diff --git a/boards/silabs/dev_kits/sltb010a/Kconfig.defconfig b/boards/silabs/dev_kits/sltb010a/Kconfig.defconfig
index 850f2cd8538bb0..047c526aad2456 100644
--- a/boards/silabs/dev_kits/sltb010a/Kconfig.defconfig
+++ b/boards/silabs/dev_kits/sltb010a/Kconfig.defconfig
@@ -26,6 +26,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 config REGULATOR
diff --git a/boards/silabs/dev_kits/xg24_dk2601b/Kconfig.defconfig b/boards/silabs/dev_kits/xg24_dk2601b/Kconfig.defconfig
index 098b80000ac657..c25c07667bdb2d 100644
--- a/boards/silabs/dev_kits/xg24_dk2601b/Kconfig.defconfig
+++ b/boards/silabs/dev_kits/xg24_dk2601b/Kconfig.defconfig
@@ -31,6 +31,9 @@ config COMMON_LIBC_MALLOC_ARENA_SIZE
 config MAIN_STACK_SIZE
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 if SHELL
 
 config SHELL_STACK_SIZE
diff --git a/boards/silabs/dev_kits/xg27_dk2602a/Kconfig.defconfig b/boards/silabs/dev_kits/xg27_dk2602a/Kconfig.defconfig
index 850f2cd8538bb0..047c526aad2456 100644
--- a/boards/silabs/dev_kits/xg27_dk2602a/Kconfig.defconfig
+++ b/boards/silabs/dev_kits/xg27_dk2602a/Kconfig.defconfig
@@ -26,6 +26,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 config REGULATOR
diff --git a/boards/silabs/radio_boards/slwrb4104a/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4104a/Kconfig.defconfig
index 37a549f4fa7ea6..da53255b603603 100644
--- a/boards/silabs/radio_boards/slwrb4104a/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4104a/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4104A
diff --git a/boards/silabs/radio_boards/slwrb4161a/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4161a/Kconfig.defconfig
index 0c706e35bcbfab..e7bfc1885bcb1a 100644
--- a/boards/silabs/radio_boards/slwrb4161a/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4161a/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4161A
diff --git a/boards/silabs/radio_boards/slwrb4170a/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4170a/Kconfig.defconfig
index b9054a3c46c515..34103dcc641322 100644
--- a/boards/silabs/radio_boards/slwrb4170a/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4170a/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4170A
diff --git a/boards/silabs/radio_boards/slwrb4180a/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4180a/Kconfig.defconfig
index 5f917d659c6c64..12d90d41658370 100644
--- a/boards/silabs/radio_boards/slwrb4180a/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4180a/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4180A
diff --git a/boards/silabs/radio_boards/slwrb4250b/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4250b/Kconfig.defconfig
index 489fc5c7a6989a..812500d7c5cf5c 100644
--- a/boards/silabs/radio_boards/slwrb4250b/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4250b/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4250B
diff --git a/boards/silabs/radio_boards/slwrb4255a/Kconfig.defconfig b/boards/silabs/radio_boards/slwrb4255a/Kconfig.defconfig
index c0ac1bf3b3af38..08070b2f94bab0 100644
--- a/boards/silabs/radio_boards/slwrb4255a/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/slwrb4255a/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_SLWRB4255A
diff --git a/boards/silabs/radio_boards/xg24_rb4187c/Kconfig.defconfig b/boards/silabs/radio_boards/xg24_rb4187c/Kconfig.defconfig
index 0d0d7b04ce2831..2e8ea4fdeae89b 100644
--- a/boards/silabs/radio_boards/xg24_rb4187c/Kconfig.defconfig
+++ b/boards/silabs/radio_boards/xg24_rb4187c/Kconfig.defconfig
@@ -37,6 +37,9 @@ config MAIN_STACK_SIZE
 	default 3072 if PM
 	default 2304
 
+config BT_SEND_ECC_EMULATION
+	default y
+
 endif # BT
 
 endif # BOARD_XG24_RB4187C