[U-Boot] MPC8541 SPI through CPM
Alemao
xcarandiru at gmail.com
Tue Oct 27 14:36:27 CET 2009
Hi all,
Im trying to use SPI through CPM in my MPC8541 board.
I haven't see support for this combination even in the newest U-Boot.
So I followed MPC8555E Reference Manual, but I'm having some problems:
- I can see the clock and chip select (using a osciloscope) but data
out (MOSI) is always zero.
- If I use chip select from CPM (SPISEL, dedicated pin), instead a
simple GPIO, I got a "Multiple Master Error", as if it was reading the
pin.
Any help is welcome, thanks!
--
Alemao
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