AnsweredAssumed Answered

imx8mq 4GB Uboot BootUp Fail

Question asked by Hanson Chung on Oct 31, 2019
Latest reply on Nov 4, 2019 by Yuri Muhin

hi all

 

 

 

i pushed the 4GB on the EVK but hangup

 

like this 

 

 

U-Boot 2018.03-imx_v2018.03_4.14.98_2.1.0+gb9dc0acc7a (Oct 31 2019 - 07:46:08 +0000)

 

CPU: Freescale i.MX8MQ rev2.1 1500 MHz (running at 1000 MHz)
CPU: Commercial temperature grade (0C to 95C) at 43C
Reset cause: POR
Model: Freescale i.MX8MQ EVK
DRAM: 

 

 

 

no any message after "DRAM:"

 

 

 

i modified  include/configs/imx8mq_evk.h

 


-#define PHYS_SDRAM_SIZE 0xC0000000 /* 3GB DDR */
+#define PHYS_SDRAM_SIZE 0x100000000 /* 4GB DDR */

 

 

Yocto Version :L4.14.98-2.1.0

 

and i used DDR Tools to gen lpddr4_timing.c to the Uboot compile.

 

the Calibration is pass and the Stress Test is pass in mscale DDR tool.

Outcomes