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=20
U-Boot to do that.  So if you have a 36-bit U-Boot and a 32-bit DT, then=20
you will get a warning.  If you have a 36-bit U-boot and a 36-bit DT and a=
=20
32-bit kernel, you will get nothing.  But if you have a 32-bit U-boot and=20
a 32-bit DT and a 36-bit kernel, then that will work.  A 36-bit kernel=20
works with 32-bit *and* 36-bit DTs.  This is why a 36-bit kernel should be=
=20
the default.

--=20
Timur Tabi
Linux kernel developer at Freescale=