[U-Boot] [PATCH 1/9] dm: pci: return the real controller in pci_bus_to_hose()

[york sun]

On 10/11/2016 07:11 AM, M.H. Lian wrote:
>>
>> I got it. But this does not look that good to me. There are two controllers, and
>> bus number should be relative to the controller itself, not system wide. It's
>> definitely right to assign bus number 0 to both PCIe host controllers, as they
>> forward the bus number on their own bus link. I am wondering we should
>> add a controller number to the PCI command, like the storage device
>> command. The first parameter is the controller number, while the second
>> parameter is the bus number.
> [Minghuan Lian] Yes.  Linux uses "PCI domain" to isolate PCIe controllers.
> And config "CONFIG_PCI_DOMAINS" is to enable domain like controllers number.
> But, under Linux if disable "CONFIG_PCI_DOMAINS ", all PCIe controllers will be assigned continuous  bus
> Number like the current uboot.
>

Where are we on this set?

York