Hi,
I have a system with two PCIe hosts (both roots) accessing other devices through a PCIe switch (one of the hosts is behind a Non-transparent port).
Because of other reasons, I need to generate the PCIe reference clock externally to the Jetson module, so my question is, how can I make the PCIe links in the module work with an external clock signal? Is that even possible?
-Thanks.
I’m afraid Tegra doesn’t support this (PCIe reference clock being taken from the external sources) configuration.
Hi @vidyas thanks for your reply.
I was affraid of that… however, my understanding is that agents in a PCIe bus can actually use different reference clocks. Isn’t that right?
So then I could actually have the Jetson module and the PCIe switch connected to it working with different clocks and I would not need to use the same clock i both.
Do you think that is possible? Do you think any modifications/configurations are needed for that?
You are right that PCIe spec supports such configurations but as I mentioned, Tegra HW doesn’t support it.