I'm trying to wrestle the peak CAN driver for the old, non-device-tree ppc into submission but I'm making a mess of it so far.
I think I'll get it going at some point, but if anybody has or knows of an mscan driver for the mpc5200 can you alert me? Thanks, Mike -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Scott Wood Sent: Tuesday, June 17, 2008 4:30 PM To: Mike Winter Cc: linuxppc-embedded@ozlabs.org Subject: Re: PCI DMA Problems With 82xx? Mike Winter wrote: > We are developing with an 8248-based platform, and we have a vendor > telling us that the PCI hardware is unreliable on this CPU family, in > particular the DMA functionality. A quick search of this list doesn't > turn up any horror stories, although the processor does have some PCI > errata listed. Does anybody have any practical experience using PCI on > the 8248 or similar that they can share with me? Thanks. Make sure that you park the bus on PCI, and elevate PCI's arbitration priority. See fixup_pci() in arch/powerpc/boot/cuboot-pq2.c. I haven't had a problem with PCI DMA when that is done, though I haven't done significant stress testing. -Scott _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
