i want to change DRAM Rate to 3200MTS

[srinivas_123]

i am using nxp imx8mplus lpddr4 evk  and I build yocto 6.1 bsp version.

at the bootup DRAM rate is 4000MTS , I want to change DRAM rate to 3200MTS. how to do that . which file I have to modify.

[pengyong_zhang]

Hi, @srinivas_123 

You can use the RPA file set your expect DDR frequency point(3200MTz), and use the DDR Stress tool generate the relate timing.c file, use this file replace the origin timing.c file on uboot, then re-compile your uboot. and flash to your SD card or EMMC, then boot your board.

All the resource you can download from the below link:

https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/i-MX-8M-Family-DDR-Tool-Release/ta-p/110...

B.R