diff --git a/drivers/net/bnxt/bnxt_ethdev.c b/drivers/net/bnxt/bnxt_ethdev.c
index 8181e1f37a..4e4791c2db 100644
--- a/drivers/net/bnxt/bnxt_ethdev.c
+++ b/drivers/net/bnxt/bnxt_ethdev.c
@@ -903,6 +903,7 @@ static int bnxt_shutdown_nic(struct bnxt *bp)
 
 uint32_t bnxt_get_speed_capabilities(struct bnxt *bp)
 {
+	uint32_t pam4_link_speed = 0;
 	uint32_t link_speed = 0;
 	uint32_t speed_capa = 0;
 
@@ -912,8 +913,8 @@ uint32_t bnxt_get_speed_capabilities(struct bnxt *bp)
 	link_speed = bp->link_info->support_speeds;
 
 	/* If PAM4 is configured, use PAM4 supported speed */
-	if (link_speed == 0 && bp->link_info->support_pam4_speeds > 0)
-		link_speed = bp->link_info->support_pam4_speeds;
+	if (bp->link_info->support_pam4_speeds > 0)
+		pam4_link_speed = bp->link_info->support_pam4_speeds;
 
 	if (link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_LINK_SPEED_100MB)
 		speed_capa |= RTE_ETH_LINK_SPEED_100M;
@@ -935,11 +936,11 @@ uint32_t bnxt_get_speed_capabilities(struct bnxt *bp)
 		speed_capa |= RTE_ETH_LINK_SPEED_50G;
 	if (link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_SPEEDS_100GB)
 		speed_capa |= RTE_ETH_LINK_SPEED_100G;
-	if (link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_50G)
+	if (pam4_link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_50G)
 		speed_capa |= RTE_ETH_LINK_SPEED_50G;
-	if (link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_100G)
+	if (pam4_link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_100G)
 		speed_capa |= RTE_ETH_LINK_SPEED_100G;
-	if (link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_200G)
+	if (pam4_link_speed & HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_200G)
 		speed_capa |= RTE_ETH_LINK_SPEED_200G;
 
 	if (bp->link_info->auto_mode ==
diff --git a/drivers/net/bnxt/bnxt_hwrm.c b/drivers/net/bnxt/bnxt_hwrm.c
index 9eb8b8d56d..206ac20c0c 100644
--- a/drivers/net/bnxt/bnxt_hwrm.c
+++ b/drivers/net/bnxt/bnxt_hwrm.c
@@ -2970,7 +2970,7 @@ static uint16_t bnxt_check_eth_link_autoneg(uint32_t conf_link)
 }
 
 static uint16_t bnxt_parse_eth_link_speed(uint32_t conf_link_speed,
-					  uint16_t pam4_link)
+					  struct bnxt_link_info *link_info)
 {
 	uint16_t eth_link_speed = 0;
 
@@ -3009,18 +3009,29 @@ static uint16_t bnxt_parse_eth_link_speed(uint32_t conf_link_speed,
 			HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_40GB;
 		break;
 	case RTE_ETH_LINK_SPEED_50G:
-		eth_link_speed = pam4_link ?
-			HWRM_PORT_PHY_CFG_INPUT_FORCE_PAM4_LINK_SPEED_50GB :
-			HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_50GB;
+		if (link_info->support_pam4_speeds &
+		    HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_50G) {
+			eth_link_speed = HWRM_PORT_PHY_CFG_INPUT_FORCE_PAM4_LINK_SPEED_50GB;
+			link_info->link_signal_mode = BNXT_SIG_MODE_PAM4;
+		} else {
+			eth_link_speed = HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_50GB;
+			link_info->link_signal_mode = BNXT_SIG_MODE_NRZ;
+		}
 		break;
 	case RTE_ETH_LINK_SPEED_100G:
-		eth_link_speed = pam4_link ?
-			HWRM_PORT_PHY_CFG_INPUT_FORCE_PAM4_LINK_SPEED_100GB :
-			HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_100GB;
+		if (link_info->support_pam4_speeds &
+		    HWRM_PORT_PHY_QCFG_OUTPUT_SUPPORT_PAM4_SPEEDS_100G) {
+			eth_link_speed = HWRM_PORT_PHY_CFG_INPUT_FORCE_PAM4_LINK_SPEED_100GB;
+			link_info->link_signal_mode = BNXT_SIG_MODE_PAM4;
+		} else {
+			eth_link_speed = HWRM_PORT_PHY_CFG_INPUT_FORCE_LINK_SPEED_100GB;
+			link_info->link_signal_mode = BNXT_SIG_MODE_NRZ;
+		}
 		break;
 	case RTE_ETH_LINK_SPEED_200G:
 		eth_link_speed =
 			HWRM_PORT_PHY_CFG_INPUT_FORCE_PAM4_LINK_SPEED_200GB;
+		link_info->link_signal_mode = BNXT_SIG_MODE_PAM4;
 		break;
 	default:
 		PMD_DRV_LOG(ERR,
@@ -3242,7 +3253,7 @@ int bnxt_set_hwrm_link_config(struct bnxt *bp, bool link_up)
 		autoneg = 0;
 
 	speed = bnxt_parse_eth_link_speed(dev_conf->link_speeds,
-					  bp->link_info->link_signal_mode);
+					  bp->link_info);
 	link_req.phy_flags = HWRM_PORT_PHY_CFG_INPUT_FLAGS_RESET_PHY;
 	/* Autoneg can be done only when the FW allows. */
 	if (autoneg == 1 &&
diff --git a/drivers/net/bnxt/bnxt_hwrm.h b/drivers/net/bnxt/bnxt_hwrm.h
index 77f8521406..a82d9fb3ef 100644
--- a/drivers/net/bnxt/bnxt_hwrm.h
+++ b/drivers/net/bnxt/bnxt_hwrm.h
@@ -141,6 +141,9 @@ struct bnxt_pf_resource_info {
 	 BNXT_TUNNELED_OFFLOADS_CAP_GRE_EN(bp)   &&		\
 	 BNXT_TUNNELED_OFFLOADS_CAP_IPINIP_EN(bp))
 
+#define BNXT_SIG_MODE_NRZ	HWRM_PORT_PHY_QCFG_OUTPUT_SIGNAL_MODE_NRZ
+#define BNXT_SIG_MODE_PAM4	HWRM_PORT_PHY_QCFG_OUTPUT_SIGNAL_MODE_PAM4
+
 int bnxt_hwrm_cfa_l2_clear_rx_mask(struct bnxt *bp,
 				   struct bnxt_vnic_info *vnic);
 int bnxt_hwrm_cfa_l2_set_rx_mask(struct bnxt *bp, struct bnxt_vnic_info *vnic,