[PATCH 2/3] [POWERPC] Add pci node to sequoia dts
Segher Boessenkool
segher at kernel.crashing.org
Sat Aug 25 19:49:58 EST 2007
> + pci {
> + reg = <1 eec00000 40 1 ef400000 40>; /* phb cfg, phb reg */
First component of reg is the unit address, so: pci at 1eec00000 .
"phb cfg" is how you access PCI configuration space? It wouldn't
hurt to document that, either in a little binding or just here in
the code.
> + bus-range = <0 0>;
Can't you have subordinate PCI busses? Or are there no slots :-)
> + /*
> + * mem is at 80000000 set up indirectly
> + * io is at 0001_e800_0000
> + */
> + ranges = <02000000 0 80000000 1 80000000 0 10000000
> + 01000000 0 00000000 1 e8000000 0 00100000>;
Comment doesn't match code for the memory space. What does "set
up indirectly" mean here? Oh wait, you want to say that the host
addresses 1_8000_0000..1_8fff_ffff are translated to PCI addresses
8000_0000..8fff_ffff.
What about PCI DMA, is that identity mapped?
> + #interrupt-cells = <1>;
> + #size-cells = <2>;
> + #address-cells = <3>;
The reverse order of these is more conventional. Not that it
actually matters ;-)
> + compatible = "ibm, 440epx";
Stray space. And you need to say it is the PCI host, so something
like "ibm,440epx-pci".
Segher
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