uboot porting to LPDDR2 on imx6ull

[vladimirchernin]

Hi!

Our board custom design based on mx6ullevk ref board working with DDR3 500mb 

we must use with LPDDR2 Alliance AS4C128M16MD2-25BCN  256mb 

in uboot source under /board/freescale/mx6ullevk i see imximage_lpddr2.cfg

seems to be lpddr2 DCD config

Can i use  imximage_lpddr2.cfg with my LPDDR2?

Thanks

Vladimir

[igorpadykov]

Hi Vladimir

for new board recommended to run ddr tester

i.MX6/7 DDR Stress Test Tool V2.80 

and populate imximage_lpddr2.cfg with new calibration coefficients

found from tester. Use

https://community.nxp.com/docs/DOC-333933 

Best regards
igor
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[vladimirchernin]

Hi Igor!

Please explain if i can use it for any of LPDDR2 from any manufacturer?

is it size dependent? 

my DDR is 256MB

Thanks

Vladimir

[igorpadykov]

no, for every new memory new calibartion coefficients should be found using ddr tester.

Best regards
igor