Re: [PATCH v2 3/3] riscv: dts: spacemit: enable USB3 on OrangePi RV2

Yixun Lan
2026-04-03T00:16:46Z

Hi Chukun,

On 21:06 Thu 02 Apr , Chukun Pan wrote:
> Hi,
>
> > Can you work with Han for adding USB support[1]? this will simply
> > distribute our effort, and make the review process even harder
>
> Sorry, I didn't consider this.
> Could you drop this patch ([PATCH v2 3/3]...)?
> The first two patches should not cause conflicts.
>
> > > + vbus-supply = <&vcc5v0_usb30>;
> > IMO, the vbus doesn't directly tie to dwc3 host, but to HUB's port
> > so I think this is still wrong, although it may work on the board..
>
> We can switch to the onboard_usb_dev driver after it's merged.
Sure, I think that's a more elegant solution

> Keeping vbus always-on may cause unnecessary waste.
> I won't insist if you think this is wrong.
Currently either way isn't ideal.. but binding vbus to the host is kind
of acceptable to me, if no ojection, I can take this, then we can adjust
later once the USB HUB vbus support[1] landing in tree
https://lore.kernel.org/all/20260223-v6-16-topic-usb-onboard-dev-v5-0-28d3018a8026@pengutronix.de/ [1]

btw, Could you take a look at Han's patch? if you have final say?
https://lore.kernel.org/spacemit/20260403000539-GKB1016296@kernel.org/ [2]

I'd like to push this series to v7.1, it's almost running out of time..

>
> Thanks,
> Chukun

--
Yixun Lan (dlan)