diff --git a/examples/platform/silabs/efr32/rs911x/hal/rsi_hal_mcu_timer.c b/examples/platform/silabs/efr32/rs911x/hal/rsi_hal_mcu_timer.c
index c6d6381932d3ea..7a800728176081 100644
--- a/examples/platform/silabs/efr32/rs911x/hal/rsi_hal_mcu_timer.c
+++ b/examples/platform/silabs/efr32/rs911x/hal/rsi_hal_mcu_timer.c
@@ -138,6 +138,21 @@ int32_t rsi_timer_start(uint8_t timer_node, uint8_t mode, uint8_t type, uint32_t
 
     return RSI_ERROR_NONE;
 }
+/*==============================================*/
+/**
+ * @fn          uint32_t rsi_ms_to_tick(uint32_t timeout_ms)
+ * @brief       Converting ms to os ticks
+ * @param[in]   timeout_ms - timeout in ms
+ * @return      uint32_t
+ */
+uint32_t rsi_ms_to_tick(uint32_t timeout_ms)
+{
+    uint32_t ticks_cnt = 0, ticks_val = 0, ticks = 0;
+    ticks_cnt = SysTick->LOAD + 1UL;
+    ticks_val = SystemCoreClock / ticks_cnt;
+    ticks     = ticks_val / 1000;
+    return (timeout_ms * ticks);
+}
 #else /* _use_the_rsi_defined_functions */
 
 /* Counts 1ms timeTicks */
diff --git a/third_party/silabs/wiseconnect-wifi-bt-sdk b/third_party/silabs/wiseconnect-wifi-bt-sdk
index 90f424f494baea..c3843e95e63f84 160000
--- a/third_party/silabs/wiseconnect-wifi-bt-sdk
+++ b/third_party/silabs/wiseconnect-wifi-bt-sdk
@@ -1 +1 @@
-Subproject commit 90f424f494baea157f90836e38ae35754045bfc3
+Subproject commit c3843e95e63f84e301a2727f7b3c26125818b53a