[PATCH] powerpc/85xx: do not force PHYS_64BIT on the P1022DS

[Timur Tabi]

Kconfig option PHYS_64BIT sets the size of phys_addr_t to 64 bits, which
allows support for a 36-bit physical address space.  With this option, the
kernel can support more than 2GB of RAM, but the larger address size
impacts performance slightly.

By including "select PHYS_64BIT" in the Kconfig for a particular board,
that option is forced enabled, and it becomes impossible to create a 32-bit
kernel.  Instead, we should depend on the defconfig to enable this option.
We still build a 36-bit kernel by default, and we also allow users to build
32-bit kernels if they really want.

Signed-off-by: Timur Tabi <timur at freescale.com>
---
 arch/powerpc/platforms/85xx/Kconfig |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/arch/powerpc/platforms/85xx/Kconfig b/arch/powerpc/platforms/85xx/Kconfig
index 12f5932..dddada4 100644
--- a/arch/powerpc/platforms/85xx/Kconfig
+++ b/arch/powerpc/platforms/85xx/Kconfig
@@ -80,7 +80,6 @@ config P1010_RDB
 config P1022_DS
 	bool "Freescale P1022 DS"
 	select DEFAULT_UIMAGE
-	select PHYS_64BIT	# The DTS has 36-bit addresses
 	select SWIOTLB
 	help
 	  This option enables support for the Freescale P1022DS reference board.
-- 
1.7.3.4