We have a custom board very similar to the imx6q Sabred reference design. We used 4 MT41K512M8 DDR chips。
When we perform DDR calibration, the following is displayed.
DDR TEST TOOL LOG |
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DDR Freq: 396 MHz ddr_mr1=0x00000000 |
It seems to be stuck here, and there is no output after that.How to solve this problem?
Hi kane
such kind of errors may point to fact that ddr interface is not working at all,
so one can check signals and power with oscilloscope using guidelines of
i.MX6 System Development User’s Guide
https://www.nxp.com/docs/en/user-guide/IMX6DQ6SDLHDG.pdf
Best regards
igor
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