dts: arm: st: h7: add ITCM memory for STM32H7A3

The STM32H7A3 SoC has 64 kB of ITCM RAM mapped at address 0x00000000.

Tested using zephyr_code_relocate().

Signed-off-by: Aurelien Jarno <[email protected]>

Author: aurel32

dts/arm/st/h7/stm32h7a3.dtsi

@@ -96,6 +96,12 @@
 		zephyr,memory-region = "DTCM";
 	};
 
+	itcm: memory@0 {
+		compatible = "zephyr,memory-region", "arm,itcm";
+		reg = <0x00000000 DT_SIZE_K(64)>;
+		zephyr,memory-region = "ITCM";
+	};
+
 	otghs_fs_phy: otghs_fs_phy {
 		compatible = "usb-nop-xceiv";
 		#phy-cells = <0>;