AnsweredAssumed Answered

P2020RDB-PCA U-boot Problem

Question asked by Hu Yang on Dec 1, 2013
Latest reply on Dec 10, 2013 by Adrian Stoica

Hi there,


We got a problem that uboot of our board seems not work right.

Our host system is Centos 6.3, and we use minicom to connect our board through 232 port.

But it seems have some problem with the message print as below:


U-Boot 2011.12-00025-gc6d9d50 (Mar 17 2013 - 11:09:26)

CPU0:  P2020, Version: 2.1, (0x80e20021)

Core:  E500, Version: 5.1, (0x80211051)

Clock Configuration:

CPU0:1000 MHz,

CPU1:1000 MHz,

CCB:500  MHz,

DDR:400  MHz (800 MT/s data rate) (Asynchronous),

LBC:31.250 MHz

L1:    D-cache 32 kB enabled

         I-cache 32 kB enabled

Board: P2020RDB CPLD: V4.1 PCBA: V4.0

Error reading i2c boot information!

I2C:   ready                                                                   

SPI:   ready                                                                   

DRAM:  DDR: failed to read SPD from address 82                                 

Error in DDR bus width configuration!                                          

16 MiB (DDR2, 64-bit, CL=0.5, ECC off)           


And the printing is just stop there, it seems that DDR3 on board is not detected.

The uboot file is fine that we got it right on another RDB borad in July, is this a hardware issue?

Is there anyone got similar problem? Please help!

Thanks in advance.