diff --git a/doc/guides/nics/octeontx2.rst b/doc/guides/nics/octeontx2.rst
index 5f511feb71..9a76567a81 100644
--- a/doc/guides/nics/octeontx2.rst
+++ b/doc/guides/nics/octeontx2.rst
@@ -268,6 +268,13 @@ Patterns:
    +----+--------------------------------+
    | 22 | RTE_FLOW_ITEM_TYPE_ANY         |
    +----+--------------------------------+
+   | 23 | RTE_FLOW_ITEM_TYPE_GRE_KEY     |
+   +----+--------------------------------+
+
+.. note::
+
+   ``RTE_FLOW_ITEM_TYPE_GRE_KEY`` works only when checksum and routing
+   bits in the GRE header are equal to 0.
 
 Actions:
 
diff --git a/drivers/net/octeontx2/otx2_flow_parse.c b/drivers/net/octeontx2/otx2_flow_parse.c
index 6e65db8e44..6670c1a702 100644
--- a/drivers/net/octeontx2/otx2_flow_parse.c
+++ b/drivers/net/octeontx2/otx2_flow_parse.c
@@ -389,6 +389,7 @@ int
 otx2_flow_parse_ld(struct otx2_parse_state *pst)
 {
 	char hw_mask[NPC_MAX_EXTRACT_DATA_LEN];
+	uint32_t gre_key_mask = 0xffffffff;
 	struct otx2_flow_item_info info;
 	int lid, lt, lflags;
 	int rc;
@@ -450,6 +451,12 @@ otx2_flow_parse_ld(struct otx2_parse_state *pst)
 		info.def_mask = &rte_flow_item_gre_mask;
 		info.len = sizeof(struct rte_flow_item_gre);
 		break;
+	case RTE_FLOW_ITEM_TYPE_GRE_KEY:
+		lt = NPC_LT_LD_GRE;
+		info.def_mask = &gre_key_mask;
+		info.len = sizeof(gre_key_mask);
+		info.hw_hdr_len = 4;
+		break;
 	case RTE_FLOW_ITEM_TYPE_NVGRE:
 		lt = NPC_LT_LD_GRE;
 		lflags = NPC_F_GRE_NVGRE;