net: phy: allow phy_init_eee() to work with internal PHYs

Internal PHYs do not have any specific phy_interface_t defined because
they are within an Ethernet MAC or a larger IC, they will fail the early
check in phy_init_eee(). Allow these PHYs to proceed with EEE
initialization and report error/success by checking the standard C45
EEE-related registers.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index e7a5893f32ff..932190e04d08 100644
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1019,12 +1019,14 @@ int phy_init_eee(struct phy_device *phydev, bool clk_stop_enable)
 {
         /* According to 802.3az,the EEE is supported only in full duplex-mode.
          * Also EEE feature is active when core is operating with MII, GMII
-         * or RGMII.
+         * or RGMII. Internal PHYs are also allowed to proceed and should
+         * return an error if they do not support EEE.
          */
         if ((phydev->duplex == DUPLEX_FULL) &&
             ((phydev->interface == PHY_INTERFACE_MODE_MII) ||
             (phydev->interface == PHY_INTERFACE_MODE_GMII) ||
-            (phydev->interface == PHY_INTERFACE_MODE_RGMII))) {
+            (phydev->interface == PHY_INTERFACE_MODE_RGMII) ||
+             phy_is_internal(phydev))) {
                 int eee_lp, eee_cap, eee_adv;
                 u32 lp, cap, adv;
                 int status;