Re: [PATCH v3 0/3] usb: add K1 USB2 PHY and generic DWC3 support

[Yixun Lan <dlan@kernel.org>]

Hi  Hung-Chun,

On 18:59 Fri 23 Oct     , Hung-Chun Tseng wrote:
> Hi Dave,
> 
> I tested v3 on a Milk-V Jupiter, on top of main 903c9578e plus a local
> patch that adds the Jupiter DT to the FIT.
> 
> USB 3 works without your combo PHY series. A SanDisk stick shows up at
> 5 Gb/s, and fatls and a 32 MiB usb read work.
> 
> But it only works after I power the onboard hub by hand. The Jupiter
> ports sit behind a VIA VL817 hub (usb2109,2817 and usb2109,817). Its
> vdd-supply (GPIO123) is not always-on and its reset is GPIO124. U-Boot
> has no onboard hub support for the VL817, so "usb start" finds only the
> root hub. After "gpio set GPIO123; gpio set GPIO124; usb reset" the hub
> and the stick show up. The BPI-F3 DT has the same hub, so it probably
> needs this too.
> 
..
> I don't think this should block the series. 

Right, I've merged this series and sent a PR, see 
https://lore.kernel.org/all/20261023063727-GKA184714@kernel.org/

>I can send a follow-up that
> adds the VL817 to usb_onboard_hub.c and enables USB_ONBOARD_HUB for K1.
> 

Yes, onboard hub is right way to go, should be quite straightforward,
I know Zixian (Cc him) is working on a patch for it which almost ready

Maybe you can co-work with him?

-- 
Yixun Lan (dlan)