net: mdio: mscc-miim: replace magic numbers for the bus reset

Replace the magic numbers by macros which are already defined. It seems
the original commit missed to use them.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/mdio/mdio-mscc-miim.c

@@ -158,18 +158,18 @@ static int mscc_miim_reset(struct mii_bus *bus)
 {
 	struct mscc_miim_dev *miim = bus->priv;
 	int offset = miim->phy_reset_offset;
+	int reset_bits = PHY_CFG_PHY_ENA | PHY_CFG_PHY_COMMON_RESET |
+			 PHY_CFG_PHY_RESET;
 	int ret;
 
 	if (miim->phy_regs) {
-		ret = regmap_write(miim->phy_regs,
-				   MSCC_PHY_REG_PHY_CFG + offset, 0);
+		ret = regmap_write(miim->phy_regs, offset, 0);
 		if (ret < 0) {
 			WARN_ONCE(1, "mscc reset set error %d\n", ret);
 			return ret;
 		}
 
-		ret = regmap_write(miim->phy_regs,
-				   MSCC_PHY_REG_PHY_CFG + offset, 0x1ff);
+		ret = regmap_write(miim->phy_regs, offset, reset_bits);
 		if (ret < 0) {
 			WARN_ONCE(1, "mscc reset clear error %d\n", ret);
 			return ret;
@@ -272,7 +272,7 @@ static int mscc_miim_probe(struct platform_device *pdev)
 
 	miim = bus->priv;
 	miim->phy_regs = phy_regmap;
-	miim->phy_reset_offset = 0;
+	miim->phy_reset_offset = MSCC_PHY_REG_PHY_CFG;
 
 	ret = of_mdiobus_register(bus, pdev->dev.of_node);
 	if (ret < 0) {