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T2080QDS uboot hang at DIMM initializing

Question asked by Zitao Liu on Jul 1, 2016
Latest reply on Jul 1, 2016 by ufedor

Hello support team,


I have dozen of fsl_t2080qds board, this board has some problem when boot from uboot, it usually hang up at DIMM initializing, I know maybe this is a hardware issue, is there any workaround to boot the board up?


U-Boot 2014.07QorIQ-SDK-V1.7+g659b6a2 (Dec 13 2014 - 16:57:54)



CPU0:  T2080E, Version: 1.1, (0x85380011)

Core:  e6500, Version: 2.0, (0x80400120)

Clock Configuration:

       CPU0:1800 MHz, CPU1:1800 MHz, CPU2:1800 MHz, CPU3:1800 MHz,

       CCB:700  MHz,

       DDR:933.333 MHz (1866.667 MT/s data rate) (Asynchronous), IFC:175  MHz

       FMAN1: 700 MHz

       QMAN:  350 MHz

       PME:   700 MHz

L1:    D-cache 32 KiB enabled

       I-cache 32 KiB enabled

Reset Configuration Word (RCW):

       00000000: 0e070012 0e000000 00000000 00000000

       00000010: 66150002 00000000 ec027000 c1000000

       00000020: 00000000 00000000 00000000 000307fc

       00000030: 00000000 00000000 00000000 00000004

Board: T2080QDS, Sys ID: 0x28, Board Arch: V1, Board Version: A, boot from vBank0

FPGA: v11 (T1040QDS_2014_0318_1724), build 317 on Tue Mar 18 21:24:26 2014

SERDES Reference Clocks:

SD1_CLK1=156.25MHZ, SD1_CLK2=100.00MHz

SD2_CLK1=100.00MHz, SD2_CLK2=100.00MHz

I2C:   ready

SPI:   ready

DRAM:  Initializing....using SPD

DDR: failed to read SPD from address 81

Detected UDIMM

The choosen cas latency 29 is too large

Error: unsupported cas latency for mode register

Waiting for D_INIT timeout. Memory may not work.