diff --git a/drivers/net/wireless/ath/ath12k/acpi.c b/drivers/net/wireless/ath/ath12k/acpi.c
index 231b4eb92a5d..d81367ce6929 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.c
+++ b/drivers/net/wireless/ath/ath12k/acpi.c
@@ -37,6 +37,24 @@ static int ath12k_acpi_dsm_get_data(struct ath12k_base *ab, int func)
 			ab->acpi.bit_flag = obj->integer.value;
 			break;
 		}
+	} else if (obj->type == ACPI_TYPE_STRING) {
+		switch (func) {
+		case ATH12K_ACPI_DSM_FUNC_BDF_EXT:
+			if (obj->string.length <= ATH12K_ACPI_BDF_ANCHOR_STRING_LEN ||
+			    obj->string.length > ATH12K_ACPI_BDF_MAX_LEN ||
+			    memcmp(obj->string.pointer, ATH12K_ACPI_BDF_ANCHOR_STRING,
+				   ATH12K_ACPI_BDF_ANCHOR_STRING_LEN)) {
+				ath12k_warn(ab, "invalid ACPI DSM BDF size: %d\n",
+					    obj->string.length);
+				ret = -EINVAL;
+				goto out;
+			}
+
+			memcpy(ab->acpi.bdf_string, obj->string.pointer,
+			       obj->buffer.length);
+
+			break;
+		}
 	} else if (obj->type == ACPI_TYPE_BUFFER) {
 		switch (func) {
 		case ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS:
@@ -341,6 +359,8 @@ int ath12k_acpi_start(struct ath12k_base *ab)
 	ab->acpi.acpi_bios_sar_enable = false;
 	ab->acpi.acpi_cca_enable = false;
 	ab->acpi.acpi_band_edge_enable = false;
+	ab->acpi.acpi_enable_bdf = false;
+	ab->acpi.bdf_string[0] = '\0';
 
 	if (!ab->hw_params->acpi_guid)
 		/* not supported with this hardware */
@@ -368,6 +388,16 @@ int ath12k_acpi_start(struct ath12k_base *ab)
 			ab->acpi.acpi_disable_rfkill = true;
 	}
 
+	if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acpi, ATH12K_ACPI_FUNC_BIT_BDF_EXT)) {
+		ret = ath12k_acpi_dsm_get_data(ab, ATH12K_ACPI_DSM_FUNC_BDF_EXT);
+		if (ret || ab->acpi.bdf_string[0] == '\0') {
+			ath12k_warn(ab, "failed to get ACPI BDF EXT: %d\n", ret);
+			return ret;
+		}
+
+		ab->acpi.acpi_enable_bdf = true;
+	}
+
 	if (ATH12K_ACPI_FUNC_BIT_VALID(ab->acpi, ATH12K_ACPI_FUNC_BIT_TAS_CFG)) {
 		ret = ath12k_acpi_dsm_get_data(ab, ATH12K_ACPI_DSM_FUNC_TAS_CFG);
 		if (ret) {
@@ -452,6 +482,21 @@ int ath12k_acpi_start(struct ath12k_base *ab)
 	return 0;
 }
 
+int ath12k_acpi_check_bdf_variant_name(struct ath12k_base *ab)
+{
+	size_t max_len = sizeof(ab->qmi.target.bdf_ext);
+
+	if (!ab->acpi.acpi_enable_bdf)
+		return -ENODATA;
+
+	if (strscpy(ab->qmi.target.bdf_ext, ab->acpi.bdf_string + 4, max_len) < 0)
+		ath12k_dbg(ab, ATH12K_DBG_BOOT,
+			   "acpi bdf variant longer than the buffer (variant: %s)\n",
+			   ab->acpi.bdf_string);
+
+	return 0;
+}
+
 void ath12k_acpi_stop(struct ath12k_base *ab)
 {
 	if (!ab->acpi.started)
diff --git a/drivers/net/wireless/ath/ath12k/acpi.h b/drivers/net/wireless/ath/ath12k/acpi.h
index 19a1a1118e82..3a26fea6af1a 100644
--- a/drivers/net/wireless/ath/ath12k/acpi.h
+++ b/drivers/net/wireless/ath/ath12k/acpi.h
@@ -10,6 +10,7 @@
 
 #define ATH12K_ACPI_DSM_FUNC_SUPPORT_FUNCS	0
 #define ATH12K_ACPI_DSM_FUNC_DISABLE_FLAG	2
+#define ATH12K_ACPI_DSM_FUNC_BDF_EXT		3
 #define ATH12K_ACPI_DSM_FUNC_BIOS_SAR		4
 #define ATH12K_ACPI_DSM_FUNC_GEO_OFFSET		5
 #define ATH12K_ACPI_DSM_FUNC_INDEX_CCA		6
@@ -18,6 +19,7 @@
 #define ATH12K_ACPI_DSM_FUNC_INDEX_BAND_EDGE		10
 
 #define ATH12K_ACPI_FUNC_BIT_DISABLE_FLAG		BIT(1)
+#define ATH12K_ACPI_FUNC_BIT_BDF_EXT			BIT(2)
 #define ATH12K_ACPI_FUNC_BIT_BIOS_SAR			BIT(3)
 #define ATH12K_ACPI_FUNC_BIT_GEO_OFFSET			BIT(4)
 #define ATH12K_ACPI_FUNC_BIT_CCA			BIT(5)
@@ -57,6 +59,10 @@
 #define ATH12K_ACPI_DSM_DISABLE_11BE_BIT	BIT(0)
 #define ATH12K_ACPI_DSM_DISABLE_RFKILL_BIT	BIT(2)
 
+#define ATH12K_ACPI_BDF_ANCHOR_STRING_LEN	3
+#define ATH12K_ACPI_BDF_ANCHOR_STRING		"BDF"
+#define ATH12K_ACPI_BDF_MAX_LEN			100
+
 #define ATH12K_ACPI_DSM_GEO_OFFSET_DATA_SIZE (ATH12K_ACPI_GEO_OFFSET_DATA_OFFSET + \
 					      ATH12K_ACPI_BIOS_SAR_GEO_OFFSET_LEN)
 #define ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE (ATH12K_ACPI_POWER_LIMIT_DATA_OFFSET + \
@@ -71,6 +77,7 @@ void ath12k_acpi_stop(struct ath12k_base *ab);
 bool ath12k_acpi_get_disable_rfkill(struct ath12k_base *ab);
 bool ath12k_acpi_get_disable_11be(struct ath12k_base *ab);
 void ath12k_acpi_set_dsm_func(struct ath12k_base *ab);
+int ath12k_acpi_check_bdf_variant_name(struct ath12k_base *ab);
 
 #else
 
@@ -97,6 +104,11 @@ static inline void ath12k_acpi_set_dsm_func(struct ath12k_base *ab)
 {
 }
 
+static inline int ath12k_acpi_check_bdf_variant_name(struct ath12k_base *ab)
+{
+	return 0;
+}
+
 #endif /* CONFIG_ACPI */
 
 #endif /* ATH12K_ACPI_H */
diff --git a/drivers/net/wireless/ath/ath12k/core.h b/drivers/net/wireless/ath/ath12k/core.h
index 79ffaa62bd2f..c34a14404865 100644
--- a/drivers/net/wireless/ath/ath12k/core.h
+++ b/drivers/net/wireless/ath/ath12k/core.h
@@ -1062,7 +1062,9 @@ struct ath12k_base {
 		bool acpi_disable_rfkill;
 		bool acpi_cca_enable;
 		bool acpi_band_edge_enable;
+		bool acpi_enable_bdf;
 		u32 bit_flag;
+		char bdf_string[ATH12K_ACPI_BDF_MAX_LEN];
 		u8 tas_cfg[ATH12K_ACPI_DSM_TAS_CFG_SIZE];
 		u8 tas_sar_power_table[ATH12K_ACPI_DSM_TAS_DATA_SIZE];
 		u8 bios_sar_data[ATH12K_ACPI_DSM_BIOS_SAR_DATA_SIZE];
diff --git a/drivers/net/wireless/ath/ath12k/qmi.c b/drivers/net/wireless/ath/ath12k/qmi.c
index c43f773c66ba..ef537c6bf0da 100644
--- a/drivers/net/wireless/ath/ath12k/qmi.c
+++ b/drivers/net/wireless/ath/ath12k/qmi.c
@@ -2745,6 +2745,10 @@ int ath12k_qmi_request_target_cap(struct ath12k_base *ab)
 		/* ACPI is optional so continue in case of an error */
 		ath12k_dbg(ab, ATH12K_DBG_BOOT, "acpi failed: %d\n", r);
 
+	r = ath12k_acpi_check_bdf_variant_name(ab);
+	if (r)
+		ath12k_dbg(ab, ATH12K_DBG_BOOT, "ACPI bdf variant name not set.\n");
+
 out:
 	return ret;
 }