IMX8M ddr stress test tool error

[shuaiwang]

We designed a board with IMX8M and lpddr4 combo. When we used MX8_ddr_tool software to check our memory design, the test too report an error:

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ARM clock(CA53) rate: 800MHz
DDR Clock: 800MHz

============================================
DDR configuration
DDR type is LPDDR4
Data width: 16, bank num: 8
Row size: 14, col size: 10
Two chip selects are used
Number of DDR controllers used on the SoC: 1
Density per chip select: 256MB
Density per controller is: 512MB
Total density detected on the board is: 512MB
============================================

MX8M: Cortex-A53 is found

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============ Step 1: DDRPHY Training... ============
---DDR 1D-Training @800Mhz...
PMU: Error: CA Training Failed.
PMU: ***** Assertion Error - terminating *****
[Result] FAILED

Any one can tell me what's the error meaning?

[igorpadykov]

Hi shuai

please use MX8M_LPDDR4_register_programming_aid from link

i.MX 8M DDR Tool Release

Sect.4.2    Run DDR Calibration and generate DDR initial code

MX8M_DDR_Tool_User_Guide included in package suggests

steps if DDR calibration failed.

Best regards
igor
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