I have a dual-port USB PD controller on a custom carrier board running Jetpack 6.1 / L4T 36.4.0. My SoM is an Orin NX 16GB.
An excerpt of my DTS is provided below, but the summary is that I have used vbus-supply = <&vdd_5v0_sys>; in all the padctl@3520000/ports/usb2-* nodes.
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#include "tegra234-p3768-0000+p3767-0000.dts"
#include "nv-platform/tegra234-p3768-0000+p3767-xxxx-nv-common.dtsi"
#include <dt-bindings/gpio/tegra234-gpio.h>
#include <dt-bindings/usb/pd.h>
/ {
compatible = "nvidia,p3768-0000+p3767-0000", "nvidia,p3767-0000", "nvidia,tegra234";
aliases {
/delete-property/ fusb_p0;
/delete-property/ typec_p0;
};
bus@0 {
/* SoM I2C0 */
i2c@c240000 {
/* Delete Nano devkit's USB-C PD controller node. */
/delete-node/ fusb301@25;
};
/* SoM I2C1, Linux i2c-7 */
i2c@c250000 {
status = "okay";
typec@21 {
status = "okay";
compatible = "ti,tps6598x";
reg = <0x21>;
interrupt-parent = <&gpio_aon>;
interrupts = <TEGRA234_AON_GPIO(CC, 3) IRQ_TYPE_LEVEL_LOW>;
interrupt-names = "irq";
connector {
compatible = "usb-c-connector";
label = "USB-C";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
usb_conn0_hs_ep: endpoint {
remote-endpoint = <&usb_conn0_hs>;
};
};
port@1 {
reg = <1>;
usb_conn0_ss_ep: endpoint {
remote-endpoint = <&usb_conn0_ss>;
};
};
};
};
};
typec@25 {
status = "okay";
compatible = "ti,tps6598x";
reg = <0x25>;
interrupt-parent = <&gpio_aon>;
interrupts = <TEGRA234_AON_GPIO(CC, 3) IRQ_TYPE_LEVEL_LOW>;
interrupt-names = "irq";
connector {
compatible = "usb-c-connector";
label = "USB-C";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
usb_conn1_hs_ep: endpoint {
remote-endpoint = <&usb_conn1_hs>;
};
};
port@1 {
reg = <1>;
usb_conn1_ss_ep: endpoint {
remote-endpoint = <&usb_conn1_ss>;
};
};
};
};
};
};
xusb_padctl: padctl@3520000 {
status = "okay";
ports {
/* Port 2: Recovery */
usb2-0 {
status = "okay";
mode = "otg";
usb-role-switch;
role-switch-default-mode = "device";
vbus-supply = <&vdd_5v0_sys>;
// Remove Nano devkit port node
/delete-node/ port;
port {
usb_conn1_hs: endpoint {
remote-endpoint = <&usb_conn1_hs_ep>;
};
};
};
usb2-1 {
status = "okay";
mode = "host";
vbus-supply = <&vdd_5v0_sys>;
port {
usb_conn0_hs: endpoint {
remote-endpoint = <&usb_conn0_hs_ep>;
};
};
};
/* M.2 Key-E */
usb2-2 {
status = "okay";
mode = "host";
vbus-supply = <&vdd_5v0_sys>;
};
usb3-0 {
status = "okay";
nvidia,usb2-companion = <1>;
port {
usb_conn0_ss: endpoint {
remote-endpoint = <&usb_conn0_ss_ep>;
};
};
};
usb3-1 {
status = "okay";
nvidia,usb2-companion = <0>;
port {
usb_conn1_ss: endpoint {
remote-endpoint = <&usb_conn1_ss_ep>;
};
};
};
}; /* ports */
}; /* padctrl */
}; /* bus@0 */
};
Every time I run modprobe -r tps6598x, I see:
[ 2616.629431] VDD_5V0_SYS: Underflow of regulator enable count
I found someone here in the forums reported a similar issue with Jetpack 6.0. However I only see this error message printed once, not repeated like they did. I will try the patch mentioned here and see if that helps: AGX Orin custom carrier board otg issue - #25 by WayneWWW
Thanks!