5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Diogo Silva diogompaissilva@gmail.com
[ Upstream commit 256748d5480bb3c4b731236c6d6fc86a8e2815d8 ]
DP83848 datasheet (section 4.7.2) indicates that the reset pin should be toggled after the clocks are running. Add the PHY_RST_AFTER_CLK_EN to make sure that this indication is respected.
In my experience not having this flag enabled would lead to, on some boots, the wrong MII mode being selected if the PHY was initialized on the bootloader and was receiving data during Linux boot.
Signed-off-by: Diogo Silva diogompaissilva@gmail.com Reviewed-by: Andrew Lunn andrew@lunn.ch Fixes: 34e45ad9378c ("net: phy: dp83848: Add TI DP83848 Ethernet PHY") Link: https://patch.msgid.link/20241102151504.811306-1-paissilva@ld-100007.ds1.int... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/phy/dp83848.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/net/phy/dp83848.c b/drivers/net/phy/dp83848.c index 937061acfc613..351411f0aa6f4 100644 --- a/drivers/net/phy/dp83848.c +++ b/drivers/net/phy/dp83848.c @@ -147,6 +147,8 @@ MODULE_DEVICE_TABLE(mdio, dp83848_tbl); /* IRQ related */ \ .config_intr = dp83848_config_intr, \ .handle_interrupt = dp83848_handle_interrupt, \ + \ + .flags = PHY_RST_AFTER_CLK_EN, \ }
static struct phy_driver dp83848_driver[] = {