[alsa-devel] How to transfer more than 2 channels between i.MX25 & AD1938 using SSI?
sven.zeisberg at googlemail.com
Wed Aug 25 16:39:51 CEST 2010
has anybody succeeded to transfer more than 2 audio channels between
i.MX25 and a CODEC throught the i.MX25 SSI Port?
We have succeeded to set the CODEC (AD1938) as Master to the required
mode (TDM with 8 Timeslots and 32 Bit per Timeslot). However, as soon as
we start to play a wav file with aplay, we can see on the logic analyzer
that the data format on the SSI lines is reset to a stereo mode (2
channels with frame sync changing level between channels).
In the imx-ssi driver, I can see that .channel_max = 2 - therefore my
question: does this driver support more than two channels at all?
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