test: flash: add gd32 boards

This add gd32vf103v_eval, gd32a503v_eval and gd32f470i_eval boards to
flash common test.

    Boards       | Flash Type
-------------------------------
 gd32vf103v_eval | gd32 fmc v1
 gd32a503v_eval  | gd32 fmc v2
 gd32f470i_eval  | gd32 fmc v3

Signed-off-by: HaiLong Yang <hailong.yang@brainco.cn>

boards/arm/gd32a503v_eval/gd32a503v_eval.yaml

@@ -16,6 +16,7 @@ supported:
   - counter
   - dac
   - dma
+  - flash
   - gpio
   - pwm
   - spi

boards/arm/gd32f470i_eval/gd32f470i_eval.yaml

@@ -14,6 +14,7 @@ toolchain:
 supported:
   - counter
   - dac
+  - flash
   - gpio
   - i2c
   - pwm

boards/riscv/gd32vf103v_eval/gd32vf103v_eval.yaml

@@ -10,10 +10,11 @@ flash: 128
 toolchain:
   - zephyr
 supported:
-  - uart
+  - dma
+  - flash
   - gpio
   - pwm
-  - watchdog
-  - dma
   - spi
+  - uart
+  - watchdog
 vendor: gd

tests/drivers/flash/common/boards/gd32a503v_eval.overlay

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2023, BrainCo Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Set 4KB of storage at the border of bank0(256KB) and bank1(128KB). */
+		storage_partition: partition@3f800 {
+			label = "storage";
+			reg = <0x0003f800 DT_SIZE_K(4)>;
+		};
+	};
+};
+
+/* To avoid test on nor_flash, disable it. */
+&nor_flash {
+	status = "disabled";
+};

tests/drivers/flash/common/boards/gd32f470i_eval.overlay

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2023, BrainCo Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Set 512KB of storage at the end of 3072KB flash */
+		storage_partition: partition@280000 {
+			label = "storage";
+			reg = <0x00280000 DT_SIZE_K(512)>;
+		};
+	};
+};
+
+/* To avoid test on nor_flash, disable it. */
+&nor_flash {
+	status = "disabled";
+};

tests/drivers/flash/common/boards/gd32vf103v_eval.overlay

@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2023, BrainCo Inc.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+&flash0 {
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		/* Set 2KB of storage at the end of 128KB flash */
+		storage_partition: partition@1f800 {
+			label = "storage";
+			reg = <0x0001f800 DT_SIZE_K(2)>;
+		};
+	};
+};
+
+/* To avoid test on nor_flash, disable it. */
+&nor_flash {
+	status = "disabled";
+};

tests/drivers/flash/common/testcase.yaml

@@ -92,3 +92,8 @@ tests:
       - atsamd20_xpro
       - atsamr21_xpro
       - atsame54_xpro
+  drivers.flash.common.gd32:
+    platform_allow:
+      - gd32vf103v_eval
+      - gd32a503v_eval
+      - gd32f470i_eval