04-11-2021, 01:13 PM
My device powers on when I connect it to a USB charger and I get the same information output to the UART as when I power on with the battery: the red LED comes on and stays lit while U-Boot is probing the AXP803.
NOTE: I have performed this test with the battery removed.
From this information is it safe to conclude that the AXP803 chip is still operational?
This would bring me back to my first hypothesis that there is something wrong with the U-Boot initialization. From what I can understand from the serial output, the system is starting with the Boot ROM, then successfully running the secondary program loader, then the ARM trusted firmware, but it's hanging on BL33 (U-Boot proper) before even attempting to load Linux.
Thanks,
M
NOTE: I have performed this test with the battery removed.
From this information is it safe to conclude that the AXP803 chip is still operational?
This would bring me back to my first hypothesis that there is something wrong with the U-Boot initialization. From what I can understand from the serial output, the system is starting with the Boot ROM, then successfully running the secondary program loader, then the ARM trusted firmware, but it's hanging on BL33 (U-Boot proper) before even attempting to load Linux.
Thanks,
M
