Fwd: MPC7410 Linux Kernel

[Vineeth]

Thanks for the reply.

We were referring kuroboxHG.dts which uses Sandpoint architecture; which is
almost same as ours.

1. one doubt in kuroboxHG is the ranges property in SOC node says EUMB is at
0xFC00_0000; and as per the datasheet of mpc107, the open pic address will
be EUMB_BASE + 0x40000; but in kurobox its given as 0x80040000;

2. We know that our UART is mapped at address 0xDB00_0100; which is
connected in a PCI-LOCAL bridge whose base is at 0xDB00_0000
How can i represent these things in dts ? Can the RANGES property of PCI
node can mention this ?







On Tue, Aug 2, 2011 at 1:15 PM, tiejun.chen <tiejun.chen at windriver.com>wrote:

> Vineeth wrote:
> > Hi,
> >
> > We are trying to port  linux 2.6.38 on MPC7410 based board (This is a
> > preparatory design by our customer)
> >
> > System architecture is as follows,
> >
> > MPC7410 <=> MPC107 <=> PCI_to_LOCAL(plx9052) <=> UART
>
> MPCXXX should be compatible with TSIXXX. So you can refer to mpc7448_hpc2.
>
> >
> > Previously we were using ppc architecture and we had some issues with
> > page_init() functions; which may be because of our configuration.As we
> didnt
> > get much support on ppc architecture we moved to powerpc.
> >
> > Now we moved to powerpc architecture. We have some doubts on writing the
> dts
> > file. Please find the dts file attached.
> >
> > when we checked the legacy_serial.c file, we found that
> > legacy_serial_parents not expecting a pci-local or a pci bridge as
> parent.
> > is our understanding correct ? should we introduce a new pci parent in
> that
> > structure ?
>
> So you can understand this after refer to the file,
> arch/powerpc/boot/dts/mpc7448hpc2.dts.
>
> Tiejun
>
> >
> >  We are confused about writing the ranges property of PCI node.we were
> > referring booting_without_of doc but didnt get much info. Is there any
> file
> > which gives better idea about the ranges property ?
> >
> > Thanks
> >  Vineeth
>
>
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