Hello everyone,
slowly I'm running mad with this:
I have a new custom board with i.MX6DL connected to two RAM-Chips:
I created the U-Boot RAM-cfg with the LPDDR2-Script-Aid-v0.06. (See attached *.cfg-File and Script-Aid-XLS).
I tested several RAM-definitions in the U-Boot Header-File: (CFG-File and Header-File both with Interleaving and Non-Interleaving-RAM). The fat text seem to work with an i.MX6Quad.
/* RAM Configs */
#undef INTERLEAVING_RAM
#ifdef INTERLEAVING_RAM
/* RAM Configs interleaving */
#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR
#define PHYS_SDRAM_SIZE (512u * 1024 * 1024)
#define CONFIG_NR_DRAM_BANKS 1
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM
#else
/* RAM Configs non interleaving */
/*#define CONFIG_NR_DRAM_BANKS 1
#define PHYS_SDRAM_1 MMDC0_ARB_BASE_ADDR
#define PHYS_SDRAM_1_SIZE (512u * 1024 * 1024)
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1
*/
#define CONFIG_NR_DRAM_BANKS 2
#define PHYS_SDRAM_1 MMDC0_ARB_BASE_ADDR
#define PHYS_SDRAM_2 MMDC1_ARB_BASE_ADDR
#define PHYS_SDRAM_1_SIZE (512u * 1024 * 1024)
#define PHYS_SDRAM_2_SIZE (512u * 1024 * 1024)
#define iomem_valid_addr(addr, size) (addr >= PHYS_SDRAM_1 && addr <= (PHYS_SDRAM_2 + PHYS_SDRAM_2_SIZE))
#define CONFIG_SYS_SDRAM_BASE PHYS_SDRAM_1#endif
And I tried to configure the <memory> entry in Devicetree with several configurations:
memory {
device_type = "memory";
reg = <0x10000000 0x40000000>; /* working with QUAD */
/*reg = <0x10000000 0x20000000 0x80000000 0x20000000>;*/
};
Every Test ends in the same result: Linux boots, but when I run <memtester> the whole System freezes including a Heartbeat-LED.
Somewhere I do something terribly wrong, but where? Why does it work with the Quad-Core but not with DualLite?
I think I don't understand CS0_END-Parameter! (And some other things, too.)
PLEAAAAAAAASE HELP!!
I can provide more Information if this helps.
Hi Steffen
was board able to pass latest ddr test
i.MX6/7 DDR Stress Test Tool V3.00
"memtester" issues may point to power supplies problems, like
instabilities, ripples, so may be recommended to check them using
Best regards
igor
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