possible MXS-i2c bug
Wolfram Sang
w.sang at pengutronix.de
Fri Apr 27 10:59:36 EDT 2012
Hi,
> I've been thinking about the DMA approach. The problem I found out is that we
> need to transfer all messages we're given at time in one DMA chain ... at least
> that's how I understand it from the FSL manual (see Fig. 27-10 in the mx28
> manual).
I can't follow you: mxs_i2c_xfer() gets a list of messages, yet they
are iterated over in mxs_i2c_xfer_msg(). A single I2C message is
unscattered and can't be bigger than 64KB, so that should be doable?
Am I missing something by already being in weekend-mode? :)
--
Pengutronix e.K. | Wolfram Sang |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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