Hi Andy, On Wed, 25 Nov 2020 at 10:33, Andy Shevchenko <andy.shevche...@gmail.com> wrote: > > On Wed, Nov 25, 2020 at 7:11 PM Siarhei Siamashka > <siarhei.siamas...@gmail.com> wrote: > > On Wed, Nov 25, 2020 at 5:36 PM Andy Shevchenko > > <andy.shevche...@gmail.com> wrote: > > ... > > > Does this tablet / phone have an MMC slot? > > In fact it does. > > > 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? > > There are UARTs which are soldered with real devices connected. MMC > can be switched to GPIO, so it would be rather bitbanging with some > non-standard speed. > Does U-Boot have a bitbang UART driver?
I don't think so. Regards, Simon
