Re: Fwd: MPC7410 Linux Kernel

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 [off-list ref]wrote:

Vineeth wrote:

quoted

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.

quoted

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

quoted

get much support on ppc architecture we moved to powerpc.

Now we moved to powerpc architecture. We have some doubts on writing the

dts

quoted

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.

quoted

is our understanding correct ? should we introduce a new pci parent in

that

quoted

structure ?

So you can understand this after refer to the file,
arch/powerpc/boot/dts/mpc7448hpc2.dts.

Tiejun

quoted

 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

quoted

which gives better idea about the ranges property ?

Thanks
 Vineeth