6.16-stable review patch. If anyone has any objections, please let me know.
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From: Biju Das biju.das.jz@bp.renesas.com
[ Upstream commit f25a7eaa897f21396e99f90809af82ca553c9d14 ]
The Renesas RZ/G3E SMARC EVK uses KSZ9131RNXC phy. On deep power state, PHY loses the power and on wakeup the rgmii delays are not reconfigured causing it to fail.
Replace the callback kszphy_resume()->ksz9131_resume() for reconfiguring the rgmii_delay when it exits from PM suspend state.
Signed-off-by: Biju Das biju.das.jz@bp.renesas.com Reviewed-by: Andrew Lunn andrew@lunn.ch Link: https://patch.msgid.link/20250711054029.48536-1-biju.das.jz@bp.renesas.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/phy/micrel.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-)
diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c index 50c6a4e8cfa1..52c677811616 100644 --- a/drivers/net/phy/micrel.c +++ b/drivers/net/phy/micrel.c @@ -5405,6 +5405,14 @@ static int lan8841_suspend(struct phy_device *phydev) return kszphy_generic_suspend(phydev); }
+static int ksz9131_resume(struct phy_device *phydev) +{ + if (phydev->suspended && phy_interface_is_rgmii(phydev)) + ksz9131_config_rgmii_delay(phydev); + + return kszphy_resume(phydev); +} + static struct phy_driver ksphy_driver[] = { { .phy_id = PHY_ID_KS8737, @@ -5651,7 +5659,7 @@ static struct phy_driver ksphy_driver[] = { .get_strings = kszphy_get_strings, .get_stats = kszphy_get_stats, .suspend = kszphy_suspend, - .resume = kszphy_resume, + .resume = ksz9131_resume, .cable_test_start = ksz9x31_cable_test_start, .cable_test_get_status = ksz9x31_cable_test_get_status, .get_features = ksz9477_get_features,