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I2S audio chip on ultimate dock

Posted: Tue Dec 13, 2016 11:30 am
by ngc
In http://vonger.cn/misc/vocore2/source.zip, ES8388 manual is included.
On other hand, in schematics of Ultimate Dock, we see wm89xx.
Which is correct ?

Re: I2S audio chip on ultimate dock

Posted: Wed Dec 14, 2016 4:22 pm
by Vonger
ES8388 is used.
WM8988 and ES8388 are compatible.

Re: I2S audio chip on ultimate dock

Posted: Thu Dec 15, 2016 4:25 am
by ngc
I got OpenWrt/CC source tree with command guided in Wiki page.
> git clone -b VoCore2 https://github.com/Vonger/openwrt-chaoscalmer.git

For ultimate dock, I changed config to add MT7628 sound with OpenWrt's menuconfig and tried building.
But, the building failed because non-existence of es8388 driver.

In "VoCore2" branch, es8388 is described on Vocore2.dts, but no sourcecode files or patches for driver.

Please put the recent source outputs into git repository.

Re: I2S audio chip on ultimate dock

Posted: Thu Dec 15, 2016 10:06 am
by noblepepper
You may want to check out my github repo. Vonger hasn't updated his since he forked at the first of September. I have updated mine with Vonger's audio patches.

If you want to roll your own you can find the patches in my commit history.

Note: Chaos Calmer had a alsa driver (500-alsa.patch) but it has been removed from OpenWrt trunk and Lede because it was deemed broken.