[PATCH net-next 2/3] net: dpaa2-mac: add 1000BASE-X support

[Russell King]

Now that pcs-lynx supports 1000BASE-X, add support for this interface
mode to dpaa2-mac. pcs-lynx can be switched at runtime between SGMII
and 1000BASE-X mode, so allow dpaa2-mac to switch between these as
well.

This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.

Signed-off-by: Russell King <rmk+ker...@armlinux.org.uk>
---
 .../net/ethernet/freescale/dpaa2/dpaa2-mac.c  | 20 ++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c 
b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
index 69ad869446cf..3ddfb40eb5e4 100644
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -79,10 +79,20 @@ static bool dpaa2_mac_phy_mode_mismatch(struct dpaa2_mac 
*mac,
                                        phy_interface_t interface)
 {
        switch (interface) {
+       /* We can switch between SGMII and 1000BASE-X at runtime with
+        * pcs-lynx
+        */
+       case PHY_INTERFACE_MODE_SGMII:
+       case PHY_INTERFACE_MODE_1000BASEX:
+               if (mac->pcs &&
+                   (mac->if_mode == PHY_INTERFACE_MODE_SGMII ||
+                    mac->if_mode == PHY_INTERFACE_MODE_1000BASEX))
+                       return false;
+               return interface != mac->if_mode;
+
        case PHY_INTERFACE_MODE_10GBASER:
        case PHY_INTERFACE_MODE_USXGMII:
        case PHY_INTERFACE_MODE_QSGMII:
-       case PHY_INTERFACE_MODE_SGMII:
        case PHY_INTERFACE_MODE_RGMII:
        case PHY_INTERFACE_MODE_RGMII_ID:
        case PHY_INTERFACE_MODE_RGMII_RXID:
@@ -122,13 +132,17 @@ static void dpaa2_mac_validate(struct phylink_config 
*config,
                fallthrough;
        case PHY_INTERFACE_MODE_SGMII:
        case PHY_INTERFACE_MODE_QSGMII:
+       case PHY_INTERFACE_MODE_1000BASEX:
        case PHY_INTERFACE_MODE_RGMII:
        case PHY_INTERFACE_MODE_RGMII_ID:
        case PHY_INTERFACE_MODE_RGMII_RXID:
        case PHY_INTERFACE_MODE_RGMII_TXID:
-               phylink_set(mask, 10baseT_Full);
-               phylink_set(mask, 100baseT_Full);
+               phylink_set(mask, 1000baseX_Full);
                phylink_set(mask, 1000baseT_Full);
+               if (state->interface == PHY_INTERFACE_MODE_1000BASEX)
+                       break;
+               phylink_set(mask, 100baseT_Full);
+               phylink_set(mask, 10baseT_Full);
                break;
        default:
                goto empty_set;
-- 
2.20.1