On 12 July 2016 at 13:14, Steven Saunderson <[email protected]> wrote: > > > On Monday, 11 July 2016 22:18:49 UTC+10, Steven Saunderson wrote: > >> >> On Monday, 11 July 2016 21:32:36 UTC+10, Michal Suchanek wrote: > > >> >> Either way, you can try checking with a multimeter that the RX and TX >>> >>> pins of the serial port do not connect to the SD slot. Some tablets >>> use SD uart with extra pads .. >> >> This sounds very relevant. Thanks for the tip. I'll check it out. > > > The serial port is connected to the SD holder. RX connects to SD holder pin > 2 and TX connects to pin 5. This does allow someone to insert a connector > into the SD card holder and monitor the serial port output. But it does > make it impossible to use the serial port when booting from SD card. I'm > looking for a way to disconnect UART0 from the uSD socket but it doesn't > seem easy so far.
It's probably not possible. They use SD uart so you either get SD or uart. You can use FEL boot to test u-boot, kernel and devicetree until the system works reliably enough to boot without a console. HTH Michal -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
