i.MX6Q LPDDR2 Config Script Question

peterpaquette — Fri, 17 Mar 2017 18:13:34 GMT

Basic Info

Custom board design based on NXP MCIMX6Q-Smart Device Board (Schematic # SPF-27516_C5)
Kernel version and/or BSP release used
1. MFGTool2 L4.1.15_2.0.0
2. BSP - 2.1 Krogoth
3. Uboot - v2016.07+gitAUTOINC+e6b42411ab-r0

MX6Q_MMDC_LPDDR2_Register_Programming_Aid_V1.3.xlsx

Device Information
Memory type:	LPDDR2
Manufacturer:	Micron - POP Package
Memory part number:	MT42L256M32D2LG-18 WTA
Density per chip select (Gb):	4
Number of Chip Selects per channel used²	2
Number of Channels used²	2
DRAM density per channel (Gb)	8
Total DRAM density (Gb)	16
Number of ROW Addresses²	14
Number of COLUMN Addresses²	10
Number of BANKS²	8
Bus Width (input 16, 32, or 64 bits)²	32
Clock Cycle Freq (MHz)³	533
Clock Cycle Time (ns)	1.876

See attached XLS

I have 2 x 1GB LPDDR 2 RAM as show above - I have attached MICRON data sheet.

When I try to run the .INC file (or converted to JLINK CONFIG) from the programming aid - the config file fails

either DCD Write Failed in ddr_stress_test_v2.60 or via JTAG (which just makes the processor un-haltable/unresponsive)

Please help me figure out what is wrong with my Memory setup script.

Original Attachment has been moved to: ddr-config.gdbinit.zip

Re: i.MX6Q LPDDR2 Config Script Question

Yuri — Wed, 22 Mar 2017 02:58:32 GMT

Hello,

Please use frequency 400 MHz for LPDDR2.

Also You may create request and provide schematic for more considerations.

Have a great day,

Yuri

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