Whether the DDR calibration stress tool can support 200MHz?

[caritzhu]

Our project need to set DDR clock as 200MHz on the iMX6Q board, but I find the DDR calibration stress tool can only support calibration between 300Mhz and 528Mhz. How can I calibrate the DDR parameter under 200Mhz DDR clock?

[Yuri]

Hello,

  200 MHz is relatively low frequency for DRAM, and calibration is not necessary.

Have a great day,

Yuri

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[caritzhu]

Thank you for your reply, so I need to turn off the calibration when uboot startup? or just to ignore the DDR calibration parameter.

Thank you

Carit

[Yuri]

You may find (or test) experimentally calibration parameters, setting manually,
which will be used  in Your boards. 

Regards,

Yuri.