Re: [PATCH 2/2] usb: dwc3: pci add property to allow user space role switch

[Shah, Nehal-bakulchandra]

Hi
On 8/24/2021 1:49 PM, Felipe Balbi wrote:
> Nehal Bakulchandra Shah <Nehal-Bakulchandra.shah@xxxxxxx> writes:
>
> > For AMD platform there is a requirement to enable user space role
> > switch from host to device and device to host by means of running
> > following commands.
> >
> > HOST:   echo host > /sys/class/usb_role/dwc3.0.auto-role-switch/role
> > DEVICE: echo device > /sys/class/usb_role/dwc3.0.auto-role-switch/role
>
> A more important question that needs to be answered: why?
Our customer platform is not completely capable of OTG i.e with type C 
controller it does not have PD to support role switching. Hence, they 
have script which triggers the role switch based on ACPI/EC interrupt.

Regards
Nehal Shah