diff --git a/pkg/gecko_sdk/Kconfig b/pkg/gecko_sdk/Kconfig
index f4059241b5..dfdac1e4a1 100644
--- a/pkg/gecko_sdk/Kconfig
+++ b/pkg/gecko_sdk/Kconfig
@@ -1,11 +1,29 @@
 # Copyright (c) 2021 HAW Hamburg
+#               2022 SSV Software Systems GmbH
 #
 # This file is subject to the terms and conditions of the GNU Lesser
 # General Public License v2.1. See the file LICENSE in the top level
 # directory for more details.
 #
 
-config PACKAGE_GECKO_SDK
+## Definition of Gecko SDK specific features
+config HAS_GECKO_SDK_LIBRAIL_NONFPU
+    bool
+    help
+        Indicates that the CPU offers librail support if the FPU is disabled.
+        Librail is shipped as pre-compiled blobs. Thus, we have to adapt to
+        their choice how to process floats.
+
+config HAS_GECKO_SDK_LIBRAIL_FPU
+    bool
+    help
+        Indicates that the CPU offers librail support if the FPU is enabled.
+        Librail is shipped as pre-compiled blobs. Thus, we have to adapt to
+        their choice how to process floats.
+
+
+## Provided modules
+menuconfig PACKAGE_GECKO_SDK
     bool "Vendor library for EFM/EFR/EZR32 MCUs"
     depends on TEST_KCONFIG
     help
@@ -27,4 +45,18 @@ config MODULE_GECKO_SDK_EMLIB_EXTRA
     help
         Extra utility methods from EMBLIB vendor library.
 
+config MODULE_GECKO_SDK_LIBRAIL
+    bool "Radio Abstraction Interface Layer (RAIL)"
+    depends on (HAS_GECKO_SDK_LIBRAIL_NONFPU && !MODULE_CORTEXM_FPU) || (HAS_GECKO_SDK_LIBRAIL_FPU && MODULE_CORTEXM_FPU)
+    help
+        The Silicon Labs Radio Abstraction Interface Layer (RAIL) is required
+        to use the integrated radio offered by the EFR32 families.
+
+config MODULE_GECKO_SDK_LIBRAIL_PA
+    bool "Power Amplifier Power Conversion Functions"
+    depends on MODULE_GECKO_SDK_LIBRAIL
+    help
+        Helper to convert between transmission power in dBm and the
+        chip- and circuit-specific raw power level.
+
 endif # PACKAGE_GECKO_SDK
diff --git a/pkg/gecko_sdk/Makefile.dep b/pkg/gecko_sdk/Makefile.dep
index 63d497bfbd..500682fa8d 100644
--- a/pkg/gecko_sdk/Makefile.dep
+++ b/pkg/gecko_sdk/Makefile.dep
@@ -1,2 +1,6 @@
 USEMODULE += gecko_sdk_emlib
 USEMODULE += gecko_sdk_emlib_extra
+
+ifneq (,$(filter gecko_sdk_librail_pa,$(USEMODULE)))
+  USEMODULE += gecko_sdk_librail
+endif
diff --git a/pkg/gecko_sdk/Makefile.include b/pkg/gecko_sdk/Makefile.include
index af892cddb0..a46cc88de2 100644
--- a/pkg/gecko_sdk/Makefile.include
+++ b/pkg/gecko_sdk/Makefile.include
@@ -1,3 +1,14 @@
 INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/common/inc
 INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/emlib/inc
 INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/emlib-extra/inc
+
+ifneq (,$(filter gecko_sdk_librail,$(USEMODULE)))
+  ARCHIVES += $(BINDIR)/gecko_sdk_librail.a
+  INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/radio/rail_lib/common
+  INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/radio/rail_lib/chip/efr32/$(EFM32_LIBRAIL_HEADER_NAME)
+endif
+
+ifneq (,$(filter gecko_sdk_librail_pa,$(USEMODULE)))
+  INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/radio/rail_lib/plugin/pa-conversions
+  INCLUDES += -I$(PKGDIRBASE)/gecko_sdk/dist/radio/rail_lib/plugin/pa-conversions/$(EFM32_LIBRAIL_PA_HEADER_NAME)/config
+endif