[PATCH 0/5] edison: Support for writing an xFSTK image

[Simon Glass]

Hi Tom,

On Mon, 7 Sep 2020 at 08:12, Tom Rini <trini at konsulko.com> wrote:
>
> On Mon, Sep 07, 2020 at 07:57:12AM -0600, Simon Glass wrote:
> > Hi Andy,
> >
> > On Mon, 7 Sep 2020 at 02:04, Andy Shevchenko <andy.shevchenko at gmail.com> wrote:
> > >
> > > On Sat, Sep 5, 2020 at 6:23 AM Simon Glass <sjg at chromium.org> wrote:
> > > > On Fri, 4 Sep 2020 at 03:46, Andy Shevchenko
> > > > <andriy.shevchenko at linux.intel.com> wrote:
> > > > > On Thu, Sep 03, 2020 at 07:28:51PM -0600, Simon Glass wrote:
> > >
> > > > I do have a question though. How does the board decide whether to wait
> > > > for the xFSTK tool to connect? Sometimes when I reset it it, it does.
> > > > Sometimes it goes straight into receiving application. I am not
> > > > pressing any button other than reset. Once it makes it mind up, it
> > > > seems to stick to it until the power is removed? But it is powered by
> > > > USB too, so removing power is not so easy.
> > >
> > > It's a good question. I don't know the answer unfortunately. I think
> > > the parties that are involved here are PMIC and thus its firmware (I
> > > don't have access to it and even if ask will not get), DnX protocol,
> > > USB implementation on IFWI level (no access to me either). And I truly
> > > believe there are bugs in all of them, though I dunno if they are
> > > related to the above behaviour.
> > > Btw, pressing the reset button helps?
> >
> > Pressing reset either boots quickly or waits 10 seconds for xFSTK to
> > connect. It's like cracking a code and I haven't cracked it yet. I'll
> > have another go at some point, and maybe finally get this board into
> > my lab.
>
> On a tangent, when it comes to lab stuff I picked up
> https://www.yepkit.com/products/ykush a while back precisely for "device
> can be USB powered on purpose/accident" in order to have
> software-controlled USB ports I can bring up/down.

Actually that's very relevant. I did try that with Edison and it
definitely does power off the board now. I keep thinking with just a
bit more messing around I can nut it out. My first board turned out to
have a problem with the slider switch which could have been part of
the issue.

Regards,
Simon