From 1228063e1bb07c33b407b68cbb4e6a39e8a8e06d Mon Sep 17 00:00:00 2001
From: Jean-Francois Penven <67962328+jepenven-silabs@users.noreply.github.com>
Date: Thu, 15 Dec 2022 16:15:51 +0100
Subject: [PATCH] Fix MLE Timeout (#23829)

---
 .../platform/silabs/efr32/project_include/OpenThreadConfig.h | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/examples/platform/silabs/efr32/project_include/OpenThreadConfig.h b/examples/platform/silabs/efr32/project_include/OpenThreadConfig.h
index 76842d5783dbc1..c8f39692a69b0e 100644
--- a/examples/platform/silabs/efr32/project_include/OpenThreadConfig.h
+++ b/examples/platform/silabs/efr32/project_include/OpenThreadConfig.h
@@ -39,7 +39,10 @@
 #if CHIP_DEVICE_CONFIG_ENABLE_SED
 #define OPENTHREAD_CONFIG_PARENT_SEARCH_ENABLE 0
 // In seconds
-#define OPENTHREAD_CONFIG_MLE_CHILD_TIMEOUT_DEFAULT (SL_SLEEP_TIME_MS / 1000)
+#define SL_MLE_TIMEOUT_seconds (SL_SLEEP_TIME_MS / 1000)
+
+// Timeout after 2 missed checkin or 4 mins if sleep interval is too short.
+#define OPENTHREAD_CONFIG_MLE_CHILD_TIMEOUT_DEFAULT ((SL_MLE_TIMEOUT_seconds < 120) ? 240 : ((SL_MLE_TIMEOUT_seconds * 2) + 1))
 #endif
 
 /****Uncomment below section for OpenThread Debug logs*/