sound on wandboard-quad

[Ruslan Bukin]

What is DAC chip on wardboard?

We may have sound output (i2s) working with sDMA, SSI and AUDMUX, but DAC (off-chip device) may require configuration by SPI or i2c. I.e. we may need a driver for DAC which is not part of i.MX6 soc

Ruslan

On Thu, Jul 12, 2018 at 08:08:58PM +0200, Manuel Stühn wrote:
> Hi,
> 
> is there any support for sound on the imx6-based wandboard quad?  The
> wiki-page says no, but there seem to be some drivers (imx6_ssi.c
> imx6_audmux.c) which suggest some sound context. Unfortunately i don't know
> how to activate them. These drivers are marked as "optional sound" in
> "files.imx6".  What does this mean? In a verbose boot of a recent CURRENT
> (r335134) I do see the following line:
> 
> [..]
> simplebus2: <ssi at 2028000> mem 0x2028000-0x202bfff irq 68 compat fsl,imx6q-ssi (no driver attached)
> [..]
> 
> How can the driver be attached?
> 
> Thanks
> --
> Manuel
> 
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