On Jan 23, 2008, at 9:06 AM, Johns Daniel wrote: > I am asking this question once more since my previous try -- right > before the Christmas break -- did not elicit any responses! ;~) > > Without PCI support configured in the kernel, the CompactFlash card is > discovered and configured by the kernel. With PCI support configured > in the kernel, it fails to discover the CF card through the > pata_platform driver. > > (Note that both PCI and CF work fine on this same board with the > generic IDE driver!) > > There are only two differences that I notice between the two kernel > setups that might be significant: > 1.) The libata virq changes from 19 to 20. > 2.) The isa_io_base changes from 0x0 to 0xfcfff000. > Are either of these two changes significant? > > I am using the "arch/powerpc" kernel, version 2.6.20.21. The CF is > wired directly to the local bus in True IDE mode. > > I have some debug info included in my previous message at: > > http://www.nabble.com/CONFIG_PCI-interaction-with-pata_platform-driver-on-MPC834x-board-tc14457502.html
I suggest putting some prints in the driver to see if the addresses that are ioremap() are the same. then I'd track down if/where actual register read/writes are occurring and see if the same address is being used. - k _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
