i.MX8M Mini / i.MX8MQ: reset DDRC for LPDDR

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i.MX8M Mini / i.MX8MQ: reset DDRC for LPDDR

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Niebel-TQ
Contributor III

Hello,

is there a way to reset and reinitialize the DDR controller?  DRAM type is LPDDR4.

Our goal: We try to implement a solution for a family of boards with different size of RAM assembled.

To get reproducible results we seek for a solution to reset the RAM and der Controller before trying the next configuration. We did not found the right register / sequence in the DDR Controller / Phy documentation.

Thanks in advance

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JorgeCas
NXP TechSupport
NXP TechSupport

Hello,

According to the reference manual of both MPU, the DDRC just has ZQ reset but there is no documented a reset for the entire module, so it seems that it is necessary a system-reset/power-on-reset to reset DDRC.

Best regards.

Jorge. 

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