Messages in this thread | ![/](/images/icornerl.gif) | | From | Felipe Balbi <> | Subject | Re: [PATCH 2/2] usb: dwc3: pci add property to allow user space role switch | Date | Tue, 24 Aug 2021 19:17:46 +0300 |
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"Shah, Nehal-bakulchandra" <nehal-bakulchandra.shah@amd.com> writes:
> Hi > On 8/24/2021 1:49 PM, Felipe Balbi wrote: >> Nehal Bakulchandra Shah <Nehal-Bakulchandra.shah@amd.com> 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
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