Re: [PATCH v4 5/5] phy: fsl-imx8mq-usb: keep PHY power domain runtime always-on for i.MX8MP
From: Xu Yang
Date: Mon Jun 08 2026 - 07:39:25 EST
On Fri, Jun 05, 2026 at 11:30:15AM -0400, Frank Li wrote:
> On Fri, Jun 05, 2026 at 07:13:06PM +0800, Xu Yang wrote:
> > From: Xu Yang <xu.yang_2@xxxxxxx>
> >
> > On i.MX8MP, the USB PHY has a dedicated power domain that was previously
> > never powered off at runtime. With the introduction of runtime PM support,
> > the power domain will be powered off if the device is runtime suspended,
> > which breaks USB wakeup functionality.
>
> Does it need depend on if device enable wakeup?
No. The wakeup is for system suspend. We handle the runtime case here.
Thanks,
Xu Yang