Intermittent LS1012A boot failure
07-13-2020
12:22 PM
1,552 次查看
Hello,
We are seeing an intermittent case of boot failure.
Most boards do work. But when it does not boot. It throws:
NOTICE: DDR Init Done NOTICE: BL2: v1.5(release):LSDK-19.09-2-ga5d22266c NOTICE: BL2: Built : 17:57:22, Jun 22 2020 NOTICE: BL2: Booting BL31 and stops there. What could be the problem?
3 回复数
07-13-2020
07:18 PM
1,476 次查看
Doublecheck the design referring the QorIQ LS1012A Data Sheet and Design Checklist document.
Using a digital scope ensure that POR levels of all signals corresponds with the requirements of the notes in the Table 1. Pinout list by bus of the LS1012A Data Sheet.
Check power-on supplies ramp rate, reset signals timings and input clocks behaviour.
Use a debugger to check why the BL31 execution is interrupted.
Pay special attention to the DDR SDRAM operation.
07-14-2020
09:27 AM
1,476 次查看
