I am currently working on board bring-up for our custom design based on the i.MX6D.
I have tried the i.Mx6DQSDL DDR3 Script Aid [1] and got mixed results. It is needed to
select the ARM core speed. Does this mean I need to run the semi-automatic calibration
process for every ARM core speed I want to support? u-boot start with ~800 MHz but
later on the linux kernel could change the ARM core speed up to 1.2 GHz.
[1] https://community.freescale.com/docs/DOC-94917
已解决! 转到解答。
No, calibration is not needed to be run when you change ARM core speed. What kind of mixed results do you get?