From: Arnd Bergmann <a...@arndb.de> Date: Tue, 19 May 2009 18:12:02 +0200
> On Tuesday 19 May 2009, Grant Likely wrote: >> 1) Probe the host controller in an of_platform driver. This has the >> advantage of simplicity. The probe routine will get automatically >> called when the PCI host controller device tree node is registered >> with the of_platform bus. The bus parenthood also gets reflected in >> the device model and sysfs. The disadvantage is that it defers PCI >> bus probing until after the of_platform bus is probed (maybe this is >> okay; maybe this already happens anyway). > > This is also what we do on 64-bit systems (well, Cell at this time). > There are no fundamental problems with this, just some slightly > unexpected interactions e.g. when you have use a PCI serial port > as your console before probing PCI. This is also what sparc64 does :-) All of the individual sparc64 PCI controller types have a OF driver and then there is a common layer of OF PCI helper code to do most of the work. _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-dev
