Hi,

On Thu, Jan 08, 2026 at 12:25:12PM +0530, Anand Moon wrote:

Thanks for your review comments.
On Sat, 3 Jan 2026 at 19:35, Sebastian Reichel wrote:

quoted

On Sat, Jan 03, 2026 at 02:01:18PM +0530, Anand Moon wrote:

quoted

The USB host USB2 and USB3 on the Rock 5B, 5BP, and 5T is powered by the
USB_HOST_PWREN_H gpio pin which is used to enable vcc5v0_host host
regulator which ensures proper power sequencing and management for onboard
Double-USB-HOST.

Update the u2phy2_host node to reference the correct phy-supply.

Cc: Sebastian Reichel <redacted>
Signed-off-by: Anand Moon <redacted>
---

u2phy2_host is connected to an onboard USB hub chip, which is
powered by &vcc5v0_sys as the comment says.

You can see this on page 9 of the v1.45 ROCK 5B schematics (page
name USB2HUB). The usb hub chip uses VCC5V0_SYS + VCC_3V3_S0 and is
connected to USB20_HOST0_DP, USB20_HOST0_DM. The related USB
controller for that in the upstream DT is &usb_host0_ehci, which
in turn is using &u2phy2_host. Thus at least for the ROCK 5B the
existing DT is correct. Properly describing the downstream port
VBUS regulator would require something like the following series:

https://lore.kernel.org/all/20250911-v6-16-topic-usb-onboard-dev-v4-0-1af288125d74@pengutronix.de/ (local)

Actually, the Radxa Rock 5 B doesn't have an onboard USB hub chip.

Seriously? I provided the exact page for the hub chip in the
schematics and it's easily visisble in lsusb too.

I don't want to waste my time and expect a certain level of quality
and this is certainly way below it...

-- Sebastian