diff --git a/.github/workflows/examples-efr32.yaml b/.github/workflows/examples-efr32.yaml
index 16aaaa42a189d4..320dad29dadd31 100644
--- a/.github/workflows/examples-efr32.yaml
+++ b/.github/workflows/examples-efr32.yaml
@@ -48,7 +48,7 @@ jobs:
           attempt_limit: 3
           attempt_delay: 2000
       - name: Checkout submodules
-        run: scripts/checkout_submodules.py --shallow --platform efr32
+        run: scripts/checkout_submodules.py --shallow --recursive --platform efr32
 
       # - name: Out of Tree verification
       #   run: third_party/silabs/out_of_tree_verification.sh
diff --git a/.gitmodules b/.gitmodules
index 16d589e739d539..abde0e5f8cdfd5 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -78,7 +78,8 @@
 	platforms = qpg
 [submodule "third_party/openthread/ot-efr32"]
 	path = third_party/openthread/ot-efr32
-	url = https://github.com/openthread/ot-efr32.git
+	url = https://github.com/SiliconLabs/ot-efr32.git
+	branch  = matter_sve
 	platforms = efr32
 [submodule "third_party/openthread/ot-ifx"]
 	path = third_party/openthread/ot-ifx
diff --git a/examples/chef/efr32/BUILD.gn b/examples/chef/efr32/BUILD.gn
index e938574e195aa6..efaace05910a0b 100644
--- a/examples/chef/efr32/BUILD.gn
+++ b/examples/chef/efr32/BUILD.gn
@@ -206,21 +206,9 @@ efr32_executable("chef_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   if (chip_enable_ota_requestor) {
diff --git a/examples/chef/efr32/args.gni b/examples/chef/efr32/args.gni
index 7d077dce704c2f..4e322f1022501b 100644
--- a/examples/chef/efr32/args.gni
+++ b/examples/chef/efr32/args.gni
@@ -24,3 +24,5 @@ pw_rpc_CONFIG = "$dir_pw_rpc:disable_global_mutex"
 pw_log_BACKEND = "${chip_root}/src/lib/support/pw_log_chip"
 pw_assert_BACKEND = "$dir_pw_assert_log:check_backend"
 chip_enable_openthread = true
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
diff --git a/examples/chef/efr32/include/AppConfig.h b/examples/chef/efr32/include/AppConfig.h
index 91501d889a6234..946b593cab50a4 100644
--- a/examples/chef/efr32/include/AppConfig.h
+++ b/examples/chef/efr32/include/AppConfig.h
@@ -32,7 +32,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/light-switch-app/efr32/BUILD.gn b/examples/light-switch-app/efr32/BUILD.gn
index b3fb8fdd5b86c8..026dc46d13195c 100644
--- a/examples/light-switch-app/efr32/BUILD.gn
+++ b/examples/light-switch-app/efr32/BUILD.gn
@@ -199,21 +199,9 @@ efr32_executable("light_switch_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   # Attestation Credentials
diff --git a/examples/light-switch-app/efr32/args.gni b/examples/light-switch-app/efr32/args.gni
index 7df1c5e400f56f..8e1885d95d18d4 100644
--- a/examples/light-switch-app/efr32/args.gni
+++ b/examples/light-switch-app/efr32/args.gni
@@ -24,3 +24,5 @@ pw_log_BACKEND = "${chip_root}/src/lib/support/pw_log_chip"
 pw_assert_BACKEND = "$dir_pw_assert_log:check_backend"
 chip_enable_openthread = true
 pw_rpc_CONFIG = "$dir_pw_rpc:disable_global_mutex"
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
diff --git a/examples/light-switch-app/efr32/include/AppConfig.h b/examples/light-switch-app/efr32/include/AppConfig.h
index 91501d889a6234..946b593cab50a4 100644
--- a/examples/light-switch-app/efr32/include/AppConfig.h
+++ b/examples/light-switch-app/efr32/include/AppConfig.h
@@ -32,7 +32,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/lighting-app/efr32/BUILD.gn b/examples/lighting-app/efr32/BUILD.gn
index 9a9e4c15b8f33c..81a25554eb9ba2 100644
--- a/examples/lighting-app/efr32/BUILD.gn
+++ b/examples/lighting-app/efr32/BUILD.gn
@@ -204,21 +204,9 @@ efr32_executable("lighting_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   if (chip_enable_ota_requestor) {
diff --git a/examples/lighting-app/efr32/args.gni b/examples/lighting-app/efr32/args.gni
index 7df1c5e400f56f..1e5ed4ca14102c 100644
--- a/examples/lighting-app/efr32/args.gni
+++ b/examples/lighting-app/efr32/args.gni
@@ -24,3 +24,6 @@ pw_log_BACKEND = "${chip_root}/src/lib/support/pw_log_chip"
 pw_assert_BACKEND = "$dir_pw_assert_log:check_backend"
 chip_enable_openthread = true
 pw_rpc_CONFIG = "$dir_pw_rpc:disable_global_mutex"
+
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
diff --git a/examples/lock-app/efr32/BUILD.gn b/examples/lock-app/efr32/BUILD.gn
index a739b266110543..c98bebfed6d942 100644
--- a/examples/lock-app/efr32/BUILD.gn
+++ b/examples/lock-app/efr32/BUILD.gn
@@ -201,21 +201,9 @@ efr32_executable("lock_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   if (chip_enable_ota_requestor) {
diff --git a/examples/lock-app/efr32/args.gni b/examples/lock-app/efr32/args.gni
index b4a0322c442f40..9ff5e1fd3992f1 100644
--- a/examples/lock-app/efr32/args.gni
+++ b/examples/lock-app/efr32/args.gni
@@ -24,3 +24,5 @@ chip_enable_openthread = true
 pw_log_BACKEND = "${chip_root}/src/lib/support/pw_log_chip"
 pw_assert_BACKEND = "$dir_pw_assert_log:check_backend"
 pw_rpc_CONFIG = "$dir_pw_rpc:disable_global_mutex"
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
diff --git a/examples/lock-app/efr32/include/AppConfig.h b/examples/lock-app/efr32/include/AppConfig.h
index 852083cb9cbd91..096560abefe349 100644
--- a/examples/lock-app/efr32/include/AppConfig.h
+++ b/examples/lock-app/efr32/include/AppConfig.h
@@ -32,7 +32,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/persistent-storage/efr32/include/AppConfig.h b/examples/persistent-storage/efr32/include/AppConfig.h
index 74a5ae90e43c83..ae2846d90c6caa 100644
--- a/examples/persistent-storage/efr32/include/AppConfig.h
+++ b/examples/persistent-storage/efr32/include/AppConfig.h
@@ -24,7 +24,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/pigweed-app/efr32/include/AppConfig.h b/examples/pigweed-app/efr32/include/AppConfig.h
index 61a5430dafeeb8..8935b7f3bb7284 100644
--- a/examples/pigweed-app/efr32/include/AppConfig.h
+++ b/examples/pigweed-app/efr32/include/AppConfig.h
@@ -39,7 +39,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
 void appError(int err);
diff --git a/examples/platform/efr32/BUILD.gn b/examples/platform/efr32/BUILD.gn
index ba36aeff00c83b..d1522f93d6d686 100644
--- a/examples/platform/efr32/BUILD.gn
+++ b/examples/platform/efr32/BUILD.gn
@@ -15,6 +15,7 @@
 import("//build_overrides/chip.gni")
 import("//build_overrides/efr32_sdk.gni")
 import("${chip_root}/src/lib/lib.gni")
+import("${chip_root}/src/platform/device.gni")
 import("${efr32_sdk_build_root}/efr32_sdk.gni")
 
 config("chip_examples_project_config") {
@@ -40,14 +41,19 @@ config("chip_examples_project_config") {
 }
 
 source_set("openthread_core_config_efr32_chip_examples") {
-  sources = [ "project_include/OpenThreadConfig.h" ]
+  if (chip_enable_openthread) {
+    sources = [ "project_include/OpenThreadConfig.h" ]
 
-  public_deps = [
-    "${chip_root}/third_party/openthread/platforms/efr32:openthread_core_config_efr32",
-    "${efr32_sdk_build_root}:efr32_sdk",
-  ]
+    public_deps = [ "${efr32_sdk_build_root}:efr32_sdk" ]
 
-  public_configs = [ ":chip_examples_project_config" ]
+    if (use_silabs_thread_lib) {
+      public_deps += [ "${efr32_sdk_build_root}:openthread_core_config_efr32" ]
+    } else {
+      public_deps += [ "${chip_root}/third_party/openthread/platforms/efr32:openthread_core_config_efr32" ]
+    }
+
+    public_configs = [ ":chip_examples_project_config" ]
+  }
 }
 
 source_set("efr-matter-shell") {
diff --git a/examples/platform/efr32/efr32_utils.h b/examples/platform/efr32/efr32_utils.h
index 610bde3e4e2511..98087091d9c0e9 100644
--- a/examples/platform/efr32/efr32_utils.h
+++ b/examples/platform/efr32/efr32_utils.h
@@ -24,7 +24,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/platform/efr32/init_efrPlatform.cpp b/examples/platform/efr32/init_efrPlatform.cpp
index f251f48f5dbab1..d0fb913165c469 100644
--- a/examples/platform/efr32/init_efrPlatform.cpp
+++ b/examples/platform/efr32/init_efrPlatform.cpp
@@ -72,13 +72,11 @@ void init_efrPlatform(void)
 #endif
 
 #if EFR32_LOG_ENABLED
-    efr32LogInit();
+    efr32InitLog();
 #endif
 
 #if CHIP_ENABLE_OPENTHREAD
-    efr32RadioInit();
-    efr32AlarmInit();
-    efr32MiscInit();
+    sl_ot_sys_init();
 #endif // CHIP_ENABLE_OPENTHREAD
 }
 
diff --git a/examples/shell/efr32/include/AppConfig.h b/examples/shell/efr32/include/AppConfig.h
index a14ec9f589f735..743c6eddbb18ad 100644
--- a/examples/shell/efr32/include/AppConfig.h
+++ b/examples/shell/efr32/include/AppConfig.h
@@ -54,7 +54,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/examples/thermostat/efr32/BUILD.gn b/examples/thermostat/efr32/BUILD.gn
index 90f61b99ca1ad6..fe2be76adf88a8 100644
--- a/examples/thermostat/efr32/BUILD.gn
+++ b/examples/thermostat/efr32/BUILD.gn
@@ -195,21 +195,9 @@ efr32_executable("thermostat_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   # Attestation Credentials
diff --git a/examples/window-app/efr32/BUILD.gn b/examples/window-app/efr32/BUILD.gn
index fad09d7f4d3ce7..bcd17e3b6dddcf 100644
--- a/examples/window-app/efr32/BUILD.gn
+++ b/examples/window-app/efr32/BUILD.gn
@@ -187,21 +187,9 @@ efr32_executable("window_app") {
   # OpenThread Settings
   if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+      "${chip_root}/third_party/openthread:openthread",
       "${examples_plat_dir}:efr-matter-shell",
     ]
-    if (chip_openthread_ftd) {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-      ]
-    } else {
-      deps += [
-        "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-        "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
-      ]
-    }
   }
 
   if (chip_enable_ota_requestor) {
diff --git a/examples/window-app/efr32/args.gni b/examples/window-app/efr32/args.gni
index 0b7ef403df72cd..26f97a8076d141 100644
--- a/examples/window-app/efr32/args.gni
+++ b/examples/window-app/efr32/args.gni
@@ -23,3 +23,5 @@ chip_enable_ota_requestor = true
 pw_log_BACKEND = "${chip_root}/src/lib/support/pw_log_chip"
 pw_assert_BACKEND = "$dir_pw_assert_log:check_backend"
 chip_enable_openthread = true
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
diff --git a/examples/window-app/efr32/include/AppConfig.h b/examples/window-app/efr32/include/AppConfig.h
index d8a68d9982e4b8..a9957cf77b5bb9 100644
--- a/examples/window-app/efr32/include/AppConfig.h
+++ b/examples/window-app/efr32/include/AppConfig.h
@@ -57,7 +57,7 @@ extern "C" {
 #define COVER_LIFT_TILT_TIMEOUT 500
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
diff --git a/scripts/checkout_submodules.py b/scripts/checkout_submodules.py
index 486a3e7b3b355d..b150b8df71253e 100755
--- a/scripts/checkout_submodules.py
+++ b/scripts/checkout_submodules.py
@@ -74,7 +74,7 @@ def make_chip_root_safe_directory() -> None:
     subprocess.check_call(['git', 'config', '--global', '--add', 'safe.directory', CHIP_ROOT])
 
 
-def checkout_modules(modules: list, shallow: bool, force: bool) -> None:
+def checkout_modules(modules: list, shallow: bool, force: bool, recursive: bool) -> None:
     names = [module.name.replace('submodule "', '').replace('"', '') for module in modules]
     names = ', '.join(names)
     logging.info(f'Checking out: {names}')
@@ -82,6 +82,7 @@ def checkout_modules(modules: list, shallow: bool, force: bool) -> None:
     cmd = ['git', '-C', CHIP_ROOT, 'submodule', 'update', '--init']
     cmd += ['--depth', '1'] if shallow else []
     cmd += ['--force'] if force else []
+    cmd += ['--recursive'] if recursive else []
     cmd += [module.path for module in modules]
 
     subprocess.check_call(cmd)
@@ -109,6 +110,7 @@ def main():
     parser.add_argument('--force', action='store_true', help='Perform action despite of warnings')
     parser.add_argument('--deinit-unmatched', action='store_true',
                         help='Deinitialize submodules for non-matching platforms')
+    parser.add_argument('--recursive', action='store_true', help='Recursive init of the listed submodules')
     args = parser.parse_args()
 
     modules = list(load_module_info())
@@ -117,7 +119,7 @@ def main():
     unmatched_modules = [m for m in modules if not module_matches_platforms(m, selected_platforms)]
 
     make_chip_root_safe_directory()
-    checkout_modules(selected_modules, args.shallow, args.force)
+    checkout_modules(selected_modules, args.shallow, args.force, args.recursive)
 
     if args.deinit_unmatched:
         deinit_modules(unmatched_modules, args.force)
diff --git a/scripts/examples/gn_efr32_example.sh b/scripts/examples/gn_efr32_example.sh
index 6882bba7d44d00..5b47c945c771a8 100755
--- a/scripts/examples/gn_efr32_example.sh
+++ b/scripts/examples/gn_efr32_example.sh
@@ -34,6 +34,7 @@ set -x
 env
 USE_WIFI=false
 
+SILABS_THREAD_TARGET=\""../silabs:ot-efr32-cert"\"
 USAGE="./scripts/examples/gn_efr32_example.sh <AppRootFolder> <outputFolder> <efr32_board_name> [<Build options>]"
 
 if [ "$#" == "0" ]; then
@@ -102,6 +103,8 @@ if [ "$#" == "0" ]; then
             build wifi example variant for given exansion board
         --additional_data_advertising
             enable Addition data advertissing and rotating device ID
+        --use_ot_lib
+            use the silabs openthread library
     "
 elif [ "$#" -lt "2" ]; then
     echo "Invalid number of arguments
@@ -149,6 +152,10 @@ else
                 optArgs+="chip_enable_additional_data_advertising=true chip_enable_rotating_device_id=true "
                 shift
                 ;;
+            --use_ot_lib)
+                optArgs+="use_silabs_thread_lib=true chip_openthread_target=$SILABS_THREAD_TARGET openthread_external_platform=\"""\" "
+                shift
+                ;;
             *)
                 if [ "$1" =~ *"use_rs911x=true"* ] || [ "$1" =~ *"use_wf200=true"* ]; then
                     USE_WIFI=true
diff --git a/src/inet/BUILD.gn b/src/inet/BUILD.gn
index 6e671c0f7b358e..5a85beb667c25b 100644
--- a/src/inet/BUILD.gn
+++ b/src/inet/BUILD.gn
@@ -108,13 +108,7 @@ static_library("inet") {
   }
 
   if (chip_system_config_use_open_thread_inet_endpoints) {
-    if (chip_openthread_ftd) {
-      public_deps +=
-          [ "${chip_root}/third_party/openthread/repo:libopenthread-ftd" ]
-    } else {
-      public_deps +=
-          [ "${chip_root}/third_party/openthread/repo:libopenthread-mtd" ]
-    }
+    public_deps += [ "${chip_root}/third_party/openthread:openthread" ]
   }
 
   if (chip_inet_config_enable_tcp_endpoint) {
diff --git a/src/platform/EFR32/BUILD.gn b/src/platform/EFR32/BUILD.gn
index cf1b3b77bcec1c..e406ce994eedee 100644
--- a/src/platform/EFR32/BUILD.gn
+++ b/src/platform/EFR32/BUILD.gn
@@ -97,15 +97,10 @@ static_library("EFR32") {
     "$dir_pw_checksum",
     "$dir_pw_kvs",
   ]
-
   if (chip_enable_openthread) {
-    if (chip_openthread_ftd) {
-      public_deps +=
-          [ "${chip_root}/third_party/openthread/repo:libopenthread-ftd" ]
-    } else {
-      public_deps +=
-          [ "${chip_root}/third_party/openthread/repo:libopenthread-mtd" ]
-    }
+    public_deps += [ "${chip_root}/third_party/openthread:openthread" ]
+
+    deps += [ "${chip_root}/third_party/silabs:openthread_cli" ]
 
     sources += [
       "../OpenThread/OpenThreadUtils.cpp",
diff --git a/src/platform/EFR32/Logging.cpp b/src/platform/EFR32/Logging.cpp
index ad78dfae0a033a..ad0711fe930961 100644
--- a/src/platform/EFR32/Logging.cpp
+++ b/src/platform/EFR32/Logging.cpp
@@ -104,7 +104,7 @@ static void PrintLog(const char * msg)
 /**
  * Initialize Segger RTT for logging
  */
-extern "C" void efr32LogInit(void)
+extern "C" void efr32InitLog(void)
 {
 #if EFR32_LOG_ENABLED
 #if LOG_RTT_BUFFER_INDEX != 0
@@ -344,7 +344,7 @@ extern "C" void debugHardfault(uint32_t * sp)
 
     if (sLogInitialized == false)
     {
-        efr32LogInit();
+        efr32InitLog();
     }
 
     snprintf(formattedMsg, sizeof formattedMsg, LOG_ERROR "HardFault:\n");
diff --git a/src/platform/EFR32/ThreadStackManagerImpl.cpp b/src/platform/EFR32/ThreadStackManagerImpl.cpp
index a90db73b620d39..16d792276644e4 100644
--- a/src/platform/EFR32/ThreadStackManagerImpl.cpp
+++ b/src/platform/EFR32/ThreadStackManagerImpl.cpp
@@ -100,6 +100,11 @@ extern "C" void otPlatFree(void * aPtr)
     CHIPPlatformMemoryFree(aPtr);
 }
 
+extern "C" __WEAK void sl_openthread_init(void)
+{
+    // Place holder for enabling Silabs specific features available only through Simplicity Studio
+}
+
 /**
  * @brief Openthread UART implementation for the CLI is conflicting
  *        with the UART implemented for Pigweed RPC as they use the same UART port
diff --git a/src/platform/EFR32/args.gni b/src/platform/EFR32/args.gni
index a66bd28acf86ef..7b80e77e100190 100644
--- a/src/platform/EFR32/args.gni
+++ b/src/platform/EFR32/args.gni
@@ -43,14 +43,12 @@ chip_with_lwip = false
 
 chip_build_tests = false
 
+openthread_root = "${chip_root}/third_party/openthread/ot-efr32/openthread"
 openthread_core_config_platform_check_file =
     "openthread-core-efr32-config-check.h"
 openthread_project_core_config_file = "OpenThreadConfig.h"
 openthread_core_config_deps = [ "${chip_root}/examples/platform/efr32:openthread_core_config_efr32_chip_examples" ]
 
-openthread_external_platform =
-    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
-
 chip_config_memory_management = "platform"
 
 pw_build_LINK_DEPS = [
diff --git a/src/test_driver/efr32/.gn b/src/test_driver/efr32/.gn
index 81cec9d11a421b..7bb85d530fae5c 100644
--- a/src/test_driver/efr32/.gn
+++ b/src/test_driver/efr32/.gn
@@ -23,6 +23,5 @@ check_system_includes = true
 default_args = {
   target_cpu = "arm"
   target_os = "freertos"
-
   import("//args.gni")
 }
diff --git a/src/test_driver/efr32/BUILD.gn b/src/test_driver/efr32/BUILD.gn
index d794b4b0ef2485..45e4aff6fe40a7 100644
--- a/src/test_driver/efr32/BUILD.gn
+++ b/src/test_driver/efr32/BUILD.gn
@@ -88,21 +88,15 @@ efr32_executable("efr32_device_tests") {
     "${chip_root}/src:tests",
     "${chip_root}/src/lib",
     "${chip_root}/src/lib/support:testing",
-    "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
-    "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
     "${examples_plat_dir}/pw_sys_io:pw_sys_io_efr32",
     "${nlunit_test_root}:nlunit-test",
   ]
 
-  if (chip_openthread_ftd) {
+  # OpenThread Settings
+  if (chip_enable_openthread) {
     deps += [
-      "${chip_root}/third_party/openthread/repo:libopenthread-cli-ftd",
-      "${chip_root}/third_party/openthread/repo:libopenthread-ftd",
-    ]
-  } else {
-    deps += [
-      "${chip_root}/third_party/openthread/repo:libopenthread-cli-mtd",
-      "${chip_root}/third_party/openthread/repo:libopenthread-mtd",
+      "${chip_root}/third_party/openthread:openthread",
+      "${examples_plat_dir}:efr-matter-shell",
     ]
   }
 
diff --git a/src/test_driver/efr32/args.gni b/src/test_driver/efr32/args.gni
index 8addd1383ed934..8db9c5e87eb212 100644
--- a/src/test_driver/efr32/args.gni
+++ b/src/test_driver/efr32/args.gni
@@ -27,6 +27,9 @@ chip_enable_openthread = true
 chip_openthread_ftd = true
 chip_monolithic_tests = true
 
+openthread_external_platform =
+    "${chip_root}/third_party/openthread/platforms/efr32:libopenthread-efr32"
+
 #Fix me : Test driver should use same config as examples
 # Problem : Linker issue if set to true
 chip_system_config_use_open_thread_inet_endpoints = false
diff --git a/src/test_driver/efr32/include/AppConfig.h b/src/test_driver/efr32/include/AppConfig.h
index 302dba47799e5e..3b83d375b46219 100644
--- a/src/test_driver/efr32/include/AppConfig.h
+++ b/src/test_driver/efr32/include/AppConfig.h
@@ -25,7 +25,7 @@
 extern "C" {
 #endif
 
-void efr32LogInit(void);
+void efr32InitLog(void);
 void efr32Log(const char * aFormat, ...);
 #define EFR32_LOG(...) efr32Log(__VA_ARGS__);
 void appError(int err);
diff --git a/third_party/openthread/BUILD.gn b/third_party/openthread/BUILD.gn
new file mode 100644
index 00000000000000..752f245738a750
--- /dev/null
+++ b/third_party/openthread/BUILD.gn
@@ -0,0 +1,25 @@
+import("//build_overrides/chip.gni")
+import("//build_overrides/openthread.gni")
+
+import("${chip_root}/src/platform/device.gni")
+
+declare_args() {
+  # Use a different target, such as a prebuilt Thread library.
+  chip_openthread_target = ""
+}
+
+group("openthread") {
+  if (chip_openthread_target != "") {
+    public_deps = [ chip_openthread_target ]
+  } else {
+    public_deps = [
+      "${chip_root}/third_party/openthread/platforms:libopenthread-platform",
+      "${chip_root}/third_party/openthread/platforms:libopenthread-platform-utils",
+    ]
+    if (chip_openthread_ftd) {
+      public_deps += [ "${openthread_root}:libopenthread-ftd" ]
+    } else {
+      public_deps += [ "${openthread_root}:libopenthread-mtd" ]
+    }
+  }
+}
diff --git a/third_party/openthread/ot-efr32 b/third_party/openthread/ot-efr32
index 7a567da02a0785..fd77faf7a3443f 160000
--- a/third_party/openthread/ot-efr32
+++ b/third_party/openthread/ot-efr32
@@ -1 +1 @@
-Subproject commit 7a567da02a078546eb34136c1c44170c8832dd55
+Subproject commit fd77faf7a3443f7941dfd9e9713aea09eb08e9b9
diff --git a/third_party/openthread/platforms/efr32/BUILD.gn b/third_party/openthread/platforms/efr32/BUILD.gn
index 140070a57b9d8a..b6dba5b98d4351 100644
--- a/third_party/openthread/platforms/efr32/BUILD.gn
+++ b/third_party/openthread/platforms/efr32/BUILD.gn
@@ -37,9 +37,9 @@ config("openthread_efr32_config") {
 
 source_set("openthread_core_config_efr32") {
   sources = [
+    "${openthread_efr32_root}/openthread/src/cli/cli_config.h",
     "${openthread_efr32_root}/src/src/openthread-core-efr32-config-check.h",
     "${openthread_efr32_root}/src/src/openthread-core-efr32-config.h",
-    "${openthread_root}/src/cli/cli_config.h",
   ]
 
   public_deps = [ "${efr32_sdk_build_root}:efr32_sdk" ]
@@ -49,6 +49,7 @@ source_set("openthread_core_config_efr32") {
 
 source_set("libopenthread-efr32") {
   sources = [
+    "${openthread_efr32_root}/openthread/examples/apps/cli/cli_uart.cpp",
     "${openthread_efr32_root}/src/src/alarm.c",
     "${openthread_efr32_root}/src/src/crypto.c",
     "${openthread_efr32_root}/src/src/entropy.c",
@@ -58,12 +59,11 @@ source_set("libopenthread-efr32") {
     "${openthread_efr32_root}/src/src/security_manager.c",
     "${openthread_efr32_root}/src/src/sleep.c",
     "${openthread_efr32_root}/src/src/system.c",
-    "${openthread_root}/examples/apps/cli/cli_uart.cpp",
   ]
 
   public_deps = [
     ":openthread_core_config_efr32",
-    "${openthread_root}/src/core:libopenthread_core_headers",
+    "${openthread_efr32_root}/openthread/src/core:libopenthread_core_headers",
     "..:libopenthread-platform",
     "..:libopenthread-platform-utils",
   ]
diff --git a/third_party/silabs/BUILD.gn b/third_party/silabs/BUILD.gn
index 718852a0a2f235..c4f96d18d339f5 100644
--- a/third_party/silabs/BUILD.gn
+++ b/third_party/silabs/BUILD.gn
@@ -12,12 +12,17 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+import("//build_overrides/chip.gni")
 import("//build_overrides/efr32_sdk.gni")
+import("//build_overrides/jlink.gni")
+import("${chip_root}/src/platform/device.gni")
 import("${efr32_sdk_build_root}/efr32_sdk.gni")
 
 declare_args() {
   # Build target to use for efr32 SDK. Use this to set global SDK defines.
   efr32_sdk_target = ""
+  sl_ot_efr32_root = "${chip_root}/third_party/openthread/ot-efr32"
+  sl_openthread_root = "${chip_root}/third_party/openthread/ot-efr32/openthread"
 }
 
 assert(efr32_sdk_target != "", "efr32_sdk_target must be specified")
@@ -25,3 +30,136 @@ assert(efr32_sdk_target != "", "efr32_sdk_target must be specified")
 group("efr32_sdk") {
   public_deps = [ efr32_sdk_target ]
 }
+
+if (chip_enable_openthread) {
+  group("openthread_cli") {
+    if (!use_silabs_thread_lib) {
+      if (chip_openthread_ftd) {
+        public_deps = [ "${sl_openthread_root}:libopenthread-cli-ftd" ]
+      } else {
+        public_deps = [ "${sl_openthread_root}:libopenthread-cli-mtd" ]
+      }
+    }
+  }
+}
+
+if (use_silabs_thread_lib) {
+  config("libopenthread-platform_config") {
+    include_dirs = [ "${sl_openthread_root}/examples/platforms" ]
+  }
+
+  copy("copy_openthread_system") {
+    sources = [ "${sl_openthread_root}/examples/platforms/openthread-system.h" ]
+
+    outputs =
+        [ "${root_gen_dir}/include/openthread/platform/{{source_file_part}}" ]
+  }
+
+  source_set("openthread_system") {
+    sources =
+        [ "${root_gen_dir}/include/openthread/platform/openthread-system.h" ]
+    deps = [ ":copy_openthread_system" ]
+  }
+
+  source_set("libopenthread-platform") {
+    sources = [ "${sl_openthread_root}/examples/platforms/openthread-system.h" ]
+
+    public_deps = [ ":openthread_system" ]
+
+    public_configs = [ ":libopenthread-platform_config" ]
+  }
+
+  config("openthread_efr32_config") {
+    defines = [
+      "RADIO_CONFIG_DMP_SUPPORT=1",
+      "${efr32_board}=1",
+      "${efr32_mcu}",
+      "USE_SL_THREAD_CERT_LIB",
+      "OPENTHREAD_CORE_CONFIG_PLATFORM_CHECK_FILE=\"openthread-core-efr32-config-check.h\"",
+    ]
+
+    include_dirs = [
+      "${chip_root}/examples/platform/efr32",
+      "${sdk_support_root}/matter/efr32/${efr32_family}/${efr32_board}",
+      "${sl_ot_efr32_root}/src/src",
+      "${sl_openthread_root}/src/",
+    ]
+  }
+
+  source_set("openthread_core_config_efr32") {
+    sources = [
+      "${sl_openthread_root}/src/cli/cli_config.h",
+      "${sl_ot_efr32_root}/src/src/openthread-core-efr32-config-check.h",
+      "${sl_ot_efr32_root}/src/src/openthread-core-efr32-config.h",
+    ]
+
+    public_deps = [
+      ":libopenthread-platform",
+      "${efr32_sdk_build_root}:efr32_sdk",
+    ]
+
+    public_configs = [ ":openthread_efr32_config" ]
+  }
+
+  source_set("ot-efr32-cert") {
+    sources = [
+      "${sl_openthread_root}/examples/apps/cli/cli_uart.cpp",
+      "${sl_openthread_root}/src/cli/cli.cpp",
+      "${sl_openthread_root}/src/cli/cli.hpp",
+      "${sl_openthread_root}/src/cli/cli_coap.cpp",
+      "${sl_openthread_root}/src/cli/cli_coap.hpp",
+      "${sl_openthread_root}/src/cli/cli_coap_secure.cpp",
+      "${sl_openthread_root}/src/cli/cli_coap_secure.hpp",
+      "${sl_openthread_root}/src/cli/cli_commissioner.cpp",
+      "${sl_openthread_root}/src/cli/cli_commissioner.hpp",
+      "${sl_openthread_root}/src/cli/cli_config.h",
+      "${sl_openthread_root}/src/cli/cli_dataset.cpp",
+      "${sl_openthread_root}/src/cli/cli_dataset.hpp",
+      "${sl_openthread_root}/src/cli/cli_history.cpp",
+      "${sl_openthread_root}/src/cli/cli_history.hpp",
+      "${sl_openthread_root}/src/cli/cli_joiner.cpp",
+      "${sl_openthread_root}/src/cli/cli_joiner.hpp",
+      "${sl_openthread_root}/src/cli/cli_network_data.cpp",
+      "${sl_openthread_root}/src/cli/cli_network_data.hpp",
+      "${sl_openthread_root}/src/cli/cli_output.cpp",
+      "${sl_openthread_root}/src/cli/cli_output.hpp",
+      "${sl_openthread_root}/src/cli/cli_srp_client.cpp",
+      "${sl_openthread_root}/src/cli/cli_srp_client.hpp",
+      "${sl_openthread_root}/src/cli/cli_srp_server.cpp",
+      "${sl_openthread_root}/src/cli/cli_srp_server.hpp",
+      "${sl_openthread_root}/src/cli/cli_tcp.cpp",
+      "${sl_openthread_root}/src/cli/cli_tcp.hpp",
+      "${sl_openthread_root}/src/cli/cli_udp.cpp",
+      "${sl_openthread_root}/src/cli/cli_udp.hpp",
+      "${sl_openthread_root}/src/cli/x509_cert_key.hpp",
+    ]
+
+    public_configs = [
+      ":openthread_efr32_config",
+      ":libopenthread-platform_config",
+    ]
+
+    public_deps = [
+      ":libopenthread-platform",
+      ":openthread_core_config_efr32",
+      "${segger_rtt_root}:segger_rtt",
+      "${sl_openthread_root}/include/openthread:openthread",
+      "${sl_openthread_root}/src/core/:libopenthread_core_headers",
+    ]
+
+    deps = [ "${efr32_sdk_build_root}:efr32_sdk" ]
+
+    # selected thread device type FTD or MTD
+    XTD = "ftd"
+    if (!chip_openthread_ftd) {
+      XTD = "mtd"
+    }
+
+    public_configs += [ "${sl_openthread_root}:openthread_${XTD}_config" ]
+
+    libs = [
+      "${sl_ot_efr32_root}/libs/libsl_ot_stack_${XTD}_${efr32_family}_gcc.a",
+      "${sl_ot_efr32_root}/libs/libsl_platform_${XTD}_dmp_${efr32_family}_gcc.a",
+    ]
+  }
+}
diff --git a/third_party/silabs/efr32_sdk.gni b/third_party/silabs/efr32_sdk.gni
index e4af7e65333a28..727ecea7acd5ef 100644
--- a/third_party/silabs/efr32_sdk.gni
+++ b/third_party/silabs/efr32_sdk.gni
@@ -24,6 +24,9 @@ declare_args() {
   # Location of the efr32 SDK.
   efr32_sdk_root = "${chip_root}/third_party/silabs/gecko_sdk"
   sdk_support_root = "${chip_root}/third_party/silabs/matter_support"
+
+  #Build openthread with prebuilt silabs lib
+  use_silabs_thread_lib = false
   enable_openthread_cli = true
   kvs_max_entries = 75