boards: arm: stm32u585 disco kit for XiP on external octoflash

Define the Device tree of the b_u585i_iot02a disco kit
to access the external NOR octo-flash in MemoryMapped mode
for XiP

Signed-off-by: Francois Ramu <[email protected]>

Author: FRASTM

boards/arm/b_u585i_iot02a/b_u585i_iot02a-common.dtsi

@@ -131,11 +131,10 @@ stm32_lp_tick_source: &lptim1 {
 
 	status = "okay";
 
-	mx25lm51245: ospi-nor-flash@0 {
+	mx25lm51245: ospi-nor-flash@70000000 {
 		compatible = "st,stm32-ospi-nor";
-		reg = <0>;
+		reg = <0x70000000 DT_SIZE_M(64)>; /* 512 Mbits */
 		ospi-max-frequency = <DT_FREQ_M(50)>;
-		size = <DT_SIZE_M(512)>; /* 64 MBytes */
 		spi-bus-width = <OSPI_OPI_MODE>;
 		data-rate = <OSPI_DTR_TRANSFER>;
 		four-byte-opcodes;
@@ -146,8 +145,10 @@ stm32_lp_tick_source: &lptim1 {
 			   #address-cells = <1>;
 			   #size-cells = <1>;
 
-			   partition@0 {
-			       reg = <0x00000000 DT_SIZE_M(64)>;
+			   /* put image at the offset of slot1 */
+			   slot1_partition:partition@100000 {
+			       label = "image-1";
+			       reg = <0x00100000 DT_SIZE_K(416)>;
 			   };
 		};
 	};

boards/arm/b_u585i_iot02a/b_u585i_iot02a.dts

@@ -16,7 +16,6 @@
 		zephyr,shell-uart = &usart1;
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash0;
-		zephyr,code-partition = &slot0_partition;
 	};
 
 	aliases {
@@ -45,10 +44,7 @@
 			label = "image-0";
 			reg = <0x00010000 DT_SIZE_K(416)>;
 		};
-		slot1_partition: partition@78000 {
-			label = "image-1";
-			reg = <0x00078000 DT_SIZE_K(416)>;
-		};
+
 		scratch_partition: partition@e0000 {
 			label = "image-scratch";
 			reg = <0x000e0000 DT_SIZE_K(64)>;