Nokia RX51 U-Boot USB support updates?

[Tom Rini]

On Sun, Jul 25, 2021 at 12:40:13PM +0200, Merlijn Wajer wrote:
> Hi Tom,
> 
> On 13/07/2021 22:33, Tom Rini wrote:
> > Hey all,
> > 
> > So, the DM_USB migration deadline issue has been addressed by the series
> > here:
> > https://patchwork.ozlabs.org/project/uboot/list/?series=252793&state=*
> > which splits out host and gadget support from the CONFIG_USB symbol
> > itself.  The migration deadline was for host support, and as noted, N900
> > is gadget only.  That particular issue is resolved.
> 
> Thanks a lot for doing that!
> 
> > But investigating that issue lead me to figure out some other problems,
> > that I do need someone to say how will be addressed.  Now that the other
> > board removal series has been applied, and then with:
> > https://patchwork.ozlabs.org/project/uboot/patch/20210708014348.4010-1-trini@konsulko.com/
> > also applied (for which the maintainer is happy to take), this brings
> > N900 as the last and only user of the "old" musb driver (the "new" musb
> > driver is now almost 9 years old) and also the last and only user of the
> > usbtty driver.
> > 
> > I suspect that moving to the "new" MUSB driver, for gadget only, and
> > with that enabling DM_USB_GADGET should be a mechanical affair, so long
> > as you can fit within the space constraints of the platform.  I'm not
> > immediately sure how hard it will be to update usbtty.c to modern gadget
> > APIs.  If there are size problems, then, well, we need solutions
> > proposed (it's possible that some of the usb-uclass.c code is host-only
> > and needs moving, but that likely won't stop gadget from needing it for
> > gadget related information, to bring up a specific example).
> > 
> > It's also likely that the MUSB support needs a little further
> > clean-up for supporting building as gadget-only when there's some common
> > code under a host-only check.
> > 
> > What I would like is for someone to step forward and say they'll pick up
> > this work.  Is there an immediate deadline? No.  I don't think that
> > would be helpful.  I'm not going to dictate how long it takes for
> > someone to do the work, that's for the person doing the work to say how
> > long they think it'll take.
> 
> I have a nokia serial device for the N900, which makes debugging
> significantly easier. I have some experience with u-boot (not that much
> with u-boot on omap though), but I imagine that Ivaylo and/or Pali can
> help me if I run into problems. So I'll try to pick this up.
> 
> As for a time frame, I imagine I should be able to find some time for
> this in the next couple of months.

A couple of months sounds great, thanks!

-- 
Tom
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