no more clock-stop mode in McBSP since introduction of McSPI ?

Hi All,

I've been trying to use the McBSPs ports of the OMAP3530 in clock-stop
mode because I have a device that needs configuring via SPI and then
sends framed data on it's own free-running clock.

The arm linux driver still references bits 12:11 for configuring clock-
stop in register SPCr1, but the sprufd1.pdf data sheet (McBSP Manual)
lists those bits as reserved.

Is there any other way to stop the clock of an McBSP port outside of
data frames? Or is my only chance to connect my FSX signal to the chip
select of my device and using FSR for the device's frame (data ready)
signal, restricting me to McBSP1 ?

Have you heard of this?
Someone must know!

Simon