[PATCH] Try to support analog audio codec at firefly reload
john at metanate.com
Sat Aug 20 11:33:38 PDT 2016
On Tue, Aug 16, 2016 at 04:42:06AM +0800, Randy Li wrote:
> This patch could enabled the es8328 codec at firefly reload board,
> but it doesn't not really work. I disable the mute of channel
> Left mix and Right mix in alsamixer, I could hear the noise from
> my headphone, but it never be a music.
> I just send this patch here to see whether somebody could figure
> out what is wrong, I am really not familiar with sound.
Have you tried adding an mclk-fs setting to the simple-audio-card? You
probably want to set it to 256, which will allow 44.1kHz, 48kHz, 88.2kHz
and 96kHz at the codec. This will give more functionality than pinning
the clock to a specific rate.
For the Rock2 Square, I write a machine driver for the sound because the
headphone GPIO setup cannot be made to work with simple-audio-card; I
found the Firefly Reload schematic and it looks like the configuration
hardware is very similar. It's a bit of a mess but you can find it on
Github  if you want to take a look.
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