Sometimes trouble booting from EMMC

Banana Pi BPI-R4/BPI-R3 Mini/BPI-R3/BPI-R64/BPI-R2
1

Hi, I have trouble with booting from EMMC.

Sometimes it starts well, but sometimes not.

I have to remove power suply more than 3 times before BPI will boot correctly.

Also when I reboot it sometimes stuck immediately after it shows (white or cyan color).

Any idea? Thanks!

2

Is this matching your issue: https://github.com/BPI-SINOVOIP/BPI-R2-bsp/issues/13 ?

3

How can I get u-boot log?

4

with debug-uart…need a serial2usb cable connected to debug-pins

5

I have made one by Arduino board and now all works fine. Starange! I will try put it together into the box again. And we will see.

Here is my boot log:

6

Also in the box!

La La La, I’m probably crazy! :frowning:

I’ll try to monitor it, but it looks stable now. :slight_smile:

7

be careful…arduino is 5v level…banana pi is 3v3

8

Thank you very much!