[Sound-open-firmware] HDMI audio not working on Up^2

[Ranjani Sridharan]

On Fri, 2019-03-22 at 15:04 +0000, Liam Girdwood wrote:
> On Fri, 2019-03-22 at 09:49 -0500, Pierre-Louis Bossart wrote:
> > > I tried to test HDMI audio on Up^2 and hdac_hdmi_set_hw_params()
> > > is
> > > failing with -ENODEV because no port is assigned. Some very light
> > > analysis and debugging showed, that hdac_hdmi_pcm_open() hasn't
> > > been called, but it might wrong. Are there any non-trivial
> > > requirements to use HDMI audio on Up^2? Can it be, that my
> > > monitor
> > > or my cable aren't good enough?
> > 
> > You need to set the PortN-PinM mixers, otherwise the hw_params
> > will 
> > fail. It's super painful and I don't know why it's needed but
> > that's 
> > what it is for now.
> > I typically look for the dmesg, find out which port is not
> > disconnected, 
> > and usually set Port6Pin0 to 1, then use hw:0,1 to get things to
> > play.
> > I don't have the hardware with me so can't provide better advice.
> > Also please use the dapm graph tool to make use everything is
> > setup 
> > correctly.
> 
> Guennadi, could you document this on sof-docs with a paragraph and
> your example
> config / changes. Nothing long needed, just enough to point others in
> the
> correct direction.
Guennadi,

here're my pin/port settings:
Pin5-Port0/1/2 to cvt2
Pin6-Port0/1/2 to cvt3
Pin7-Port0/1/2 to cvt4

And as Liam mentioned SOF master has a regression that still causes a
failure. But you could try the cml-003-drop-stable branch for now and
it should work.

Thanks,
Ranjani

> 
> Thanks
> 
> Liam
> 
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