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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




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.