From: Siarhei Siamashka <siarhei.siamashka@gmail.com>
To: u-boot@lists.denx.de
Subject: early stage debugging on a real product
Date: Wed, 25 Nov 2020 19:11:26 +0200 [thread overview]
Message-ID: <CACY+gR0TdgcVK+OhRhROOotNxKXu2jCxMdUUEXpuAhdGUNcdoQ@mail.gmail.com> (raw)
In-Reply-To: <CAHp75VfS+G-1C-dfe=wYq6acuDswiqzs8fS4NakgoXdatyfPdw@mail.gmail.com>
On Wed, Nov 25, 2020 at 5:36 PM Andy Shevchenko
<andy.shevchenko@gmail.com> wrote:
>
> On Wed, Nov 25, 2020 at 5:23 PM Simon Glass <sjg@chromium.org> wrote:
> > On Wed, 25 Nov 2020 at 08:07, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
> > > On Wed, Nov 25, 2020 at 4:50 PM Simon Glass <sjg@chromium.org> wrote:
> > > > On Wed, 25 Nov 2020 at 06:26, Andy Shevchenko <andy.shevchenko@gmail.com> wrote:
>
> > > > I think you should be more worried about the UART!
> > >
> > > How? There is no UART (there are ports, but all of them are occupied
> > > by real devices wired up). The only connector is microB and getting
> > > USB to work in a gadget mode seems to me a harder task to achieve.
> >
> > The board designers should be severely punished. Do you have post codes?
> >
> > Some boards have an FTDI chip to do the USB/serial conversion but I
> > guess your one does not.
>
> It's not a board. As I stated in the subject line it's a real product
> (tablet / phone).
Does this tablet / phone have an MMC slot? For example, on all
Allwinner tablets it is technically possible to use MMC pins for UART
via a different non-standard pin mux setup and a breakout board:
https://linux-sunxi.org/MicroSD_Breakout
https://linux-sunxi.org/File:MSI_Primo81_and_MicroSD_breakout.jpg
Also are you sure that there are really no UART pads on the PCB to
solder some wires if you disassemble your tablet / phone?
next prev parent reply other threads:[~2020-11-25 17:11 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-23 14:05 early stage debugging on a real product Andy Shevchenko
2020-11-23 19:00 ` Andy Shevchenko
2020-11-23 19:08 ` Simon Glass
2020-11-23 19:18 ` Andy Shevchenko
2020-11-23 19:49 ` Andy Shevchenko
2020-11-24 13:58 ` Andy Shevchenko
2020-11-24 16:53 ` Simon Glass
2020-11-24 19:47 ` Andy Shevchenko
2020-11-24 23:41 ` Simon Glass
2020-11-25 11:26 ` Andy Shevchenko
2020-11-25 13:26 ` Andy Shevchenko
2020-11-25 14:49 ` Simon Glass
2020-11-25 15:08 ` Andy Shevchenko
2020-11-25 15:23 ` Simon Glass
2020-11-25 15:36 ` Andy Shevchenko
2020-11-25 15:45 ` Simon Glass
2020-11-25 16:59 ` Andy Shevchenko
2020-11-25 17:03 ` Simon Glass
2020-11-25 20:43 ` Andy Shevchenko
2020-11-25 15:56 ` Ovidiu Panait
2020-11-25 16:09 ` Andy Shevchenko
2020-11-25 17:11 ` Siarhei Siamashka [this message]
2020-11-25 17:34 ` Andy Shevchenko
2020-11-25 18:06 ` Simon Glass
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