Problem with LS101046a initial DDR4 UDIMM ERROR

[Lukelin]

My board start and print error message as below and halt, the UDIMM is MTA18ASF1G72AZ-2G3B1ZG ERROR message:

Authentication failure

NOTICE: UDIMM 18ASF1G72AZ-2G6B1

ERROR: Found training error(s): 0x2100

ERROR: Error: Waiting for D_INIT timeout.

ERROR: Writing DDR register(s) failed

ERROR: Programing DDRC error

ERROR: DDR init failed.

NOTICE: Incorrect DRAM0 size is defined in platfor_def.h

ERROR: mmap_add_region_check() failed. error -22

ERROR: mmap_add_region_check() failed. error -22

NOTICE: BL2: v1.5(release):v1.2-dirty

NOTICE: BL2: Built : 14:30:52, Mar 15 2021

ERROR: SD read error - DMA error = 10000000

ERROR: Read error = fffffffb

ERROR: BL2: Failed to load image (-2)

Authentication failure

thanks！

[Rusanya_T]

NOTICE: UDIMM 18ADF2G72AZ-2G6E1

NOTICE: 16 GB DDR4, 64-bit, CL=15, ECC on, CS0+CS1
NOTICE: BL2: v1.5(release):Devp-v0.0.0-dirty
NOTICE: BL2: Built : 13:41:56, Mar 14 2024
this is the output for long time in the tera term window which i have shown without booting the nxp board using sd card.how can i fix it

[Bulat]

As report mentions, the problem happens during DDR4 training procedure. This can be a result of hw or sw issues. In turn this can include incorrect DDR bus clock setting, incorrect schematics and/or layout of the DDR interface, power supply issues...

[Lukelin]

What is the error "training error(s): 0x2100" meaning?

[Lukelin]

The board works all rights until I disassemble  the OSC of  SD1_REFCLK2 and reassemble the OSC and the probem appear.  The SD1_REFCLK2 is normal 156.25MHz before disassembling and reassembling. I don't what is the matter.  

Would SD_REFCLK(AC amplitude and common Voltage) affect the DDR4 initial  training?

[Bulat]

SD_REFCLK AC amplitude and common Voltage can not affect the DDR4 initialization. Since the board worked fine before re-assembling, I can suppose that something else on the board could be damaged during re-assembling.

Try to check DDR4 clock (MCK) using a scope.

[zhy666]

i am dealing the same problem，but the error code is 0x3100

i have already check the power reset and clock，still cant find any clue

any suggestion