Hi there,

I'm working on a board that is based on a i.Mx6soloX it has a PFUZE3000 PMIC 
the u-boot version we're using is 2016-03. The PMIC is by default configured 
with a voltage for our DRAM that is too low. We've discovered that this is an 
issue with some boards some of the time. The voltage is just below the bare 
minimum so I think the board has no big issue most of the time.

I want to adjust the voltage in u-boot in time for the board bring up. I'm 
afraid that a lot of issues will disappear but our tests will not cover if the 
initialization is too late. I want to be absolutely certain that it happens on 
time before the memory initialization.

what is the place to do this?
Should I use an SPL bootloader?
Is power_init_board soon enough, or does code in this place require RAM?
Are there any other options?

Best regards,
Jeroen van der Laan


[ICT zorgt voor mensen]<https://www.zorg-en-ict.nl/default.aspx>


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