soc: arm: gigadevice: use specific series for GD32F403

Despite the "F4" prefix, GD32F403 is an SoC with significant differences
compared to other F4 MCUs:

- It has a completely different HAL
- It has significant hardware differences, for example, the pinctrl
  mechanism uses AFIO (all others use AF)

The grouping principles applied to other similar vendors such as ST
can't be applied for GD32 due to these reasons, so the approach taken
here is to define series based on the used HAL. A different HAL likely
means that there are significant hardware differences between, e.g. F403
and F405. The vendor likely chose a confusing naming scheme, but we need
to deal with it.

Signed-off-by: Gerard Marull-Paretas <gerard@teslabs.com>

boards/arm/gd32f403z_eval/gd32f403z_eval_defconfig

@@ -1,7 +1,7 @@
 # Copyright (c) 2021, ATL Electronics
 # SPDX-License-Identifier: Apache-2.0
 
-CONFIG_SOC_SERIES_GD32F4=y
+CONFIG_SOC_SERIES_GD32F403=y
 CONFIG_SOC_GD32F403Z=y
 CONFIG_BOARD_GD32F403Z_EVAL=y
 

soc/arm/gigadevice/gd32f4/Kconfig.defconfig.series

@@ -1,11 +0,0 @@
-# Copyright (c) 2021, ATL Electronics
-# SPDX-License-Identifier: Apache-2.0
-
-if SOC_SERIES_GD32F4
-
-source "soc/arm/gigadevice/gd32f4/Kconfig.defconfig.gd32f4*"
-
-config SOC_SERIES
-	default "gd32f4"
-
-endif   # SOC_SERIES_GD32F4

soc/arm/gigadevice/gd32f403/Kconfig.defconfig.gd32f403

@@ -8,10 +8,6 @@ config SOC
 	default	"gd32f403v" if SOC_GD32F403V
 	default	"gd32f403z" if SOC_GD32F403Z
 
-config SOC_SERIES_GD32F403
-	bool
-	default y
-
 config SYS_CLOCK_HW_CYCLES_PER_SEC
 	default 168000000
 

soc/arm/gigadevice/gd32f403/Kconfig.defconfig.series

@@ -0,0 +1,11 @@
+# Copyright (c) 2021, ATL Electronics
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SERIES_GD32F403
+
+source "soc/arm/gigadevice/gd32f403/Kconfig.defconfig.gd32f403"
+
+config SOC_SERIES
+	default "gd32f403"
+
+endif   # SOC_SERIES_GD32F403

soc/arm/gigadevice/gd32f403/Kconfig.series

@@ -1,8 +1,8 @@
 # Copyright (c) 2021, ATL Electronics
 # SPDX-License-Identifier: Apache-2.0
 
-config SOC_SERIES_GD32F4
-	bool "GigaDevice GD32F4xxx series Cortex-M4F MCU"
+config SOC_SERIES_GD32F403
+	bool "GigaDevice GD32F403 series Cortex-M4F MCU"
 	select ARM
 	select CPU_HAS_ARM_MPU
 	select CPU_HAS_FPU
@@ -11,4 +11,4 @@ config SOC_SERIES_GD32F4
 	select CPU_CORTEX_M_HAS_VTOR
 	select SOC_FAMILY_GD32_ARM
 	help
-	  Enable support for GigaDevice GD32F4xxx MCU series
+	  Enable support for GigaDevice GD32F403 MCU series

soc/arm/gigadevice/gd32f403/Kconfig.soc

@@ -2,8 +2,8 @@
 # SPDX-License-Identifier: Apache-2.0
 
 choice
-	prompt "GigaDevice GD32F4xx MCU Selection"
-	depends on SOC_SERIES_GD32F4
+	prompt "GigaDevice GD32F403 MCU Selection"
+	depends on SOC_SERIES_GD32F403
 
 	config SOC_GD32F403R
 		bool "gd32f403r"