mpc8xx idma

hi,

    i'm using a montavista kernel 2.4.20. We program a dsp device driver
which uses idma. Fec uses dma. Sympthoms are next:

system work perfect while device dma driver isn't active.
when active device, starts idma, and system hang

i think problem is fec sdma and idma working simultaneously. Exists any
problem if sdma and idma are working together?

thanks


** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/

i think problem is fec sdma and idma working simultaneously. Exists
any problem if sdma and idma are working together?

Could you be a tad more precise, which DSP and what revision? Since I
know Prodys is working with TI DSPs, you might want to look into the
silicon bug lists. With certain TI DSP, you will not be able to use DMA
initiated by the PPC.

Been there done that ;)

** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/