diff mbox series

[net-next,5/5] net: stmmac: Limit max speeds of XGMAC if asked to

Message ID 151c0529f0c698e94b81bee44d4f1d0a3379cab2.1567755423.git.joabreu@synopsys.com (mailing list archive)
State Mainlined
Commit d9da2c87176a70b8edf39e8998deb4082c1b9e1c
Headers show
Series net: stmmac: Improvements and fixes for -next | expand

Commit Message

Jose Abreu Sept. 6, 2019, 7:41 a.m. UTC 
We may have some SoCs that can't achieve XGMAC max speed. Limit it if
asked to.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 25 +++++++++++++++--------
 1 file changed, 16 insertions(+), 9 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index c3baca9f587b..686b82068142 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -831,15 +831,22 @@  static void stmmac_validate(struct phylink_config *config,
 		phylink_set(mask, 1000baseT_Full);
 		phylink_set(mask, 1000baseX_Full);
 	} else if (priv->plat->has_xgmac) {
-		phylink_set(mac_supported, 2500baseT_Full);
-		phylink_set(mac_supported, 5000baseT_Full);
-		phylink_set(mac_supported, 10000baseSR_Full);
-		phylink_set(mac_supported, 10000baseLR_Full);
-		phylink_set(mac_supported, 10000baseER_Full);
-		phylink_set(mac_supported, 10000baseLRM_Full);
-		phylink_set(mac_supported, 10000baseT_Full);
-		phylink_set(mac_supported, 10000baseKX4_Full);
-		phylink_set(mac_supported, 10000baseKR_Full);
+		if (!max_speed || (max_speed >= 2500)) {
+			phylink_set(mac_supported, 2500baseT_Full);
+			phylink_set(mac_supported, 2500baseX_Full);
+		}
+		if (!max_speed || (max_speed >= 5000)) {
+			phylink_set(mac_supported, 5000baseT_Full);
+		}
+		if (!max_speed || (max_speed >= 10000)) {
+			phylink_set(mac_supported, 10000baseSR_Full);
+			phylink_set(mac_supported, 10000baseLR_Full);
+			phylink_set(mac_supported, 10000baseER_Full);
+			phylink_set(mac_supported, 10000baseLRM_Full);
+			phylink_set(mac_supported, 10000baseT_Full);
+			phylink_set(mac_supported, 10000baseKX4_Full);
+			phylink_set(mac_supported, 10000baseKR_Full);
+		}
 	}
 
 	/* Half-Duplex can only work with single queue */