[alsa-devel] [PATCH 1/2] ASoC: fsi: add device tree support

Mark Brown broonie at opensource.wolfsonmicro.com
Thu Jan 3 13:48:56 CET 2013

On Thu, Dec 27, 2012 at 07:15:19PM -0800, Kuninori Morimoto wrote:

> +- fsia,flags : FSI-A flags [spdif/cpg/stream]
> +- fsia,tx_id : FSI-A DMAEngine ID if needed
> +- fsib,flags : FSI-B flags [spdif/cpg/stream]
> +- fsib,tx_id : FSI-B DMAEngine ID if needed

The flags should be documented - what do these flags mean?  The
DMAEngine stuff is a bit fun but I don't think there's yet been any
resolution of what to do with DMAEngine in DT yet...

> +FSI needs simple-card driver. see also simple-card.txt

This isn't true, the driver can be used with any machine driver.  It's
true that many machines using the FSI driver can be supported with the
simple-card driver but others are also fine.

> +		{ "cpg",	SH_FSI_CLK_CPG },

Is this definitely something that would be fixed by hardware design?

> +		{ "stream",	SH_FSI_ENABLE_STREAM_MODE },

Why wouldn't stream mode be desired?
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