Re: [PATCH 00/12] Add TH1520 USB support

[Icenowy Zheng]

在 2026-06-08一的 21:17 -0700，Drew Fustini写道：
> On Thu, May 07, 2026 at 04:16:58PM +0800, Icenowy Zheng wrote:
> > This patchset adds support for T-Head TH1520's USB functionality,
> > and
> > enabled it on the Lichee Pi 4A board.
> > 
> > The first 3 patches add support for the MISC subsystem clock
> > contrtoller, which contains some USB clocks.
> > 
> > The next 2 patches add support for the USB PHY of T-Head TH1520,
> > which
> > is a wrapped Synopsys USB3.0 FemtoPHY with a little integration
> > quirk;
> > the controller itself is a properly configured DWC3 controller with
> > sane
> > default register values set.
> > 
> > Then one patch adds the USB PHY and controller nodes to the TH1520
> > DTSI
> > file.
> > 
> > The remaining half of this patchset dedicates to enablement of USB
> > on
> > TH1520, because of the onboard hub of that board -- its USB2
> > signals are
> > behind a switch that needs to be toggled on, and Vbus supplies for
> > both
> > the hub itself and downstream ports are managed via I2C-expanded
> > GPIOs
> > (because the SoC does not have enough GPIO pins).
> 
> Hi, thanks for working on USB. I tried to apply it to next-20260601
> and
> several of the dts patches no longer apply cleanly. Could you rebase?

I think the reason is that one of the GPIO expansion chip is added to
the DT for enabling Wi-Fi.

I am not sure whether the next revision of this patchset will contain
all things, maybe I will split out at least the USB PHY part.

Thanks,
Icenowy

> 
> In the meantime, I'll apply to 7.1-rc7 for testing.
> 
> Thanks,
> Drew