linux/Documentation/devicetree
Kuninori Morimoto d9288d0ba1 ASoC: rsnd: SSI + DMA can select BUSIF
Sound data needs to be sent to R-Car sound SSI when playback.
But, there are 2 interfaces for it.
1st is SSITDR/SSIRDR which are mapped on SSI.
2nd is SSIn_BUSIF which are mapped on SSIU.

2nd SSIn_BUSIF is used when DMA transfer,
and it is always used if sound data came from via SRC.
But, we can use it when SSI+DMA case too.
(Current driver is assuming 1st SSITDR/SSIRDR for it)

2nd SSIn_BUSIF can be used as FIFO.
This is very helpful/useful for SSI+DMA.

But DMA address / DMA ID are not same between 1st/2nd cases.
This patch care about these settings.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2014-06-28 14:41:19 +01:00
..
bindings ASoC: rsnd: SSI + DMA can select BUSIF 2014-06-28 14:41:19 +01:00
00-INDEX Documentation/: update 00-INDEX files 2014-02-10 16:01:40 -08:00
booting-without-of.txt dt/bindings: Remove all references to device_type "ethernet-phy" 2014-01-16 11:11:51 +00:00
usage-model.txt doc: device tree: clarify stuff in usage-model.txt. 2013-06-18 13:46:27 +02:00