diff --git a/drivers/net/wireless/realtek/rtw89/chan.c b/drivers/net/wireless/realtek/rtw89/chan.c
index a9f0133f8089..e0f1c89bbfa6 100644
--- a/drivers/net/wireless/realtek/rtw89/chan.c
+++ b/drivers/net/wireless/realtek/rtw89/chan.c
@@ -138,3 +138,19 @@ void rtw89_config_entity_chandef(struct rtw89_dev *rtwdev,
 {
 	__rtw89_config_entity_chandef(rtwdev, idx, chandef, true);
 }
+
+static void rtw89_config_default_chandef(struct rtw89_dev *rtwdev)
+{
+	struct cfg80211_chan_def chandef = {0};
+
+	rtw89_get_default_chandef(&chandef);
+	__rtw89_config_entity_chandef(rtwdev, RTW89_SUB_ENTITY_0, &chandef, false);
+}
+
+void rtw89_entity_init(struct rtw89_dev *rtwdev)
+{
+	struct rtw89_hal *hal = &rtwdev->hal;
+
+	bitmap_zero(hal->entity_map, NUM_OF_RTW89_SUB_ENTITY);
+	rtw89_config_default_chandef(rtwdev);
+}
diff --git a/drivers/net/wireless/realtek/rtw89/chan.h b/drivers/net/wireless/realtek/rtw89/chan.h
index b2022bb0afc6..9c714f00c3c1 100644
--- a/drivers/net/wireless/realtek/rtw89/chan.h
+++ b/drivers/net/wireless/realtek/rtw89/chan.h
@@ -29,5 +29,6 @@ bool rtw89_assign_entity_chan(struct rtw89_dev *rtwdev,
 void rtw89_config_entity_chandef(struct rtw89_dev *rtwdev,
 				 enum rtw89_sub_entity_idx idx,
 				 const struct cfg80211_chan_def *chandef);
+void rtw89_entity_init(struct rtw89_dev *rtwdev);
 
 #endif
diff --git a/drivers/net/wireless/realtek/rtw89/core.c b/drivers/net/wireless/realtek/rtw89/core.c
index 4c25fef476e0..04ba705a14a7 100644
--- a/drivers/net/wireless/realtek/rtw89/core.c
+++ b/drivers/net/wireless/realtek/rtw89/core.c
@@ -225,6 +225,12 @@ static void rtw89_traffic_stats_accu(struct rtw89_dev *rtwdev,
 	}
 }
 
+void rtw89_get_default_chandef(struct cfg80211_chan_def *chandef)
+{
+	cfg80211_chandef_create(chandef, &rtw89_channels_2ghz[0],
+				NL80211_CHAN_NO_HT);
+}
+
 static void rtw89_get_channel_params(const struct cfg80211_chan_def *chandef,
 				     struct rtw89_chan *chan)
 {
@@ -2935,6 +2941,7 @@ int rtw89_core_init(struct rtw89_dev *rtwdev)
 		return ret;
 	}
 	rtw89_ser_init(rtwdev);
+	rtw89_entity_init(rtwdev);
 
 	return 0;
 }
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index f8027b9a36a0..3b6660d76f79 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -3955,6 +3955,7 @@ void rtw89_core_deinit(struct rtw89_dev *rtwdev);
 int rtw89_core_register(struct rtw89_dev *rtwdev);
 void rtw89_core_unregister(struct rtw89_dev *rtwdev);
 void rtw89_core_set_chip_txpwr(struct rtw89_dev *rtwdev);
+void rtw89_get_default_chandef(struct cfg80211_chan_def *chandef);
 void rtw89_set_channel(struct rtw89_dev *rtwdev);
 u8 rtw89_core_acquire_bit_map(unsigned long *addr, unsigned long size);
 void rtw89_core_release_bit_map(unsigned long *addr, u8 bit);
diff --git a/drivers/net/wireless/realtek/rtw89/ser.c b/drivers/net/wireless/realtek/rtw89/ser.c
index 726223f25dc6..74af916ac742 100644
--- a/drivers/net/wireless/realtek/rtw89/ser.c
+++ b/drivers/net/wireless/realtek/rtw89/ser.c
@@ -5,6 +5,7 @@
 #include <linux/devcoredump.h>
 
 #include "cam.h"
+#include "chan.h"
 #include "debug.h"
 #include "fw.h"
 #include "mac.h"
@@ -601,6 +602,7 @@ static void ser_l2_reset_st_pre_hdl(struct rtw89_ser *ser)
 
 	ser_reset_mac_binding(rtwdev);
 	rtw89_core_stop(rtwdev);
+	rtw89_entity_init(rtwdev);
 	INIT_LIST_HEAD(&rtwdev->rtwvifs_list);
 }