[alsa-devel] [PATCH 1/3] ASoC: Add a new imx-ssi sound driver

javier Martin javier.martin at vista-silicon.com
Mon Nov 30 18:09:24 CET 2009

2009/11/30 javier Martin <javier.martin at vista-silicon.com>

> Dear Sascha,
> in "imx_ssi_set_dai_fmt()" callback you should add something like:
>     /* sync */
>     scr |= SSI_SCR_SYN;
> This would enable SSI working in SYN mode which means that RX and TX
> sections will share same frame and bit clocks. Right now I can't imagine a
> situation where this is not desirable. Moreover, if I don't add SYN mode I
> cannot get it working in my i.mx27 based board with an wm8974.

Well, after a chat with Mark it seems that it is not so uncommon that RX and
TX sections have different clocks. So you could add a flag in the platform
data similar to the one that switches between FIQ and DMA so that people can
choose if they want the feature or not.

Thank you.

Javier Martin
Vista Silicon S.L.
CDTUC - FASE C - Oficina S-345
Avda de los Castros s/n
39005- Santander. Cantabria. Spain
+34 942 25 32 60

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