diff --git a/arch/arm/boards/phytec-phycore-am335x/lowlevel.c b/arch/arm/boards/phytec-phycore-am335x/lowlevel.c
index 855b6924f..afb331eae 100644
--- a/arch/arm/boards/phytec-phycore-am335x/lowlevel.c
+++ b/arch/arm/boards/phytec-phycore-am335x/lowlevel.c
@@ -81,7 +81,7 @@ static noinline void pcm051_board_init(void)
 
 	fdt = __dtb_am335x_phytec_phycore_start - get_runtime_offset();
 
-	barebox_arm_entry(0x80000000, SZ_512M, fdt);
+	barebox_arm_entry(0x80000000, SZ_256M, fdt);
 }
 
 ENTRY_FUNCTION(start_am33xx_phytec_phycore_sram, bootinfo, r1, r2)
@@ -106,5 +106,5 @@ ENTRY_FUNCTION(start_am33xx_phytec_phycore_sdram, r0, r1, r2)
 
 	fdt = __dtb_am335x_phytec_phycore_start - get_runtime_offset();
 
-	barebox_arm_entry(0x80000000, SZ_512M, fdt);
+	barebox_arm_entry(0x80000000, SZ_256M, fdt);
 }
diff --git a/arch/arm/dts/am335x-phytec-phycore.dts b/arch/arm/dts/am335x-phytec-phycore.dts
index a58a20bd4..10b72e6b4 100644
--- a/arch/arm/dts/am335x-phytec-phycore.dts
+++ b/arch/arm/dts/am335x-phytec-phycore.dts
@@ -24,7 +24,7 @@
 
 	memory {
 		device_type = "memory";
-		reg = <0x80000000 0x20000000>; /* 512 MB */
+		reg = <0x80000000 0x10000000>; /* 256 MB */
 	};
 
 	gpio-leds {