ODMDATA meanings?

[chunsheng.geng]

I know the meanings of the ODMDATA bits[31:22] in the <…Xavier_Adaptation_Guide.pdf>.
Who can give me more information about the ODMDATA, especially bits[21:0] ?

I want to know how to allocate lanes for PCIe XBAR to controllers 5, if used it in PCIe x4.
And if I want C0/C4/C5 working in endpoint mode, how to config the ODMDATA?

@StephenWarren

When you flash the system using flash.sh, the ODMDATA value is set. One bit there (bit 12) determines whether PCIe controller C5 is configured as a root port or and endpoint. So, if your existing p2972-0000.conf.common says:

ODMDATA=0x9190000

… then change it to the following to set endpoint mode instead:

ODMDATA=0x9191000

[WayneWWW]

Hi,

Please note that we don’t suggest to change uphy mapping for Xavier. Devkit only supports one kind of usage.

As for C0/C4/C5 endpoint mode,

bit 26
PCIE C0 endpoint mode

bit 25
PCIE C4 endpoint mode

bit 12
PCIe C5 mode

In all these bits, 1 indicates the EP mode.