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

[javier Martin]

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
www.vista-silicon.com