This is a note to let you know that I've just added the patch titled
net: phy: ti: add PHY_RST_AFTER_CLK_EN flag
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-phy-ti-add-phy_rst_after_clk_en-flag.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e0a04e20a489d02e469549f3a941fcc76739fc3d
Author: Diogo Silva <diogompaissilva@xxxxxxxxx>
Date: Sat Nov 2 16:15:05 2024 +0100
net: phy: ti: add PHY_RST_AFTER_CLK_EN flag
[ 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@xxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Fixes: 34e45ad9378c ("net: phy: dp83848: Add TI DP83848 Ethernet PHY")
Link: https://patch.msgid.link/20241102151504.811306-1-paissilva@ld-100007.ds1.internal
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
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[] = {
