diff --git a/drivers/net/wireless/realtek/rtw89/coex.c b/drivers/net/wireless/realtek/rtw89/coex.c
index f97ddbcb5104..eec1f5228c5d 100644
--- a/drivers/net/wireless/realtek/rtw89/coex.c
+++ b/drivers/net/wireless/realtek/rtw89/coex.c
@@ -1032,12 +1032,14 @@ static u32 _chk_btc_report(struct rtw89_dev *rtwdev,
 		break;
 	case BTC_RPT_TYPE_NULLSTA:
 		pcinfo = &pfwinfo->rpt_fbtc_nullsta.cinfo;
-		if (chip->chip_id == RTL8852A) {
+		if (ver->fcxnullsta == 1) {
 			pfinfo = &pfwinfo->rpt_fbtc_nullsta.finfo;
-			pcinfo->req_len = sizeof(pfwinfo->rpt_fbtc_nullsta.finfo);
+			pcinfo->req_len = sizeof(pfwinfo->rpt_fbtc_nullsta.finfo.v1);
+		} else if (ver->fcxnullsta == 2) {
+			pfinfo = &pfwinfo->rpt_fbtc_nullsta.finfo.v2;
+			pcinfo->req_len = sizeof(pfwinfo->rpt_fbtc_nullsta.finfo.v2);
 		} else {
-			pfinfo = &pfwinfo->rpt_fbtc_nullsta.finfo_v1;
-			pcinfo->req_len = sizeof(pfwinfo->rpt_fbtc_nullsta.finfo_v1);
+			goto err;
 		}
 		pcinfo->req_fver = ver->fcxnullsta;
 		break;
@@ -6789,12 +6791,11 @@ static void _show_fbtc_cysta_v4(struct rtw89_dev *rtwdev, struct seq_file *m)
 
 static void _show_fbtc_nullsta(struct rtw89_dev *rtwdev, struct seq_file *m)
 {
-	const struct rtw89_chip_info *chip = rtwdev->chip;
 	struct rtw89_btc *btc = &rtwdev->btc;
+	const struct rtw89_btc_ver *ver = btc->ver;
 	struct rtw89_btc_btf_fwinfo *pfwinfo = &btc->fwinfo;
 	struct rtw89_btc_rpt_cmn_info *pcinfo;
-	struct rtw89_btc_fbtc_cynullsta *ns;
-	struct rtw89_btc_fbtc_cynullsta_v1 *ns_v1;
+	union rtw89_btc_fbtc_cynullsta_info *ns;
 	u8 i = 0;
 
 	if (!btc->dm.tdma_now.rxflctrl)
@@ -6804,9 +6805,8 @@ static void _show_fbtc_nullsta(struct rtw89_dev *rtwdev, struct seq_file *m)
 	if (!pcinfo->valid)
 		return;
 
-	if (chip->chip_id == RTL8852A) {
-		ns = &pfwinfo->rpt_fbtc_nullsta.finfo;
-
+	ns = &pfwinfo->rpt_fbtc_nullsta.finfo;
+	if (ver->fcxnullsta == 1) {
 		seq_printf(m, " %-15s : ", "[null_sta]");
 
 		for (i = 0; i < 2; i++) {
@@ -6815,46 +6815,43 @@ static void _show_fbtc_nullsta(struct rtw89_dev *rtwdev, struct seq_file *m)
 			else
 				seq_printf(m, "null-%d", i);
 			seq_printf(m, "[ok:%d/",
-				   le32_to_cpu(ns->result[i][1]));
+				   le32_to_cpu(ns->v1.result[i][1]));
 			seq_printf(m, "fail:%d/",
-				   le32_to_cpu(ns->result[i][0]));
+				   le32_to_cpu(ns->v1.result[i][0]));
 			seq_printf(m, "on_time:%d/",
-				   le32_to_cpu(ns->result[i][2]));
+				   le32_to_cpu(ns->v1.result[i][2]));
 			seq_printf(m, "retry:%d/",
-				   le32_to_cpu(ns->result[i][3]));
+				   le32_to_cpu(ns->v1.result[i][3]));
 			seq_printf(m, "avg_t:%d.%03d/",
-				   le32_to_cpu(ns->avg_t[i]) / 1000,
-				   le32_to_cpu(ns->avg_t[i]) % 1000);
+				   le32_to_cpu(ns->v1.avg_t[i]) / 1000,
+				   le32_to_cpu(ns->v1.avg_t[i]) % 1000);
 			seq_printf(m, "max_t:%d.%03d]",
-				   le32_to_cpu(ns->max_t[i]) / 1000,
-				   le32_to_cpu(ns->max_t[i]) % 1000);
+				   le32_to_cpu(ns->v1.max_t[i]) / 1000,
+				   le32_to_cpu(ns->v1.max_t[i]) % 1000);
 		}
 	} else {
-		ns_v1 = &pfwinfo->rpt_fbtc_nullsta.finfo_v1;
-
 		seq_printf(m, " %-15s : ", "[null_sta]");
-
 		for (i = 0; i < 2; i++) {
 			if (i != 0)
 				seq_printf(m, ", null-%d", i);
 			else
 				seq_printf(m, "null-%d", i);
 			seq_printf(m, "[Tx:%d/",
-				   le32_to_cpu(ns_v1->result[i][4]));
+				   le32_to_cpu(ns->v2.result[i][4]));
 			seq_printf(m, "[ok:%d/",
-				   le32_to_cpu(ns_v1->result[i][1]));
+				   le32_to_cpu(ns->v2.result[i][1]));
 			seq_printf(m, "fail:%d/",
-				   le32_to_cpu(ns_v1->result[i][0]));
+				   le32_to_cpu(ns->v2.result[i][0]));
 			seq_printf(m, "on_time:%d/",
-				   le32_to_cpu(ns_v1->result[i][2]));
+				   le32_to_cpu(ns->v2.result[i][2]));
 			seq_printf(m, "retry:%d/",
-				   le32_to_cpu(ns_v1->result[i][3]));
+				   le32_to_cpu(ns->v2.result[i][3]));
 			seq_printf(m, "avg_t:%d.%03d/",
-				   le32_to_cpu(ns_v1->avg_t[i]) / 1000,
-				   le32_to_cpu(ns_v1->avg_t[i]) % 1000);
+				   le32_to_cpu(ns->v2.avg_t[i]) / 1000,
+				   le32_to_cpu(ns->v2.avg_t[i]) % 1000);
 			seq_printf(m, "max_t:%d.%03d]",
-				   le32_to_cpu(ns_v1->max_t[i]) / 1000,
-				   le32_to_cpu(ns_v1->max_t[i]) % 1000);
+				   le32_to_cpu(ns->v2.max_t[i]) / 1000,
+				   le32_to_cpu(ns->v2.max_t[i]) % 1000);
 		}
 	}
 	seq_puts(m, "\n");
diff --git a/drivers/net/wireless/realtek/rtw89/core.h b/drivers/net/wireless/realtek/rtw89/core.h
index d0b4c0032457..dfde8801e97b 100644
--- a/drivers/net/wireless/realtek/rtw89/core.h
+++ b/drivers/net/wireless/realtek/rtw89/core.h
@@ -1865,7 +1865,7 @@ union rtw89_btc_fbtc_cysta_info {
 	struct rtw89_btc_fbtc_cysta_v4 v4;
 };
 
-struct rtw89_btc_fbtc_cynullsta { /* cycle null statistics */
+struct rtw89_btc_fbtc_cynullsta_v1 { /* cycle null statistics */
 	u8 fver; /* btc_ver::fcxnullsta */
 	u8 rsvd;
 	__le16 rsvd2;
@@ -1874,7 +1874,7 @@ struct rtw89_btc_fbtc_cynullsta { /* cycle null statistics */
 	__le32 result[2][4]; /* 0:fail, 1:ok, 2:on_time, 3:retry */
 } __packed;
 
-struct rtw89_btc_fbtc_cynullsta_v1 { /* cycle null statistics */
+struct rtw89_btc_fbtc_cynullsta_v2 { /* cycle null statistics */
 	u8 fver; /* btc_ver::fcxnullsta */
 	u8 rsvd;
 	__le16 rsvd2;
@@ -1883,6 +1883,11 @@ struct rtw89_btc_fbtc_cynullsta_v1 { /* cycle null statistics */
 	__le32 result[2][5]; /* 0:fail, 1:ok, 2:on_time, 3:retry, 4:tx */
 } __packed;
 
+union rtw89_btc_fbtc_cynullsta_info {
+	struct rtw89_btc_fbtc_cynullsta_v1 v1; /* info from fw */
+	struct rtw89_btc_fbtc_cynullsta_v2 v2;
+};
+
 struct rtw89_btc_fbtc_btver {
 	u8 fver; /* btc_ver::fcxbtver */
 	u8 rsvd;
@@ -2075,10 +2080,7 @@ struct rtw89_btc_rpt_fbtc_step {
 
 struct rtw89_btc_rpt_fbtc_nullsta {
 	struct rtw89_btc_rpt_cmn_info cinfo; /* common info, by driver */
-	union {
-		struct rtw89_btc_fbtc_cynullsta finfo; /* info from fw */
-		struct rtw89_btc_fbtc_cynullsta_v1 finfo_v1; /* info from fw */
-	};
+	union rtw89_btc_fbtc_cynullsta_info finfo;
 };
 
 struct rtw89_btc_rpt_fbtc_mreg {