net: ethernet: ti: am65-cpsw: fix rmii 100Mbit link mode

In RMII link mode it's required to set bit 15 IFCTL_A in MAC_SL MAC_CONTROL register to enable support for 100Mbit link speed. Fixes: 93a7653 ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver") Signed-off-by: Grygorii Strashko <[email protected]> Signed-off-by: David S. Miller <[email protected]>
josf · Aug 31, 2020 · c2f8921 · c2f8921
1 parent 6b6382a
commit c2f8921
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/ethernet/ti/am65-cpsw-nuss.c b/drivers/net/ethernet/ti/am65-cpsw-nuss.c
@@ -174,6 +174,8 @@ void am65_cpsw_nuss_adjust_link(struct net_device *ndev)
 		if (phy->speed == 10 && phy_interface_is_rgmii(phy))
 			/* Can be used with in band mode only */
 			mac_control |= CPSW_SL_CTL_EXT_EN;
+		if (phy->speed == 100 && phy->interface == PHY_INTERFACE_MODE_RMII)
+			mac_control |= CPSW_SL_CTL_IFCTL_A;
 		if (phy->duplex)
 			mac_control |= CPSW_SL_CTL_FULLDUPLEX;