[U-Boot] [linux-sunxi] Re: [PATCH] sunxi: set the default CPUx frequency of H5 to 816MHz

Ondřej Jirman megi at xff.cz
Wed Nov 1 02:10:24 UTC 2017


Hi,

Icenowy Zheng píše v St 01. 11. 2017 v 08:31 +0800:
> 
> And according to the Orange Pi PC2 and Prime schematics, they both
> start at 1.1V. (The Prime schematics even says "For H5 adjust
> VDD-CPUX to 1.1V).
> 

Orange Pi PC2 starts at the same voltage as Orange Pi PC. That is at
1.308V.

It can be calculated from 0.6×(1+11.8÷10) as per the values of Ru1/Ru2
resistors in the schema. It is also my experience of working with these
boards and writing the sy8106a driver.

regards,
  Ondrej

> > 
> > There's no need to enforce a SoC-wide change.
> > 
> > Maxime
> 
> 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 850 bytes
Desc: This is a digitally signed message part
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20171101/5dd9748f/attachment.sig>


More information about the U-Boot mailing list