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Hello,
I am bringing up a custom board based on the i.MX8M Plus (MIMX8ML8DVNLZAB) with Micron LPDDR4 memory (MT53E256M32D2FW-046 AIT).
I generated the DDR settings with the Config Tools for i.MX and integrated the generated files into U-Boot. During boot I currently receive:
U-Boot SPL 2024.04
DDRINFO: start DRAM init
DDRINFO: DRAM rate 4000MTS
Training FAILEDI would like to perform DDR calibration and stress testing.
However, my custom board does not have a USB OTG port available, so I cannot use the normal USB HID download method described in the DDR Tool User Guide.
I do have:
- Segger J-Link Plus V10
- JTAG access working correctly
- UART console available
- Connection to the Cortex-M7 through J-Link is successful
In the MSCALE DDR Tool I can only select SERIAL as connection type. I do not see a JTAG option.
My questions are:
- Is it possible to perform DDR calibration and stress testing on an i.MX8MP custom board using a Segger J-Link Plus V10?
- Is there a JTAG version of the DDR Stress Test Tool available for i.MX8MP?
- Can the DDR test image be loaded through J-Link instead of USB HID?
- Is there an alternative procedure recommended by NXP for custom boards without a USB download interface?
Thank you for your support.
Hello,
No we do not offer other kind of sollutions aside from serial download for DDR tunning, we highly recommend customer that for new designs in the initial development to have this interface available. This because for almost all our tools it is a hard requirement.
Best regards/Saludos,
Aldo.