boards: frdm_mcxa166, frdm_mcxa276: add flash support

1. enable flash support
2. verified test/driver/flash

Signed-off-by: Peter Wang <[email protected]>

Author: peterwangsz

boards/nxp/frdm_mcxa166/frdm_mcxa166.dts

@@ -26,6 +26,7 @@
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash;
 		zephyr,flash-controller = &fmu;
+		zephyr,code-partition = &slot0_partition;
 		zephyr,console = &lpuart2;
 		zephyr,shell-uart = &lpuart2;
 	};
@@ -113,3 +114,29 @@
 	pinctrl-0 = <&pinmux_lpuart2>;
 	pinctrl-names = "default";
 };
+
+&flash {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 DT_SIZE_K(64)>;
+			read-only;
+		};
+		slot0_partition: partition@10000 {
+			label = "image-0";
+			reg = <0x00010000 DT_SIZE_K(400)>;
+		};
+		slot1_partition: partition@74000 {
+			label = "image-1";
+			reg = <0x00074000 DT_SIZE_K(400)>;
+		};
+		storage_partition: partition@d8000 {
+			label = "storage";
+			reg = <0x000d8000 DT_SIZE_K(112)>;
+		};
+	};
+};

boards/nxp/frdm_mcxa166/frdm_mcxa166.yaml

@@ -16,4 +16,5 @@ toolchain:
 supported:
   - gpio
   - uart
+  - flash
 vendor: nxp

boards/nxp/frdm_mcxa276/frdm_mcxa276.dts

@@ -26,6 +26,7 @@
 		zephyr,sram = &sram0;
 		zephyr,flash = &flash;
 		zephyr,flash-controller = &fmu;
+		zephyr,code-partition = &slot0_partition;
 		zephyr,console = &lpuart2;
 		zephyr,shell-uart = &lpuart2;
 	};
@@ -113,3 +114,29 @@
 	pinctrl-0 = <&pinmux_lpuart2>;
 	pinctrl-names = "default";
 };
+
+&flash {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		boot_partition: partition@0 {
+			label = "mcuboot";
+			reg = <0x00000000 DT_SIZE_K(64)>;
+			read-only;
+		};
+		slot0_partition: partition@10000 {
+			label = "image-0";
+			reg = <0x00010000 DT_SIZE_K(400)>;
+		};
+		slot1_partition: partition@74000 {
+			label = "image-1";
+			reg = <0x00074000 DT_SIZE_K(400)>;
+		};
+		storage_partition: partition@d8000 {
+			label = "storage";
+			reg = <0x000d8000 DT_SIZE_K(112)>;
+		};
+	};
+};

boards/nxp/frdm_mcxa276/frdm_mcxa276.yaml

@@ -16,4 +16,5 @@ toolchain:
 supported:
   - gpio
   - uart
+  - flash
 vendor: nxp

drivers/flash/soc_flash_mcux.c

@@ -138,6 +138,11 @@ static void clear_flash_caches(void)
 	/* this bit clears the code cache */
 	*lpcac_ctrl |= BIT(1);
 }
+#elif CONFIG_SOC_SERIES_MCXA
+static void clear_flash_caches(void)
+{
+	SYSCON->LPCAC_CTRL |= SYSCON_LPCAC_CTRL_DIS_LPCAC(1U);
+}
 #else
 #undef SOC_FLASH_NEED_CLEAR_CACHES
 #define clear_flash_caches(...)