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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiner Kallweit , Russell King , Simon Horman , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Maxime Chevallier Subject: [PATCH net-next v12 2/5] net: phy: introduce PHY_INTERFACE_MODE_REVSGMII Date: Fri, 26 Sep 2025 21:50:49 +0800 Message-ID: <20250926135057.2323738-3-mmyangfl@gmail.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250926135057.2323738-1-mmyangfl@gmail.com> References: <20250926135057.2323738-1-mmyangfl@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The "reverse SGMII" protocol name is an invention derived from "reverse MII" and "reverse RMII", this means: "behave like an SGMII PHY". Signed-off-by: David Yang Reviewed-by: Maxime Chevallier --- drivers/net/phy/phy-core.c | 1 + drivers/net/phy/phy_caps.c | 1 + drivers/net/phy/phylink.c | 1 + include/linux/phy.h | 4 ++++ 4 files changed, 7 insertions(+) diff --git a/drivers/net/phy/phy-core.c b/drivers/net/phy/phy-core.c index 605ca20ae192..074645840cd5 100644 --- a/drivers/net/phy/phy-core.c +++ b/drivers/net/phy/phy-core.c @@ -132,6 +132,7 @@ int phy_interface_num_ports(phy_interface_t interface) case PHY_INTERFACE_MODE_TRGMII: case PHY_INTERFACE_MODE_USXGMII: case PHY_INTERFACE_MODE_SGMII: + case PHY_INTERFACE_MODE_REVSGMII: case PHY_INTERFACE_MODE_SMII: case PHY_INTERFACE_MODE_1000BASEX: case PHY_INTERFACE_MODE_2500BASEX: diff --git a/drivers/net/phy/phy_caps.c b/drivers/net/phy/phy_caps.c index 2cc9ee97e867..9a9a8afc056f 100644 --- a/drivers/net/phy/phy_caps.c +++ b/drivers/net/phy/phy_caps.c @@ -299,6 +299,7 @@ unsigned long phy_caps_from_interface(phy_interface_t i= nterface) case PHY_INTERFACE_MODE_PSGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: + case PHY_INTERFACE_MODE_REVSGMII: case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_GMII: link_caps |=3D BIT(LINK_CAPA_1000HD) | BIT(LINK_CAPA_1000FD); diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 9d7799ea1c17..910e93d2a324 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -255,6 +255,7 @@ static int phylink_interface_max_speed(phy_interface_t = interface) case PHY_INTERFACE_MODE_PSGMII: case PHY_INTERFACE_MODE_QSGMII: case PHY_INTERFACE_MODE_QUSGMII: + case PHY_INTERFACE_MODE_REVSGMII: case PHY_INTERFACE_MODE_SGMII: case PHY_INTERFACE_MODE_GMII: return SPEED_1000; diff --git a/include/linux/phy.h b/include/linux/phy.h index d09fc42e61f3..7390014fccb5 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -107,6 +107,7 @@ extern const int phy_basic_ports_array[3]; * @PHY_INTERFACE_MODE_LAUI: 50 Gigabit Attachment Unit Interface * @PHY_INTERFACE_MODE_100GBASEP: 100GBase-P - with Clause 134 FEC * @PHY_INTERFACE_MODE_MIILITE: MII-Lite - MII without RXER TXER CRS COL + * @PHY_INTERFACE_MODE_REVSGMII: Serial gigabit media-independent interfac= e in PHY role * @PHY_INTERFACE_MODE_MAX: Book keeping * * Describes the interface between the MAC and PHY. @@ -152,6 +153,7 @@ typedef enum { PHY_INTERFACE_MODE_LAUI, PHY_INTERFACE_MODE_100GBASEP, PHY_INTERFACE_MODE_MIILITE, + PHY_INTERFACE_MODE_REVSGMII, PHY_INTERFACE_MODE_MAX, } phy_interface_t; =20 @@ -286,6 +288,8 @@ static inline const char *phy_modes(phy_interface_t int= erface) return "100gbase-p"; case PHY_INTERFACE_MODE_MIILITE: return "mii-lite"; + case PHY_INTERFACE_MODE_REVSGMII: + return "rev-sgmii"; default: return "unknown"; } --=20 2.51.0