diff --git a/boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml b/boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml
index ce2de9afe4a..e899883297c 100644
--- a/boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml
+++ b/boards/arm/qemu_cortex_r5/qemu_cortex_r5.yaml
@@ -7,8 +7,8 @@ toolchain:
   - zephyr
   - gnuarmemb
   - xtools
-ram: 128
-flash: 1024
+ram: 65536
+flash: 32768
 testing:
   default: true
   ignore_tags:
diff --git a/dts/arm/xilinx/zynqmp.dtsi b/dts/arm/xilinx/zynqmp.dtsi
index 8b733a804c3..fabde45aa68 100644
--- a/dts/arm/xilinx/zynqmp.dtsi
+++ b/dts/arm/xilinx/zynqmp.dtsi
@@ -12,12 +12,12 @@
 	soc {
 		flash0: flash@c0000000 {
 			compatible = "soc-nv-flash";
-			reg = <0xc0000000 DT_SIZE_K(64)>;
+			reg = <0xc0000000 DT_SIZE_M(32)>;
 		};
 
 		sram0: memory@0 {
 			compatible = "mmio-sram";
-			reg = <0 DT_SIZE_K(256)>;
+			reg = <0 DT_SIZE_M(64)>;
 		};
 
 		uart0: uart@ff000000 {