net: gemini: allow any RGMII interface mode

The four RGMII interface modes take care of the required RGMII delay
configuration at the PHY and should not be limited by the network MAC
driver. Sadly, gemini was only permitting RGMII mode with no delays,
which would require the required delay to be inserted via PCB tracking
or by the MAC.

However, there are designs that require the PHY to add the delay, which
is impossible without Gemini permitting the other three PHY interface
modes. Fix the driver to allow these.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Link: https://lore.kernel.org/r/E1n4mpT-002PLd-Ha@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/ethernet/cortina/gemini.c b/drivers/net/ethernet/cortina/gemini.c
index 07add311f65df5aa31b2bd8cd46be3c3105a45dc..c78b99a497df47db49e4f0ed96c255cf06eb604d 100644 (file)
--- a/drivers/net/ethernet/cortina/gemini.c
+++ b/drivers/net/ethernet/cortina/gemini.c
@@ -305,21 +305,21 @@ static void gmac_speed_set(struct net_device *netdev)
        switch (phydev->speed) {
        case 1000:
                status.bits.speed = GMAC_SPEED_1000;
-               if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
+               if (phy_interface_mode_is_rgmii(phydev->interface))
                        status.bits.mii_rmii = GMAC_PHY_RGMII_1000;
                netdev_dbg(netdev, "connect %s to RGMII @ 1Gbit\n",
                           phydev_name(phydev));
                break;
        case 100:
                status.bits.speed = GMAC_SPEED_100;
-               if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
+               if (phy_interface_mode_is_rgmii(phydev->interface))
                        status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;
                netdev_dbg(netdev, "connect %s to RGMII @ 100 Mbit\n",
                           phydev_name(phydev));
                break;
        case 10:
                status.bits.speed = GMAC_SPEED_10;
-               if (phydev->interface == PHY_INTERFACE_MODE_RGMII)
+               if (phy_interface_mode_is_rgmii(phydev->interface))
                        status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;
                netdev_dbg(netdev, "connect %s to RGMII @ 10 Mbit\n",
                           phydev_name(phydev));
@@ -389,6 +389,9 @@ static int gmac_setup_phy(struct net_device *netdev)
                status.bits.mii_rmii = GMAC_PHY_GMII;
                break;
        case PHY_INTERFACE_MODE_RGMII:
+       case PHY_INTERFACE_MODE_RGMII_ID:
+       case PHY_INTERFACE_MODE_RGMII_TXID:
+       case PHY_INTERFACE_MODE_RGMII_RXID:
                netdev_dbg(netdev,
                           "RGMII: set GMAC0 and GMAC1 to MII/RGMII mode\n");
                status.bits.mii_rmii = GMAC_PHY_RGMII_100_10;