diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
index 7d6e6c80b892..d3ab40fc8ab0 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.c
@@ -1023,3 +1023,37 @@ int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value)
 	kfree(data);
 	return ret;
 }
+
+int iwl_acpi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	union acpi_object *wifi_pkg, *data;
+	int ret = -ENOENT;
+	int tbl_rev;
+
+	data = iwl_acpi_get_object(fwrt->dev, ACPI_DSBR_METHOD);
+	if (IS_ERR(data))
+		return ret;
+
+	wifi_pkg = iwl_acpi_get_wifi_pkg(fwrt->dev, data,
+					 ACPI_DSBR_WIFI_DATA_SIZE,
+					 &tbl_rev);
+	if (IS_ERR(wifi_pkg))
+		goto out_free;
+
+	if (tbl_rev != ACPI_DSBR_WIFI_DATA_REV) {
+		IWL_DEBUG_RADIO(fwrt, "Unsupported ACPI DSBR revision:%d\n",
+				tbl_rev);
+		goto out_free;
+	}
+
+	if (wifi_pkg->package.elements[1].type != ACPI_TYPE_INTEGER)
+		goto out_free;
+
+	*value = wifi_pkg->package.elements[1].integer.value;
+	IWL_DEBUG_RADIO(fwrt, "Loaded DSBR config from ACPI value: 0x%x\n",
+			*value);
+	ret = 0;
+out_free:
+	kfree(data);
+	return ret;
+}
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
index bb88398a6987..e153c44d5c1d 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/acpi.h
@@ -28,6 +28,7 @@
 #define ACPI_WPFC_METHOD	"WPFC"
 #define ACPI_GLAI_METHOD	"GLAI"
 #define ACPI_WBEM_METHOD	"WBEM"
+#define ACPI_DSBR_METHOD	"DSBR"
 
 #define ACPI_WIFI_DOMAIN	(0x07)
 
@@ -74,6 +75,13 @@
  * and one for enablement of Wi-Fi 320MHz per MCC
  */
 #define ACPI_WBEM_WIFI_DATA_SIZE	2
+/*
+ * One element for domain type,
+ * and one for DSBR response data
+ */
+#define ACPI_DSBR_WIFI_DATA_SIZE	2
+#define ACPI_DSBR_WIFI_DATA_REV		1
+
 /*
  * One element for domain type,
  * and one for the status
@@ -153,6 +161,9 @@ int iwl_acpi_get_dsm(struct iwl_fw_runtime *fwrt,
 		     enum iwl_dsm_funcs func, u32 *value);
 
 int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value);
+
+int iwl_acpi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value);
+
 #else /* CONFIG_ACPI */
 
 static inline void *iwl_acpi_get_dsm_object(struct device *dev, int rev,
@@ -221,6 +232,11 @@ static inline int iwl_acpi_get_wbem(struct iwl_fw_runtime *fwrt, u32 *value)
 {
 	return -ENOENT;
 }
+
+static inline int iwl_acpi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	return -ENOENT;
+}
 #endif /* CONFIG_ACPI */
 
 #endif /* __iwl_fw_acpi__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
index c89ff380b86d..bc359a336fd6 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.c
@@ -39,6 +39,7 @@ IWL_BIOS_TABLE_LOADER_DATA(pwr_limit, u64);
 IWL_BIOS_TABLE_LOADER_DATA(mcc, char);
 IWL_BIOS_TABLE_LOADER_DATA(eckv, u32);
 IWL_BIOS_TABLE_LOADER_DATA(wbem, u32);
+IWL_BIOS_TABLE_LOADER_DATA(dsbr, u32);
 
 
 static const struct dmi_system_id dmi_ppag_approved_list[] = {
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h
index f247d31ebdd6..afdc0ec75ba5 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/regulatory.h
@@ -222,4 +222,27 @@ static inline u32 iwl_bios_get_ppag_flags(const u32 ppag_modes,
 }
 
 bool iwl_puncturing_is_allowed_in_bios(u32 puncturing, u16 mcc);
+
+#define IWL_DSBR_FW_MODIFIED_URM_MASK	BIT(8)
+#define IWL_DSBR_PERMANENT_URM_MASK	BIT(9)
+
+int iwl_bios_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value);
+
+static inline void iwl_bios_setup_step(struct iwl_trans *trans,
+				       struct iwl_fw_runtime *fwrt)
+{
+	u32 dsbr;
+
+	if (!trans->trans_cfg->integrated)
+		return;
+
+	if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_BZ)
+		return;
+
+	if (iwl_bios_get_dsbr(fwrt, &dsbr))
+		dsbr = 0;
+
+	trans->dsbr_urm_fw_dependent = !!(dsbr & IWL_DSBR_FW_MODIFIED_URM_MASK);
+	trans->dsbr_urm_permanent = !!(dsbr & IWL_DSBR_PERMANENT_URM_MASK);
+}
 #endif /* __fw_regulatory_h__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
index 02df96c3aa51..cc7659d59cf0 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.c
@@ -777,3 +777,29 @@ int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt)
 	return puncturing;
 }
 IWL_EXPORT_SYMBOL(iwl_uefi_get_puncturing);
+
+int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	struct uefi_cnv_wlan_dsbr_data *data;
+	int ret = 0;
+
+	data = iwl_uefi_get_verified_variable_guid(fwrt->trans,
+						   &IWL_EFI_WIFI_BT_GUID,
+						   IWL_UEFI_DSBR_NAME, "DSBR",
+						   sizeof(*data), NULL);
+	if (IS_ERR(data))
+		return -EINVAL;
+
+	if (data->revision != IWL_UEFI_DSBR_REVISION) {
+		ret = -EINVAL;
+		IWL_DEBUG_RADIO(fwrt, "Unsupported UEFI DSBR revision:%d\n",
+				data->revision);
+		goto out;
+	}
+	*value = data->config;
+	IWL_DEBUG_RADIO(fwrt, "Loaded DSBR config from UEFI value: 0x%x\n",
+			*value);
+out:
+	kfree(data);
+	return ret;
+}
diff --git a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
index 4e98f752b3d2..0c8943a8bd01 100644
--- a/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
+++ b/drivers/net/wireless/intel/iwlwifi/fw/uefi.h
@@ -23,6 +23,7 @@
 #define IWL_UEFI_DSM_NAME		L"UefiCnvWlanGeneralCfg"
 #define IWL_UEFI_WBEM_NAME		L"UefiCnvWlanWBEM"
 #define IWL_UEFI_PUNCTURING_NAME	L"UefiCnvWlanPuncturing"
+#define IWL_UEFI_DSBR_NAME		L"UefiCnvCommonDSBR"
 
 
 #define IWL_SGOM_MAP_SIZE		339
@@ -41,6 +42,7 @@
 #define IWL_UEFI_WBEM_REVISION		0
 #define IWL_UEFI_DSM_REVISION		4
 #define IWL_UEFI_PUNCTURING_REVISION	0
+#define IWL_UEFI_DSBR_REVISION		1
 
 struct pnvm_sku_package {
 	u8 rev;
@@ -214,6 +216,20 @@ struct uefi_cnv_var_puncturing_data {
 	u32 puncturing;
 } __packed;
 
+/**
+ * struct uefi_cnv_wlan_dsbr_data - BIOS STEP configuration information
+ * @revision: the revision of the table
+ * @config: STEP configuration flags:
+ *	bit 8, switch to URM depending on FW setting
+ *	bit 9, switch to URM
+ *
+ * Platform information for STEP configuration/workarounds.
+ */
+struct uefi_cnv_wlan_dsbr_data {
+	u8 revision;
+	u32 config;
+} __packed;
+
 /*
  * This is known to be broken on v4.19 and to work on v5.4.  Until we
  * figure out why this is the case and how to make it work, simply
@@ -245,6 +261,7 @@ void iwl_uefi_get_sgom_table(struct iwl_trans *trans, struct iwl_fw_runtime *fwr
 int iwl_uefi_get_uats_table(struct iwl_trans *trans,
 			    struct iwl_fw_runtime *fwrt);
 int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt);
+int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value);
 #else /* CONFIG_EFI */
 static inline void *iwl_uefi_get_pnvm(struct iwl_trans *trans, size_t *len)
 {
@@ -347,5 +364,11 @@ int iwl_uefi_get_puncturing(struct iwl_fw_runtime *fwrt)
 {
 	return 0;
 }
+
+static inline
+int iwl_uefi_get_dsbr(struct iwl_fw_runtime *fwrt, u32 *value)
+{
+	return -ENOENT;
+}
 #endif /* CONFIG_EFI */
 #endif /* __iwl_fw_uefi__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-context-info-gen3.h b/drivers/net/wireless/intel/iwlwifi/iwl-context-info-gen3.h
index 5b62933134cf..6b246ec3ff03 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-context-info-gen3.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-context-info-gen3.h
@@ -76,6 +76,16 @@ enum iwl_prph_scratch_flags {
 	IWL_PRPH_SCRATCH_SCU_FORCE_ACTIVE	= BIT(29),
 };
 
+/**
+ * enum iwl_prph_scratch_ext_flags - PRPH scratch control ext flags
+ * @IWL_PRPH_SCRATCH_EXT_URM_FW: switch to URM mode based on fw setting
+ * @IWL_PRPH_SCRATCH_EXT_URM_PERM: switch to permanent URM mode
+ */
+enum iwl_prph_scratch_ext_flags {
+	IWL_PRPH_SCRATCH_EXT_URM_FW	= BIT(4),
+	IWL_PRPH_SCRATCH_EXT_URM_PERM	= BIT(5),
+};
+
 /*
  * struct iwl_prph_scratch_version - version structure
  * @mac_id: SKU and revision id
@@ -93,11 +103,12 @@ struct iwl_prph_scratch_version {
 /*
  * struct iwl_prph_scratch_control - control structure
  * @control_flags: context information flags see &enum iwl_prph_scratch_flags
- * @reserved: reserved
+ * @control_flags_ext: context information for extended flags,
+ *	see &enum iwl_prph_scratch_ext_flags
  */
 struct iwl_prph_scratch_control {
 	__le32 control_flags;
-	__le32 reserved;
+	__le32 control_flags_ext;
 } __packed; /* PERIPH_SCRATCH_CONTROL_S */
 
 /*
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
index 56b551fd2156..22c0864b5704 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h
@@ -878,6 +878,8 @@ struct iwl_txq {
  * @no_160: device not supporting 160 MHz
  * @step_urm: STEP is in URM, no support for MCS>9 in 320 MHz
  * @trans_specific: data for the specific transport this is allocated for/with
+ * @dsbr_urm_fw_dependent: switch to URM based on fw settings
+ * @dsbr_urm_permanent: switch to URM permanently
  */
 struct iwl_trans {
 	bool csme_own;
@@ -902,6 +904,9 @@ struct iwl_trans {
 	bool reduced_cap_sku;
 	u8 no_160:1, step_urm:1;
 
+	u8 dsbr_urm_fw_dependent:1,
+	   dsbr_urm_permanent:1;
+
 	u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size;
 
 	bool pm_support;
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
index e21199313278..06b05e076cd2 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c
@@ -1331,6 +1331,7 @@ iwl_op_mode_mvm_start(struct iwl_trans *trans, const struct iwl_cfg *cfg,
 	iwl_mvm_get_bios_tables(mvm);
 	iwl_uefi_get_sgom_table(trans, &mvm->fwrt);
 	iwl_uefi_get_step_table(trans);
+	iwl_bios_setup_step(trans, &mvm->fwrt);
 
 	mvm->init_status = 0;
 
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
index ae93a72542b2..838c426db7f0 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/ctxt-info-gen3.c
@@ -106,6 +106,7 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 	struct iwl_prph_scratch_ctrl_cfg *prph_sc_ctrl;
 	struct iwl_prph_info *prph_info;
 	u32 control_flags = 0;
+	u32 control_flags_ext = 0;
 	int ret;
 	int cmdq_size = max_t(u32, IWL_CMD_QUEUE_SIZE,
 			      trans->cfg->min_txq_size);
@@ -130,6 +131,12 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 		break;
 	}
 
+	if (trans->dsbr_urm_fw_dependent)
+		control_flags_ext |= IWL_PRPH_SCRATCH_EXT_URM_FW;
+
+	if (trans->dsbr_urm_permanent)
+		control_flags_ext |= IWL_PRPH_SCRATCH_EXT_URM_PERM;
+
 	/* Allocate prph scratch */
 	prph_scratch = dma_alloc_coherent(trans->dev, sizeof(*prph_scratch),
 					  &trans_pcie->prph_scratch_dma_addr,
@@ -165,6 +172,7 @@ int iwl_pcie_ctxt_info_gen3_init(struct iwl_trans *trans,
 	iwl_pcie_ctxt_info_dbg_enable(trans, &prph_sc_ctrl->hwm_cfg,
 				      &control_flags);
 	prph_sc_ctrl->control.control_flags = cpu_to_le32(control_flags);
+	prph_sc_ctrl->control.control_flags_ext = cpu_to_le32(control_flags_ext);
 
 	/* initialize the Step equalizer data */
 	prph_sc_ctrl->step_cfg.mbx_addr_0 = cpu_to_le32(trans->mbx_addr_0_step);