[U-Boot] Support for i.MX7ULP rev B0

[Peng Fan]

> Subject: Re: Support for i.MX7ULP rev B0
> 
> Hi Peng,
> 
> On Thu, Jul 18, 2019 at 10:48 PM Peng Fan <peng.fan at nxp.com> wrote:
> 
> > There is a downstream patch to gate off APll_PFD1/2/3, with that patch
> > applied you will not see kernel warning.
> >
> > i.MX7ULP: change USDHC clock rate
> >
> >     Change USDHC0 and USDHC1 per clock source from APLL_PFD1,
> >     and set the APll_PFD1 clock rate to 352.8MHz.
> >
> >     Also gate off APll_PFD1/2/3 before boot OS, otherwise set
> >     the clock rate of APll_PFD1/2/3 during OS boot up will triger
> >     some warning message.
> 
> Thanks for the clarification. We can upstream this one later then.
> 
> Any insight about the "ERROR: reserving fdt memory region failed" messages?

It is because the rpmsg reserved region in Linux dts conflicts with uboot region.
It not impact Linux boot.

Regards,
Peng.

> 
> Thanks