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Tue, 20 Jan 2026 12:39:09 -0800 (PST) Received: from eichest-laptop.lan ([2a02:168:af72:0:378b:c660:2f9c:b651]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-48042c3a7c1sm850425e9.13.2026.01.20.12.39.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Jan 2026 12:39:08 -0800 (PST) From: Stefan Eichenberger To: andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com, alexandre.torgue@foss.st.com, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, hkallweit1@gmail.com, linux@armlinux.org.uk, linux-stm32@st-md-mailman.stormreply.com, maxime.chevallier@bootlin.com, francesco.dolcini@toradex.com Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, Stefan Eichenberger Subject: [PATCH net-next v3 1/3] net: phy: add a new phy_device flag to keep preamble before sfd Date: Tue, 20 Jan 2026 21:30:02 +0100 Message-ID: <20260120203905.23805-2-eichest@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260120203905.23805-1-eichest@gmail.com> References: <20260120203905.23805-1-eichest@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Stefan Eichenberger 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 --- include/linux/phy.h | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/include/linux/phy.h b/include/linux/phy.h index fbbe028cc4b7b..a978173c0e2a1 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -802,8 +802,9 @@ 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) -- 2.51.0