diff --git a/dts/arm/nxp/nxp_rt1060.dtsi b/dts/arm/nxp/nxp_rt1060.dtsi
index 6f630ccc0e8..c94a1646f88 100644
--- a/dts/arm/nxp/nxp_rt1060.dtsi
+++ b/dts/arm/nxp/nxp_rt1060.dtsi
@@ -6,11 +6,13 @@
 
 #include <nxp/nxp_rt.dtsi>
 
-/ {
-	soc {
-		ocram1: ocram@20280000 {
-			compatible = "mmio-sram";
-			reg = <0x20280000 0x80000>;
-		};
-	};
+/* i.MX rt1060 has two continuous on-chip RAM, one is part of the
+ * FlexRAM mapped at 0x20280000 (vs 0x20280000 on rt1050) and is
+ * configurable (256KB by defaults), the other one is dedicated 512KB
+ * ram (OCRAM2) mapped at 0x20200000. In order to have a continuous
+ * region, we describe them in one 768Kb unique node.
+ */
+&ocram0 {
+	compatible = "mmio-sram";
+	reg = <0x20200000 0xC0000>;
 };
diff --git a/soc/arm/nxp_imx/rt/arm_mpu_mem_cfg.h b/soc/arm/nxp_imx/rt/arm_mpu_mem_cfg.h
index 2e472048a08..25a26ab47bb 100644
--- a/soc/arm/nxp_imx/rt/arm_mpu_mem_cfg.h
+++ b/soc/arm/nxp_imx/rt/arm_mpu_mem_cfg.h
@@ -41,6 +41,10 @@
 #define REGION_SRAM_0_SIZE REGION_128K
 #elif CONFIG_SRAM_SIZE == 256
 #define REGION_SRAM_0_SIZE REGION_256K
+#elif CONFIG_SRAM_SIZE == 512
+#define REGION_SRAM_0_SIZE REGION_512K
+#elif CONFIG_SRAM_SIZE == 768
+#define REGION_SRAM_0_SIZE REGION_1M /* MPU expects power of two size */
 #elif CONFIG_SRAM_SIZE == 32768
 #define REGION_SRAM_0_SIZE REGION_32M
 #else