soc: silabs: Add support for efm32pg23 and efm32pg28

Introducing the efm32pg23 and efm32pg28 Series 2 Silabs chips.

Signed-off-by: Christoph Jans <[email protected]>

Author: janchri

soc/silabs/silabs_s2/efm32pg23/Kconfig

@@ -0,0 +1,23 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_EFM32PG23
+	select ARM
+	select ARMV8_M_DSP
+	select ARM_TRUSTZONE_M
+	select CPU_CORTEX_M33
+	select CPU_CORTEX_M_HAS_DWT
+	select CPU_HAS_ARM_MPU
+	select CPU_HAS_ARM_SAU
+	select CPU_HAS_FPU
+	select HAS_PM
+	select HAS_SILABS_SISDK
+	select HAS_SWO
+	select SOC_GECKO_CMU
+	select SOC_GECKO_CORE
+	select SOC_GECKO_DEV_INIT
+	select SOC_GECKO_EMU
+	select SOC_GECKO_GPIO
+
+config SOC_GECKO_SDID
+	default 210 if SOC_SERIES_EFM32PG23

soc/silabs/silabs_s2/efm32pg23/Kconfig.defconfig

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SERIES_EFM32PG23
+
+config NUM_IRQS
+	# must be >= the highest interrupt number used
+	default 75
+
+endif

soc/silabs/silabs_s2/efm32pg23/Kconfig.soc

@@ -0,0 +1,23 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_EFM32PG23
+	bool
+	select SOC_FAMILY_SILABS_S2
+	help
+	  Silicon Labs EFM32PG23 Series MCU
+
+config SOC_PART_NUMBER_EFM32PG23B310F512IM48
+	bool
+	select SOC_SERIES_EFM32PG23
+	help
+	  Silicon Labs PG23 Pro Kit PK2504A EFM32PG23 Series MCU Revision A02
+
+config SOC_SERIES
+	default "efm32pg23" if SOC_SERIES_EFM32PG23
+
+config SOC
+	default "efm32pg23b310f512im48" if SOC_PART_NUMBER_EFM32PG23B310F512IM48
+
+config SOC_PART_NUMBER
+	default "EFM32PG23B310F512IM48" if SOC_PART_NUMBER_EFM32PG23B310F512IM48

soc/silabs/silabs_s2/efm32pg28/Kconfig

@@ -0,0 +1,23 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_EFM32PG28
+	select ARM
+	select ARMV8_M_DSP
+	select ARM_TRUSTZONE_M
+	select CPU_CORTEX_M33
+	select CPU_CORTEX_M_HAS_DWT
+	select CPU_HAS_ARM_MPU
+	select CPU_HAS_ARM_SAU
+	select CPU_HAS_FPU
+	select HAS_PM
+	select HAS_SILABS_SISDK
+	select HAS_SWO
+	select SOC_GECKO_CMU
+	select SOC_GECKO_CORE
+	select SOC_GECKO_DEV_INIT
+	select SOC_GECKO_EMU
+	select SOC_GECKO_GPIO
+
+config SOC_GECKO_SDID
+	default 210 if SOC_SERIES_EFM32PG28

soc/silabs/silabs_s2/efm32pg28/Kconfig.defconfig

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SERIES_EFM32PG28
+
+config NUM_IRQS
+	# must be >= the highest interrupt number used
+	default 75
+
+endif

soc/silabs/silabs_s2/efm32pg28/Kconfig.soc

@@ -0,0 +1,21 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SERIES_EFM32PG28
+	bool
+	select SOC_FAMILY_SILABS_S2
+	help
+	  Silicon Labs EFM32PG28 Series MCU
+
+config SOC_PART_NUMBER_EFM32PG28B310F1024IM68
+	bool
+	select SOC_SERIES_EFM32PG28
+
+config SOC_SERIES
+	default "efm32pg28" if SOC_SERIES_EFM32PG28
+
+config SOC
+	default "efm32pg28b310f1024im68" if SOC_PART_NUMBER_EFM32PG28B310F1024IM68
+
+config SOC_PART_NUMBER
+	default "EFM32PG28B310F1024IM68" if SOC_PART_NUMBER_EFM32PG28B310F1024IM68

soc/silabs/soc.yml

@@ -73,6 +73,12 @@ family:
         socs:
           - name: efr32mg29b140f1024im40
           - name: efr32mg29b230f1024cm40
+      - name: efm32pg28
+        socs:
+          - name: efm32pg28b310f1024im68
+      - name: efm32pg23
+        socs:
+          - name: efm32pg23b310f512im48
   - name: silabs_siwx91x
     series:
       - name: siwg917

west.yml

@@ -23,6 +23,8 @@ manifest:
       url-base: https://github.com/zephyrproject-rtos
     - name: babblesim
       url-base: https://github.com/BabbleSim
+    - name: hal_silabs_pr
+      url-base: https://github.com/janchri
 
   group-filter: [-babblesim, -optional]
 
@@ -235,7 +237,8 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 190a144a16bed9a938a94543ed5bbc70c0552e0f
+      remote: hal_silabs_pr
+      revision: e4e23d94c49b1792bee24a19649054ca4adee35d
       path: modules/hal/silabs
       groups:
         - hal