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Problems with Dual-Channel LPDDR2 on i.MX6Q and U-Boot

Question asked by Steffen Doster on Feb 14, 2018
Latest reply on Feb 15, 2018 by Yuri Muhin


I have problems getting a dual-channel LPDDR2 (2x512MB) configuration to work with i.MX6Q.

The board is currently running and works fine except that I only have access to half of the RAM (512MB).

I added my U-Boot cfg-file to this question.

I've set the BOOT_CFG3[5..4] to 01.

U-Boot is 2015-01


Some U-Boot definitions:

#define PHYS_SDRAM                             MMDC0_ARB_BASE_ADDR
#define PHYS_SDRAM_SIZE                   (1024u * 1024 * 1024)
#define CONFIG_NR_DRAM_BANKS      2



Can you help me? 

What other information do you need?