[PATCH] powerpc/85xx: allow CONFIG_PHYS_64BIT to be selectable

[Li Yang-R58472]

> Subject: Re: [PATCH] powerpc/85xx: allow CONFIG_PHYS_64BIT to be
> selectable
> 
> Li Yang-R58472 wrote:
> 
> > Even though the user still need to know the addressing mode that
> > u-boot is using.  It won't work if the addressing mode of u-boot and
> > device tree are different.
> 
> U-Boot will tell the user if the DT does not match.  I added code to U-
> Boot to do that.  So if you have a 36-bit U-Boot and a 32-bit DT, then
> you will get a warning.  If you have a 36-bit U-boot and a 36-bit DT and
> a 32-bit kernel, you will get nothing.  But if you have a 32-bit U-boot
> and a 32-bit DT and a 36-bit kernel, then that will work.  A 36-bit
> kernel works with 32-bit *and* 36-bit DTs.  This is why a 36-bit kernel
> should be the default.

The mpc85xx_defconfig does include silicons with e500v1 core which doesn't have the 36-bit support.  Won't enabling 36-bit support by default break the support for them?

- Leo