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

[Felipe Balbi]

"Shah, Nehal-bakulchandra" <nehal-bakulchandra.shah@xxxxxxx> writes:

> 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.

sounds like some generalized version of this text should be added to
commit log.

-- 
balbi