Re: [PATCH 06/17] pci: host: pcie-designware: Use *base-mask* for configuring the iATU

Arnd Bergmann
2014-05-13T13:27:46Z

On Tuesday 13 May 2014 18:56:23 Kishon Vijay Abraham I wrote:
> > If you have a case where the outbound translation is a 256MB (i.e. 28bit)
> > section of the CPU address space, that could be represented as
> >
> > ranges = <0x82000000 0 0 0xb0000000 0 0x10000000>;
> >
> > or
> >
> > ranges = <0x82000000 0 0xb0000000 0xb0000000 0 0x10000000>;
> >
> > depending on whether you want the BARs to be programmed using a low
> > address 0x0-0x0fffffff or an address matching the window
> > 0xb0000000-0xbfffffff.
>
> The problem is, for configuring the window starting at 0xb0000000, the ATU
> should be programmed 0x0000000 (the cpu address for it will be 0xb0000000 though).
>

Then use the first of the two?

Arnd
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