Re: [PATCH 1/4] usb: gadget: udc: renesas_usb3: add sysfs "role" to set "b-device" mode

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Hi,

Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> writes:
> Sadly, to change the role ("host" and "peripheral") of USB3.0 DRD
> controller on R-Car Gen3, software has to set the DRD_CON register
> which is included in a usb3.0 peripheral controler's register.
> To simply implementation, the previous code always set peripheral mode
> as hardcoded. However, to support usb role swap in the future,
> the hardcoded is not good. So, this patch adds sysfs "role" to set
> the mode by a user.
> After applied this patch, since the DRD controller will act as host
> mode after probed, a user needs to change the mode via the sysfs.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>

in patch 3, you add extcon to monitor ID and VBUS pins. Do you really
need this sysfs file at all?

-- 
balbi



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