Part Number: DRA821U-Q1
Hi,
SoC: DRA821U4TCBALMRQ1
LPDDR4: MT53E2G32D4DE-046 AAT:C
We ran LPDDR4 40 hrs test with following shell script in Linux:
#!/bin/bash
END=$(( $(date +%s) + 40*3600 ))
while [ $(date +%s) -lt $END ]; do
memtester 6G 1 | tee -a memtester.log
done
- at room temperature, no issue
- at -40C, it stopped running after 35hrs, failed
- at 85C, it stopped running after 20hrs, failed
it can re-run with cycle the power at that temperature, so it is not thermal protecion.
Q1: what is possible cause for DDR stopping running?
Q2: Optimized DDR configuration may help to solve the probelm ? how should we adjust the parameters? see attached current config file.0001-8GB-DDR-config.txt
Q3: Does TI have some app to check DDR optimization? since we do not have access points to check the signals eye diagram, so I am looking for other means to verify.