Agx-orin-uphy-lane-configuration 2 issue

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Orin
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  1. Is there a dts reference setting for configuration 2

Currently my settings are as follows, is it correct?

/ {
/* MGBE - A */
ethernet@6810000 {
status = “disable”;
}

/* C7 - PCIe switch */
pcie@141e0000 {
	status = "okay";

	phys = <&p2u_gbe_0>, <&p2u_gbe_1>, <&p2u_gbe_2>, <&p2u_gbe_3>,
	       <&p2u_gbe_4>, <&p2u_gbe_5>, <&p2u_gbe_6>, <&p2u_gbe_7>;
	phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3", "p2u-4",
		    "p2u-5", "p2u-6", "p2u-7";
};

/* C0 - BMC PCIe UPHY0, Mux with USB recovery */
pcie@14180000 {
	status = "okay";

	phys = <&p2u_hsio_0>;
	phy-names = "p2u-0";
};

}

2.Can uphy2:9 be divided into two groups pciex4 ??

set uphy 2:5 to C6
set uphy 6:9 to C10

image

/* C6 - PCIe switch */
pcie_c6_ep@141c0000 {
	status = "okay";

	phys = <&p2u_gbe_0>, <&p2u_gbe_1>, <&p2u_gbe_2>, <&p2u_gbe_3>;

	phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3";
};


/* C10 - PCIe switch */
pcie_c10_ep@140e0000 {
	status = "okay";

	phys = <&p2u_gbe_4>, <&p2u_gbe_5>, <&p2u_gbe_6>, <&p2u_gbe_7>;
	phy-names = "p2u-0", "p2u-1", "p2u-2", "p2u-3";
};
2

  1. Please read
    Jetson AGX Orin Platform Adaptation and Bring-Up — Jetson Linux Developer Guide documentation

  2. No, There is no “divide one into two case”.

4

Is this setting not configurable?
set uphy 2:5 to C6
set uphy 6:9 to C10

5

No, we only support totally same as either config #1 or config #2.

6

I see this alot in your documentation and on the forum(config 1 or config 2), what is meant by “support”. I see the https://connecttech.com/product/forge-carrier-for-nvidia-jetson-agx-orin/ .
It looks closer to config 3 (which is dropped in newer documents), 2 x MGBE, C7 as 1 lane PCIe, but also says it uses USB 3.2 (p0) from configuration 1 …
So far all the peripherals seem to work at first glance, how is that?

7

We don’t support configuration #3 because it is not validated.

The “support” here means we would guide you and guarantee you that would work. But for rest of those, we may not guarantee it would work. For example, some extra bugs may happen.

8

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