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

include/zephyr/drivers/clock_control/clock_control_silabs.h

@@ -19,6 +19,8 @@
 #include <zephyr/dt-bindings/clock/silabs/xg24-clock.h>
 #elif defined(CONFIG_SOC_SILABS_XG27)
 #include <zephyr/dt-bindings/clock/silabs/xg27-clock.h>
+#elif defined(CONFIG_SOC_SILABS_XG28)
+#include <zephyr/dt-bindings/clock/silabs/xg28-clock.h>
 #elif defined(CONFIG_SOC_SILABS_XG29)
 #include <zephyr/dt-bindings/clock/silabs/xg29-clock.h>
 #endif

soc/silabs/silabs_s2/xg23/Kconfig.soc

@@ -1,4 +1,5 @@
 # Copyright (c) 2024 Yishai Jaffe
+# Copyright (c) 2025 Christoph Jans
 # SPDX-License-Identifier: Apache-2.0
 
 config SOC_SILABS_XG23
@@ -13,12 +14,24 @@ config SOC_SERIES_EFR32ZG23
 	help
 	  Silicon Labs EFR32ZG23 Series MCU
 
+config SOC_SERIES_EFM32PG23
+	bool
+	select SOC_SILABS_XG23
+	help
+	  Silicon Labs EFM32PG23 Series MCU
+
 config SOC_PART_NUMBER_EFR32ZG23B020F512IM48
 	bool
 	select SOC_SERIES_EFR32ZG23
 
+config SOC_EFM32PG23B310F512IM48
+	bool
+	select SOC_SERIES_EFM32PG23
+
 config SOC_SERIES
 	default "efr32zg23" if SOC_SERIES_EFR32ZG23
+	default "efm32pg23" if SOC_SERIES_EFM32PG23
 
 config SOC
 	default "efr32zg23b020f512im48" if SOC_PART_NUMBER_EFR32ZG23B020F512IM48
+	default "efm32pg23b310f512im48" if SOC_EFM32PG23B310F512IM48

soc/silabs/silabs_s2/xg28/Kconfig

@@ -0,0 +1,20 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SILABS_XG28
+	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_SWO
+	select SOC_GECKO_CMU
+	select SOC_GECKO_CORE
+	select SOC_GECKO_DEV_INIT
+	select SOC_GECKO_EMU
+	select SOC_GECKO_GPIO
+	select SOC_GECKO_SE

soc/silabs/silabs_s2/xg28/Kconfig.defconfig

@@ -0,0 +1,10 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+if SOC_SILABS_XG28
+
+config NUM_IRQS
+	# must be >= the highest interrupt number used
+	default 79
+
+endif

soc/silabs/silabs_s2/xg28/Kconfig.soc

@@ -0,0 +1,24 @@
+# Copyright (c) 2025 Christoph Jans
+# SPDX-License-Identifier: Apache-2.0
+
+config SOC_SILABS_XG28
+	bool
+	select SOC_FAMILY_SILABS_S2
+	help
+	  Silicon Labs XG28 Series SoC and modules
+
+config SOC_SERIES_EFM32PG28
+	bool
+	select SOC_SILABS_XG28
+	help
+	  Silicon Labs EFM32PG28 Series MCU
+
+config SOC_EFM32PG28B310F1024IM68
+	bool
+	select SOC_SERIES_EFM32PG28
+
+config SOC_SERIES
+	default "efm32pg28" if SOC_SERIES_EFM32PG28
+
+config SOC
+	default "efm32pg28b310f1024im68" if SOC_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

@@ -235,7 +235,7 @@ manifest:
       groups:
         - hal
     - name: hal_silabs
-      revision: 190a144a16bed9a938a94543ed5bbc70c0552e0f
+      revision: 95e957408ddd967ac4b69dc32096bd3793abb76c
       path: modules/hal/silabs
       groups:
         - hal