diff --git a/src/mainboard/amd/crater/ec.c b/src/mainboard/amd/crater/ec.c
index 533e32de25..b74f72fb1e 100644
--- a/src/mainboard/amd/crater/ec.c
+++ b/src/mainboard/amd/crater/ec.c
@@ -105,7 +105,6 @@
 #define   ECG_WLAN_WWAN_MUX_OFF	BIT(4)
 
 #define ECRAM_BOARDID_OFFSET 0x93
-#define CRATER_REVB    0x42
 #define ECRAM_MACID_OFFSET 0x54
 #define MACID_LEN 12
 
@@ -214,6 +213,19 @@ void crater_ec_init(void)
 	configure_ec_gpio();
 }
 
+uint8_t crater_ec_get_board_revision(void)
+{
+	static uint8_t board_rev;
+
+	if (board_rev)
+		return board_rev;
+
+	ec_set_ports(CRATER_EC_CMD, CRATER_EC_DATA);
+	board_rev = ec_read(ECRAM_BOARDID_OFFSET + 0x3);
+
+	return board_rev;
+}
+
 void crater_ec_get_mac_addresses(uint64_t *xgbe_port0_mac, uint64_t *xgbe_port1_mac)
 {
 	uint64_t port0_mac = 0;
diff --git a/src/mainboard/amd/crater/ec.h b/src/mainboard/amd/crater/ec.h
index f9e90a5244..e47b7d9f2d 100644
--- a/src/mainboard/amd/crater/ec.h
+++ b/src/mainboard/amd/crater/ec.h
@@ -3,8 +3,11 @@
 #ifndef CRATER_EC_H
 #define CRATER_EC_H
 
+#define CRATER_REVB  0x42
+
 void crater_ec_init(void);
 void crater_boardrevision(void);
+uint8_t crater_ec_get_board_revision(void);
 void crater_ec_get_mac_addresses(uint64_t *xgbe_port0_mac, uint64_t *xgbe_port1_mac);
 
 #endif /* CRATER_EC_H */
diff --git a/src/mainboard/amd/crater/port_descriptors_renoir.c b/src/mainboard/amd/crater/port_descriptors_renoir.c
index f24eb874a0..5ac965f84a 100644
--- a/src/mainboard/amd/crater/port_descriptors_renoir.c
+++ b/src/mainboard/amd/crater/port_descriptors_renoir.c
@@ -18,8 +18,6 @@
 #define CRATER_EC_CMD   0x666
 #define CRATER_EC_DATA  0x662
 
-#define CRATER_REVB 0x42
-
 #define mxm_dxio_descriptor { \
 	.engine_type = PCIE_ENGINE, \
 	.port_present = true, \
@@ -164,18 +162,15 @@ void mainboard_get_dxio_ddi_descriptors(
 		const fsp_dxio_descriptor **dxio_descs, size_t *dxio_num,
 		const fsp_ddi_descriptor **ddi_descs, size_t *ddi_num)
 {
-	uint8_t BoardRev;
+	uint8_t board_rev = crater_ec_get_board_revision();
 
 	if ((get_cpu_count() == 4 && get_threads_per_core() == 2) || get_cpu_count() == 2)
 		crater_ddi_descriptors[1].connector_type = DDI_UNUSED_TYPE;
 
-	ec_set_ports(CRATER_EC_CMD, CRATER_EC_DATA);
-	BoardRev = ec_read(ECRAM_BOARDID_OFFSET + 0x3);
-
 	if (CONFIG(ENABLE_EDP)) {
 		crater_ddi_descriptors[1].connector_type = DDI_EDP;
 	} else {
-		if (BoardRev == CRATER_REVB)
+		if (board_rev == CRATER_REVB)
 			crater_ddi_descriptors[1].connector_type = DDI_DP;
 		else
 			crater_ddi_descriptors[1].connector_type = DDI_HDMI;