio, HDMI, sdcard and emmc have been tested
and work on the 1366x768 models.  I haven't tried on the HD systems
yet.

Hi Dylan,

do you have any notes on how you tested audio? I have been fiddling a
bit with amixer but haven't been able to get any sound from the
speakers nor the headphones.

I don't have any notes, and it's been a while since I tried it.  To
the best of my knowledge, I loaded the UCM config from the ChromeOS
tree manually with alsaucm, then enabled/disabled headphones from
there.

https://chromium.googlesource.com/chromiumos/third_party/adhd/+/master/ucm-config/nyan/NVIDIA%20Tegra%20Venice2/

The important stuff is all in the enable sequence of HiFi.conf

Let me know if that helps.

Thanks, it does work fine now. Will submit that conf file upstream.

Out of curiosity, where is "upstream" for UCM configuration files? It'd
be interesting to collect files for other Tegra boards there. I find it
rather tedious figuring out time and time again what control needs to be
toggled to enable a certain output.

This is the best we have right now, TTBOMK.

http://git.alsa-project.org/?p=alsa-lib.git;a=tree;f=src/conf/ucm

Regards,

Tomeu

Stephen, since you undoubtedly have the most experience with upstream
audio, do you happen to know if we have something like that for the
other upstream-supported boards?

Thierry