Rockchip USB

USB 2.0/3.x controllers, OTG/host roles, Type-C and VBUS power on Rockchip.

Rockchip SoCs use DWC3 controllers for USB 3 (often with a USB/DP combo PHY on Type-C ports) and EHCI/OHCI for USB 2 host. Typical bring-up issues are dr_mode, VBUS regulator enables, PHY nodes left disabled, and Type-C controller (e.g. FUSB302) configuration.

Key points

Set dr_mode = "host", "peripheral" or "otg" to match the port's real role.
Enable the matching u2phy / usbdp_phy / combphy node, not only the controller.
A USB 3 port that only works at USB 2 speed usually means the SuperSpeed PHY or lane routing is wrong.

References

Kernel devicetree bindings

USB guides

Hardware DebuggingIntermediate

Rockchip USB Device Not Detected: Host, OTG, VBUS and PHY Checklist

A USB port that shows nothing in lsusb usually has a role, power or PHY problem. Here is the order to check them on Rockchip SoCs.

6 min read · RK3588, RK3588S, RK3576

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