Re: [PATCH 2/2] usb: typec: Add onsemi FUSB15201 driver

[Bartosz Golaszewski]

On Wed, 2 Sep 2026 06:59:38 +0200, Shawn Guo
<shengchao.guo@xxxxxxxxxxxxxxxx> said:
> The FUSB15201 is a dual-port USB Type-C and Power Delivery controller
> which runs the Type-C state machine and the PD policy engine on an
> integrated microcontroller. The host only observes the resulting state
> and may ask for role swaps, so this is a plain Type-C class driver
> rather than a TCPC driven by the Type-C Port Manager.
>
> Register a Type-C port for each connector described in firmware, report
> attach and detach, orientation, power and data roles and the PD
> capability of the partner, and drive the USB role switch of the attached
> USB controller so that OTG role switching works. Data and power role
> swaps requested through sysfs are forwarded to the controller, which
> performs them asynchronously and reports the outcome as a port status
> interrupt.
>
> The controller exposes a per-port VBUS ADC reading, but the Type-C class
> has no VBUS attribute and nothing needs the value, so it is not read.
> PD messages, PDOs and alternate modes are not exposed by the hardware at
> all. The chip-wide MASTER_RESET command would drop both ports at once
> and has no caller, so it is left alone as well.
>
> Assisted-by: LLM
> Signed-off-by: Shawn Guo <shengchao.guo@xxxxxxxxxxxxxxxx>
> ---

Reviewed-by: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxxxxxxxx>