diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 49d993c..62cd2fac 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -948,6 +948,8 @@
 
 source "arch/arm/mach-ixp4xx/Kconfig"
 
+source "arch/arm/mach-keystone/Kconfig"
+
 source "arch/arm/mach-kirkwood/Kconfig"
 
 source "arch/arm/mach-ks8695/Kconfig"
@@ -1560,6 +1562,7 @@
 	int
 	default 1024 if ARCH_SHMOBILE || ARCH_TEGRA
 	default 512 if SOC_OMAP5
+	default 512 if ARCH_KEYSTONE
 	default 392 if ARCH_U8500
 	default 352 if ARCH_VT8500
 	default 288 if ARCH_SUNXI