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net: phy: add a new phy_device flag to keep preamble before sfd

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Add a new flag, PHY_F_KEEP_PREAMBLE_BEFORE_SFD, to indicate that the PHY
shall not remove the preamble before the SFD if it supports it. MACs
that do not support receiving frames without a preamble can set this
flag.

Signed-off-by: Stefan Eichenberger <stefan.eichenberger@toradex.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Link: https://patch.msgid.link/20260120203905.23805-2-eichest@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Stefan Eichenberger
2026-01-20 21:30:02 +01:00
committed by Jakub Kicinski
parent 31d44a3782
commit 2153e151c2
1 changed files with 3 additions and 2 deletions
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5
include/linux/phy.h
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@@ -810,8 +810,9 @@ struct phy_device {
};
/* Generic phy_device::dev_flags */
#define PHY_F_NO_IRQ 0x80000000
#define PHY_F_RXC_ALWAYS_ON 0x40000000
#define PHY_F_NO_IRQ 0x80000000
#define PHY_F_RXC_ALWAYS_ON 0x40000000
#define PHY_F_KEEP_PREAMBLE_BEFORE_SFD 0x20000000
#define to_phy_device(__dev) container_of_const(to_mdio_device(__dev), struct phy_device, mdio)