diff --git a/drivers/net/ipq806x/ipq_gmac_eth.c b/drivers/net/ipq806x/ipq_gmac_eth.c
index 58b736cfd5..ade6092b5b 100644
--- a/drivers/net/ipq806x/ipq_gmac_eth.c
+++ b/drivers/net/ipq806x/ipq_gmac_eth.c
@@ -867,8 +867,9 @@ int ipq_gmac_init(ipq_gmac_board_cfg_t *gmac_cfg)
 			strncpy(bb_miiphy_buses[i].name, gmac_cfg->phy_name,
 						sizeof(bb_miiphy_buses[i].name));
 			miiphy_register(bb_miiphy_buses[i].name, bb_miiphy_read, bb_miiphy_write);
-			miiphy_write(bb_miiphy_buses[i].name, ipq_gmac_macs[i]->phy_address,
-					PHY_CONTROL_REG, BMCR_RESET | AUTO_NEG_ENABLE);
+			miiphy_write(bb_miiphy_buses[i].name,
+				     (uintptr_t)ipq_gmac_macs[i]->phy_address, PHY_CONTROL_REG,
+				     BMCR_RESET | AUTO_NEG_ENABLE);
 		}
 
 		eth_register(dev[i]);