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
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 ?
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
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
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
Vineeth wrote:
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
And for powerpc looks u-boot should initialize MPC107 and EUMB_ADDR should be
configured as well. And kernel doesn't reconfigure EUMB again. This is different
from original ppc implementation.
So I think you should check how u-boot did. Note not all targets use 0xfc000000
as EUMB_ADDR. At least for linkstation 0x8000000 is set as EUMB_ADDR. And so
maybe this value, 0xFC000000, should be one typo since kernel don't use this
node property as I previously said.
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 ?
How do u-boot resided on your target set EUMB_ADDR? Then you can migrate
kuroboxHG.dts with this base address.
Tiejun
On Tue, Aug 2, 2011 at 1:15 PM, tiejun.chen [off-list ref]wrote:
quoted
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