[U-Boot] PCIe switch questions

[Matthias Fuchs]

Hi,

we are using U-Boot on PPC405 and PPC440EPx CPU in systems that have a lot
of PCIe switches and PCIe/PCI bridges. Even multiple cascaded switches and bridges :-)
U-Boot has no problems with these architecture.

But of course nobody really knows if there are issue that you might run into.

Matthias

On Friday 14 August 2009 01:33, dbrazeau wrote:
> 
> Hi. I'm planning on using a IDT PCIe switch on our custom board with a
> PPC_460 cpu.  I have searched the internet and haven't found much in the way
> of references of using a IDT PCIe switch and a PPC with U-boot.  I was just
> wondering if I should expect any issue with U-Boot/Linux communicating with
> devices connected to the PCIe switch. 
> 
> Are there special U-boot configuration requirement when using a PCIe switch? 
> I've looked online and in U-boot documentation and haven't seen a whole lot
> of PCI configuration options except for the environment variable pcie_mode
> and disabling the PCI bus altogether.  
> 
> I just wanted to get some input and thoughts on what I should expect once I
> get the hardware.  Thanks.