On Mon, Nov 30, 2009 at 06:09:24PM +0100, javier Martin wrote:
2009/11/30 javier Martin javier.martin@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.
Ok, will do. I myself use the asynchronous mode. The MC13783 I use has two SSI ports, one for capture and one for playback. I route both ports to the same SSI unit using the audio muxer.
Sascha