net: phy: Allow EEE for all RGMII variants

RGMII interfaces come in multiple flavors: RGMII with transmit or
receive internal delay, no delays at all, or delays in both direction.

This change extends the initial check for PHY_INTERFACE_MODE_RGMII to
cover all of these variants since EEE should be allowed for any of these
modes, since it is a property of the RGMII, hence Gigabit PHY capability
more than the RGMII electrical interface and its delays.

Fixes: a59a4d192166 ("phy: add the EEE support and the way to access to the MMD registers")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c
index 52cd8db..757f28a 100644 (file)
--- a/drivers/net/phy/phy.c
+++ b/drivers/net/phy/phy.c
@@ -1053,13 +1053,14 @@ 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. Internal PHYs are also allowed to proceed and should
-        * return an error if they do not support EEE.
+        * or RGMII (all kinds). 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 &&
+            phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID) ||
             phy_is_internal(phydev))) {
                int eee_lp, eee_cap, eee_adv;
                u32 lp, cap, adv;