32GB DIMM MT72JSZS4G72LZ-1G9E2A7CE not working with T4240 Processor

[abhishekojha]

Hii All,

I am using 32GB DIMM per controller.

But Its showing "DIMM is not supported by this board".

I dnt know what is the issue with this DIMM as per the T4240 Datasheet,it supports "64 GB per controller, 192 GB per chip"

This is LRDIMM that is coming under registered_dimm.But as per the u-boot code its is going for unbuffered code i did changes not its detecting this RAM but now its is showing.

"Waiting for D_INIT timeout. Memory may not work"

Please let me know what is the exact configuration i need to add in ddr.h file.

static const struct board_specific_parameters rdimm0[] = {

        /*

         * memory controller 0

         *   num|  hi| rank|  clk| wrlvl |   wrlvl   |  wrlvl | cpo  |wrdata|2T

         * ranks| mhz| GB  |adjst| start |   ctl2    |  ctl3  |      |delay |

         */

        {4,  1350, 0, 5,     9, 0x08070605, 0x06070806,   0xff,    2,  0},

        {4,  1666, 0, 5,    11, 0x0a080706, 0x07090906,   0xff,    2,  0},

        {4,  1900, 0, 4,     8, 0x080a0a0c, 0x0e0e0f0a,   0xff,    2,  0},

        {4,  2140, 0, 5,    12, 0x0b090807, 0x080a0b07,   0xff,    2,  0},

        {2,  1350, 0, 5,     9, 0x08070605, 0x06070806,   0xff,    2,  0},

        {2,  1666, 0, 5,    11, 0x0a090806, 0x08090a06,   0xff,    2,  0},

        {2,  2140, 0, 5,    12, 0x0b090807, 0x080a0b07,   0xff,    2,  0},

        {1,  1350, 0, 5,     9, 0x08070605, 0x06070806,   0xff,    2,  0},

        {1,  1666, 0, 5,    11, 0x0a090806, 0x08090a06,   0xff,    2,  0},

        {1,  2140, 0, 4,    12, 0x0b090807, 0x080a0b07,   0xff,    2,  0},

        {}

};

My DIMM module is RANK 4

Let me know how can i solve this issue.

Thanks

Abhishek Ojha

[lunminliang · Accepted solution]

Hello abhishek ojha,

LRDIMM is not supported in T4240 or other QorIQ product.  See features for DDR controller in the device reference manual:

• Unbuffered and registered DIMMs

Have a great day,
Lunmin

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