Commit 37920fce authored Jun 03, 2016 by John Crispin Committed by David S. Miller Jun 03, 2016

net-next: mediatek: properly handle RGMII modes



If an external Gigabit PHY is connected to either of the MACs we need to
be able to tell the PHY to use a delay. Not doing so will result in heavy
packet loss and/or data corruption when using PHYs such as the IC+ IP1001.
We tell the PHY which MII delay mode to use via the devictree.

The ethernet driver needs to be adapted to handle all 3 rgmii-*id modes
in the same way as normal rgmii when setting up the MAC.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 0c72c50f

drivers/net/ethernet/mediatek/mtk_eth_soc.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -236,6 +236,9 @@ static int mtk_phy_connect(struct mtk_mac *mac)
		return -ENODEV;

		switch (of_get_phy_mode(np)) {
		case PHY_INTERFACE_MODE_RGMII_TXID:
		case PHY_INTERFACE_MODE_RGMII_RXID:
		case PHY_INTERFACE_MODE_RGMII_ID:
		case PHY_INTERFACE_MODE_RGMII:
		ge_mode = 0;
		break;