[alsa-devel] [PATCH v3 6/6] ASoC: zx: add zx296702 hdmi codec

[Mark Brown]

On Fri, May 29, 2015 at 04:10:54PM +0200, Lars-Peter Clausen wrote:
> On 05/29/2015 03:31 PM, Jun Nie wrote:

> >Add zx296702 hdmi codec to enable SPDIF and I2S output
> >via HDMI. The SPDIF/I2S route is exclusive with current
> >software config and need specify which is valid in
> >defconfig.

> That's an issue, the hardware configuration should not depend on kernel
> configuration setting. This makes it impossible to run the same kernel on
> platforms with conflicting settings. It should be possible to configure this
> dynamically at boot time based on platform_data/devicetree, etc.

> But is this device real hardware anyway?

See previous discussions - the SoC has an internal HDMI encoder
connected to a S/PDIF IP which can also be brought out directly as that.
The solution suggested in the previous discussions was to represent the
HDMI IP as a CODEC and connect the S/PDIF IP up to it with a machine
driver, I've not looked at this patch yet though.
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