diff --git a/components/bt/controller/esp32c2/bt.c b/components/bt/controller/esp32c2/bt.c
index 2734bb0528..f42246b72c 100644
--- a/components/bt/controller/esp32c2/bt.c
+++ b/components/bt/controller/esp32c2/bt.c
@@ -447,6 +447,17 @@ static DRAM_ATTR modem_clock_lpclk_src_t s_bt_lpclk_src = MODEM_CLOCK_LPCLK_SRC_
 
 #define BLE_RTC_DELAY_US                    (1800)
 
+#define BLE_CONTROLLER_MALLOC_CAPS          (MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT|MALLOC_CAP_DMA)
+void *malloc_ble_controller_mem(size_t size)
+{
+    return heap_caps_malloc(size, BLE_CONTROLLER_MALLOC_CAPS);
+}
+
+uint32_t get_ble_controller_free_heap_size(void)
+{
+    return heap_caps_get_free_size(BLE_CONTROLLER_MALLOC_CAPS);
+}
+
 static const struct osi_coex_funcs_t s_osi_coex_funcs_ro = {
     ._magic = OSI_COEX_MAGIC_VALUE,
     ._version = OSI_COEX_VERSION,