i.MX27 Clock sources

[Lothar Waßmann]

Hi,

> 	For our application, it is necessary to interface this device to
> a Texas Instruments TLV320AIC3204 CODEC.  The i.MX27 provides the clock
> via SSI3_CLK, and communicates using I²S and I²C.  I understand that the
> clock divider for the SSIs is driven from either MPLL or SPLL; but what
> I'm not certain on is where those are configured in the Linux kernel, or
> what the implications are for tinkering with these.
> 
> 	Ideally I'd like to adjust MPLL/SPLL and/or the SSI clocks so
> that the clock rate is some multiple of the I²S bit rate.  So far I can
> get it close; but not close enough.  Does anyone have any pointers as to
> where I can look in the Linux kernel for this information?
> 
Can't you use the codec in master mode, instead of fiddling with the
CPU clocks?


Lothar Waßmann
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