[U-Boot-Users] MPC83xx SPI driver
bwarren at qstreams.com
Thu Dec 7 23:19:16 CET 2006
On Thu, 2006-12-07 at 23:08 +0100, Joakim Tjernlund wrote:
> > -----Original Message-----
> > From: u-boot-users-bounces at lists.sourceforge.net
> > [mailto:u-boot-users-bounces at lists.sourceforge.net] On Behalf
> > Of Ben Warren
> > Sent: den 7 december 2006 22:56
> > To: uboot
> > Subject: [U-Boot-Users] MPC83xx SPI driver
> > Hello,
> > I'm ready to re-submit a hard SPI driver for some members of
> > the MPC83xx
> > family of CPUs, but am unsure where to put it. While designed for the
> > MPC834x chips, it should also work with the upcoming MPC8313, if the
> > online datasheet is accurate. The other 83xx chips handle
> > SPI with a CPM, so this driver won't work there. Should I put it in
> > cpu/mpc83xx/, drivers/, or somewhere else? And given the unusual chip
> > compatibilities, what should the file be called?
> > Suggestions?
> Does it work on a 8321 in QUICC mode? If so then cpu/mpc83xx/qe_spi.c perhaps?
Doubtful, since the 834x and 8313 don't have QUICC engines. While the
control registers appear to be common among all 83xx chips, on these
ones transmit and receive are handled by dedicated 32-bit registers
rather than the RAM-based descriptor types found in CPMs.
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