net: phy: bcm7xxx: define soft_reset for 40nm EPHY

BugLink: https://bugs.launchpad.net/bugs/1852111
[ Upstream commit fe586b823372a9f43f90e2c6aa0573992ce7ccb7 ]

The internal 40nm EPHYs use a "Workaround for putting the PHY in
IDDQ mode." These PHYs require a soft reset to restore functionality
after they are powered back up.

This commit defines the soft_reset function to use genphy_soft_reset
during phy_init_hw to accommodate this.

Fixes: 6e2d85ec0559 ("net: phy: Stop with excessive soft reset")
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Connor Kuehl <connor.kuehl@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>

diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c
index 8fc33867e524f865261b68f8c2f74ab0d8c6d660..af8eabe7a6d4438876877b634f6a51f47449f691 100644 (file)
--- a/drivers/net/phy/bcm7xxx.c
+++ b/drivers/net/phy/bcm7xxx.c
@@ -572,6 +572,7 @@ static int bcm7xxx_28nm_probe(struct phy_device *phydev)
        .name           = _name,                                        \
        /* PHY_BASIC_FEATURES */                                        \
        .flags          = PHY_IS_INTERNAL,                              \
+       .soft_reset     = genphy_soft_reset,                            \
        .config_init    = bcm7xxx_config_init,                          \
        .suspend        = bcm7xxx_suspend,                              \
        .resume         = bcm7xxx_config_init,                          \