On Wed, Nov 27, 2013 at 04:46:09AM +0800, Marek Vasut wrote: > Dear Pratyush Anand, > > > Hi, > > > > On Wed, Oct 23, 2013 at 12:55:43PM +0800, Tim Harvey wrote: > > > The IMX6 iATU is used for address translation between the AXI bus > > > address space and PCI address space. This is used for type0 and type1 > > > config cycles but is not necessary for outbound io/mem regions. > > > > > > This patch removes the calls that inappropriately re-configures the ATU > > > viewport for outbound memory and IO after config cycles and removes them > > > altogether as they are not necessary. > > > > > > This resolves issues with PCI devices behind switches and has been tested > > > with a Gige device behind a PLX PEX860x switch. More testing is needed > > > for other configurations. > > > > It seems to me that in your controller you have only one view port. > > Also mem_base and mem_bus_addr is same. Thats why it works in your > > case. > > MX6 has 4 In/4 Out viewports AFAICT. Then if I do not miss anything, MX6 should work even without this patch. Regards Pratyush > > Best regards, > Marek Vasut -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
