[PATCH/RFC 1/2] ARM: shmobile: kzm9g dts: Declare the full 512 MiB of RAM
geert+renesas at glider.be
Fri Nov 7 05:38:25 PST 2014
Traditionally, the first 16 MiB of RAM was reserved for the RT
processor. However, this is incompatible with CONFIG_AUTO_ZRELADDR=y,
which requires that the start address of physical memory is a multiple
of 128 MiB.
As CONFIG_AUTO_ZRELADDR=y is enabled for multi-platform kernels, declare
RAM to start at 0x40000000.
While at it, reclaim the last 8 MiB of RAM, too, so the full 512 MiB is
Signed-off-by: Geert Uytterhoeven <geert+renesas at glider.be>
- Why was the last 8 MiB of RAM not used?
- Is it an option to fix CONFIG_AUTO_ZRELADDR instead?
arch/arm/boot/dts/sh73a0-kzm9g.dts | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/sh73a0-kzm9g.dts b/arch/arm/boot/dts/sh73a0-kzm9g.dts
index 27c5f426d172f03d..e7dae01933a575f1 100644
@@ -21,6 +21,6 @@
device_type = "memory";
- reg = <0x41000000 0x1e800000>;
+ reg = <0x40000000 0x20000000>;
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