How usable is spi-mxs driver?

[Hector Palacios]

Hello,

I had the feeling that the MXS SPI driver was rather useless due to the SPI being only 
half-duplex on i.MX28, but it looks like people's using it so I was wondering what 
kind of SPI devices can be driven with it, or if there is any trick that allows 
bi-directional communication.

Thanks,
--
Héctor Palacios
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