net: phy: mxl-86110: Add power management and soft reset support

Implement soft_reset, suspend, and resume callbacks using
genphy_soft_reset(), genphy_suspend(), and genphy_resume()
to fix PHY initialization and power management issues.

The soft_reset callback is needed to properly recover the PHY after an
ifconfig down/up cycle. Without it, the PHY can remain in power-down
state, causing MDIO register access failures during config_init().
The soft reset ensures the PHY is operational before configuration.

The suspend/resume callbacks enable proper power management during
system suspend/resume cycles.

Fixes: b2908a989c59 ("net: phy: add driver for MaxLinear MxL86110 PHY")
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
Link: https://patch.msgid.link/20251223120940.407195-1-stefano.r@variscite.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/phy/mxl-86110.c b/drivers/net/phy/mxl-86110.c
index e5d137a37a1d44553b42a67f6c57c2e09da28b1b..42a5fe3f115f42f0405363e2cc62261ffdbf8d36 100644 (file)
--- a/drivers/net/phy/mxl-86110.c
+++ b/drivers/net/phy/mxl-86110.c
@@ -938,6 +938,9 @@ static struct phy_driver mxl_phy_drvs[] = {
                PHY_ID_MATCH_EXACT(PHY_ID_MXL86110),
                .name                   = "MXL86110 Gigabit Ethernet",
                .config_init            = mxl86110_config_init,
+               .suspend                = genphy_suspend,
+               .resume                 = genphy_resume,
+               .soft_reset             = genphy_soft_reset,
                .get_wol                = mxl86110_get_wol,
                .set_wol                = mxl86110_set_wol,
                .led_brightness_set     = mxl86110_led_brightness_set,