diff --git a/drivers/net/mlx5/linux/mlx5_os.c b/drivers/net/mlx5/linux/mlx5_os.c
index 96d32d11d8..ed273e14cf 100644
--- a/drivers/net/mlx5/linux/mlx5_os.c
+++ b/drivers/net/mlx5/linux/mlx5_os.c
@@ -1328,14 +1328,14 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 				 * Prefer REG_C_3 if it is available.
 				 */
 				if (reg_c_mask & (1 << (REG_C_3 - REG_C_0)))
-					sh->registers.mtr_color_reg = REG_C_3;
+					sh->registers.aso_reg = REG_C_3;
 				else
-					sh->registers.mtr_color_reg =
+					sh->registers.aso_reg =
 						ffs(reg_c_mask) - 1 + REG_C_0;
 				priv->mtr_en = 1;
 				priv->mtr_reg_share = hca_attr->qos.flow_meter;
 				DRV_LOG(DEBUG, "The REG_C meter uses is %d",
-					sh->registers.mtr_color_reg);
+					sh->registers.aso_reg);
 			}
 		}
 		if (hca_attr->qos.sup && hca_attr->qos.flow_meter_aso_sup) {
@@ -1360,7 +1360,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
 			sh->tunnel_header_2_3 = 1;
 #endif
 #ifdef HAVE_MLX5_DR_CREATE_ACTION_ASO
-		if (hca_attr->flow_hit_aso && sh->registers.mtr_color_reg == REG_C_3) {
+		if (hca_attr->flow_hit_aso && sh->registers.aso_reg == REG_C_3) {
 			sh->flow_hit_aso_en = 1;
 			err = mlx5_flow_aso_age_mng_init(sh);
 			if (err) {
@@ -1374,7 +1374,7 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev,
     defined (HAVE_MLX5_DR_ACTION_ASO_CT)
 		/* HWS create CT ASO SQ based on HWS configure queue number. */
 		if (sh->config.dv_flow_en != 2 &&
-		    hca_attr->ct_offload && sh->registers.mtr_color_reg == REG_C_3) {
+		    hca_attr->ct_offload && sh->registers.aso_reg == REG_C_3) {
 			err = mlx5_flow_aso_ct_mng_init(sh);
 			if (err) {
 				err = -err;
diff --git a/drivers/net/mlx5/mlx5.h b/drivers/net/mlx5/mlx5.h
index 01cb21fc93..99a2ad88ed 100644
--- a/drivers/net/mlx5/mlx5.h
+++ b/drivers/net/mlx5/mlx5.h
@@ -1376,8 +1376,7 @@ struct mlx5_hws_cnt_svc_mng {
 #define MLX5_FLOW_HW_TAGS_MAX 8
 
 struct mlx5_dev_registers {
-	enum modify_reg mlx5_flow_hw_aso_tag;
-	enum modify_reg mtr_color_reg; /* Meter color match REG_C. */
+	enum modify_reg aso_reg;
 	enum modify_reg hw_avl_tags[MLX5_FLOW_HW_TAGS_MAX];
 };
 
diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 3ddc3ba772..ad9a2f2273 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1364,23 +1364,23 @@ mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 		 * should use the meter color register for match.
 		 */
 		if (priv->mtr_reg_share)
-			return reg->mtr_color_reg;
+			return reg->aso_reg;
 		else
-			return reg->mtr_color_reg != REG_C_2 ? REG_C_2 :
+			return reg->aso_reg != REG_C_2 ? REG_C_2 :
 			       REG_C_3;
 	case MLX5_MTR_COLOR:
 	case MLX5_ASO_FLOW_HIT:
 	case MLX5_ASO_CONNTRACK:
 	case MLX5_SAMPLE_ID:
 		/* All features use the same REG_C. */
-		MLX5_ASSERT(reg->mtr_color_reg != REG_NON);
-		return reg->mtr_color_reg;
+		MLX5_ASSERT(reg->aso_reg != REG_NON);
+		return reg->aso_reg;
 	case MLX5_COPY_MARK:
 		/*
 		 * Metadata COPY_MARK register using is in meter suffix sub
 		 * flow while with meter. It's safe to share the same register.
 		 */
-		return reg->mtr_color_reg != REG_C_2 ? REG_C_2 : REG_C_3;
+		return reg->aso_reg != REG_C_2 ? REG_C_2 : REG_C_3;
 	case MLX5_APP_TAG:
 		/*
 		 * If meter is enable, it will engage the register for color
@@ -1389,7 +1389,7 @@ mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 		 * match.
 		 * If meter is disable, free to use all available registers.
 		 */
-		start_reg = reg->mtr_color_reg != REG_C_2 ? REG_C_2 :
+		start_reg = reg->aso_reg != REG_C_2 ? REG_C_2 :
 			    (priv->mtr_reg_share ? REG_C_3 : REG_C_4);
 		skip_mtr_reg = !!(priv->mtr_en && start_reg == REG_C_2);
 		if (id > (uint32_t)(REG_C_7 - start_reg))
@@ -1407,7 +1407,7 @@ mlx5_flow_get_reg_id(struct rte_eth_dev *dev,
 		 * color register.
 		 */
 		if (skip_mtr_reg && priv->sh->flow_mreg_c
-		    [id + start_reg - REG_C_0] >= reg->mtr_color_reg) {
+		    [id + start_reg - REG_C_0] >= reg->aso_reg) {
 			if (id >= (uint32_t)(REG_C_7 - start_reg))
 				return rte_flow_error_set(error, EINVAL,
 						       RTE_FLOW_ERROR_TYPE_ITEM,
@@ -6480,7 +6480,7 @@ flow_sample_split_prep(struct rte_eth_dev *dev,
 		 * metadata regC is REG_NON, back to use application tag
 		 * index 0.
 		 */
-		if (unlikely(priv->sh->registers.mtr_color_reg == REG_NON))
+		if (unlikely(priv->sh->registers.aso_reg == REG_NON))
 			ret = mlx5_flow_get_reg_id(dev, MLX5_APP_TAG, 0, error);
 		else
 			ret = mlx5_flow_get_reg_id(dev, MLX5_SAMPLE_ID, 0, error);
diff --git a/drivers/net/mlx5/mlx5_flow.h b/drivers/net/mlx5/mlx5_flow.h
index 011db1fb75..250d9eb1fc 100644
--- a/drivers/net/mlx5/mlx5_flow.h
+++ b/drivers/net/mlx5/mlx5_flow.h
@@ -1663,7 +1663,6 @@ flow_hw_get_wire_port(struct ibv_context *ibctx)
  * Convert metadata or tag to the actual register.
  * META: Can only be used to match in the FDB in this stage, fixed C_1.
  * TAG: C_x expect meter color reg and the reserved ones.
- * TODO: Per port / device, FDB or NIC for Meta matching.
  */
 static __rte_always_inline int
 flow_hw_get_reg_id(struct rte_eth_dev *dev,
@@ -1692,7 +1691,7 @@ flow_hw_get_reg_id(struct rte_eth_dev *dev,
 		return REG_A;
 	case RTE_FLOW_ITEM_TYPE_CONNTRACK:
 	case RTE_FLOW_ITEM_TYPE_METER_COLOR:
-		return reg->mlx5_flow_hw_aso_tag;
+		return reg->aso_reg;
 	case RTE_FLOW_ITEM_TYPE_TAG:
 		if (id == MLX5_LINEAR_HASH_TAG_INDEX)
 			return REG_C_3;
diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index 024023abb5..9268a07c84 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -2026,7 +2026,8 @@ mlx5_flow_field_id_to_modify_info
 
 			if (priv->sh->config.dv_flow_en == 2)
 				reg = flow_hw_get_reg_id
-				(dev, RTE_FLOW_ITEM_TYPE_METER_COLOR, 0);
+					(dev,
+					 RTE_FLOW_ITEM_TYPE_METER_COLOR, 0);
 			else
 				reg = mlx5_flow_get_reg_id(dev, MLX5_MTR_COLOR,
 						       0, error);
@@ -3923,7 +3924,7 @@ flow_dv_validate_item_meter_color(struct rte_eth_dev *dev,
 	};
 	int ret;
 
-	if (priv->sh->registers.mtr_color_reg == REG_NON)
+	if (priv->sh->registers.aso_reg == REG_NON)
 		return rte_flow_error_set(error, ENOTSUP,
 					  RTE_FLOW_ERROR_TYPE_ITEM, item,
 					  "meter color register"
@@ -8375,7 +8376,7 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 				return ret;
 			if ((action_flags & MLX5_FLOW_ACTION_SET_TAG) &&
 			    tag_id == 0 &&
-			    priv->sh->registers.mtr_color_reg == REG_NON)
+			    priv->sh->registers.aso_reg == REG_NON)
 				return rte_flow_error_set(error, EINVAL,
 					RTE_FLOW_ERROR_TYPE_ACTION, NULL,
 					"sample after tag action causes metadata tag index 0 corruption");
diff --git a/drivers/net/mlx5/mlx5_flow_hw.c b/drivers/net/mlx5/mlx5_flow_hw.c
index 22cf412035..c48c2eec39 100644
--- a/drivers/net/mlx5/mlx5_flow_hw.c
+++ b/drivers/net/mlx5/mlx5_flow_hw.c
@@ -8469,7 +8469,7 @@ void flow_hw_init_tags_set(struct rte_eth_dev *dev)
 	 * The CAPA is global for common device but only used in net.
 	 * It is shared per eswitch domain.
 	 */
-	unset |= 1 << mlx5_regc_index(reg->mtr_color_reg);
+	unset |= 1 << mlx5_regc_index(reg->aso_reg);
 	unset |= 1 << mlx5_regc_index(REG_C_6);
 	if (sh->config.dv_esw_en)
 		unset |= 1 << mlx5_regc_index(REG_C_0);
@@ -8480,7 +8480,6 @@ void flow_hw_init_tags_set(struct rte_eth_dev *dev)
 		if (!!((1 << i) & masks))
 			reg->hw_avl_tags[j++] = mlx5_regc_value(i);
 	}
-	reg->mlx5_flow_hw_aso_tag = reg->mtr_color_reg;
 }
 
 static int
diff --git a/drivers/net/mlx5/mlx5_flow_meter.c b/drivers/net/mlx5/mlx5_flow_meter.c
index eb88dfe39c..7cbf772ea4 100644
--- a/drivers/net/mlx5/mlx5_flow_meter.c
+++ b/drivers/net/mlx5/mlx5_flow_meter.c
@@ -67,7 +67,7 @@ mlx5_flow_meter_action_create(struct mlx5_priv *priv,
 	val = (ebs_eir >> ASO_DSEG_EBS_MAN_OFFSET) & ASO_DSEG_MAN_MASK;
 	MLX5_SET(flow_meter_parameters, fmp, ebs_mantissa, val);
 	mtr_init.next_table = def_policy->sub_policy.tbl_rsc->obj;
-	mtr_init.reg_c_index = priv->sh->registers.mtr_color_reg - REG_C_0;
+	mtr_init.reg_c_index = priv->sh->registers.aso_reg - REG_C_0;
 	mtr_init.flow_meter_parameter = fmp;
 	mtr_init.flow_meter_parameter_sz =
 		MLX5_ST_SZ_BYTES(flow_meter_parameters);
@@ -1618,7 +1618,7 @@ mlx5_flow_meter_action_modify(struct mlx5_priv *priv,
 			return ret;
 	} else {
 		/* Fill command parameters. */
-		mod_attr.reg_c_index = sh->registers.mtr_color_reg - REG_C_0;
+		mod_attr.reg_c_index = sh->registers.aso_reg - REG_C_0;
 		mod_attr.flow_meter_parameter = in;
 		mod_attr.flow_meter_parameter_sz =
 				MLX5_ST_SZ_BYTES(flow_meter_parameters);
