Re: [PATCH RFC 0/2] usb: typec: qcom: Add shared USBIN VBUS detection via GPIO

From: Bryan O'Donoghue

Date: Wed Mar 11 2026 - 10:54:03 EST


On 08/03/2026 23:20, Alexander Koskovich wrote:
The ASUS ROG Phone 3 has two USB-C ports whose VBUS lines are both
wired to the single USBIN input on the PM8150B PMIC. This means the
Type-C port controller cannot distinguish which port is providing
VBUS, causing one port to be unusable when the other has VBUS present
from a charger or PC.

Hrmm..

If you have a GPIO for VBUS detect then who is sourcing VBUS in host mode ?

There should be a GPIO to switch it on aswell ? And in this case both ports will become "hot" at the same time.

How does VBUS work in host mode here ?

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bod