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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , , , , Tristram Ha Subject: [PATCH RFC net-next v2 1/3] net: pcs: xpcs: Activate DW_XPCS_SGMII_MODE_MAC_MANUAL for KSZ9477 Date: Thu, 6 Feb 2025 18:43:14 -0800 Message-ID: <20250207024316.25334-2-Tristram.Ha@microchip.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250207024316.25334-1-Tristram.Ha@microchip.com> References: <20250207024316.25334-1-Tristram.Ha@microchip.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" From: Tristram Ha Microchip KSZ9477 SGMII uses old XPCS IP and requires special code to operate correctly. A special value from PMA device ids will be used to activate DW_XPCS_SGMII_MODE_MAC_MANUL. Signed-off-by: Tristram Ha --- drivers/net/pcs/pcs-xpcs.c | 2 ++ include/linux/pcs/pcs-xpcs.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c index d522e4a5a138..5aad67ff4a4f 100644 --- a/drivers/net/pcs/pcs-xpcs.c +++ b/drivers/net/pcs/pcs-xpcs.c @@ -1482,6 +1482,8 @@ static struct dw_xpcs *xpcs_create(struct mdio_device= *mdiodev) xpcs->sgmii_10_100_8bit =3D DW_XPCS_SGMII_10_100_8BIT; xpcs->sgmii_mode =3D DW_XPCS_SGMII_MODE_PHY_HW; } else { + if (xpcs->info.pma =3D=3D MICROCHIP_KSZ9477_PMA_ID) + xpcs->sgmii_mode =3D DW_XPCS_SGMII_MODE_MAC_MANUAL; xpcs->need_reset =3D true; } =20 diff --git a/include/linux/pcs/pcs-xpcs.h b/include/linux/pcs/pcs-xpcs.h index 733f4ddd2ef1..637d5356a961 100644 --- a/include/linux/pcs/pcs-xpcs.h +++ b/include/linux/pcs/pcs-xpcs.h @@ -39,6 +39,7 @@ enum dw_xpcs_pma_id { DW_XPCS_PMA_GEN5_10G_ID, DW_XPCS_PMA_GEN5_12G_ID, WX_TXGBE_XPCS_PMA_10G_ID =3D 0x0018fc80, + MICROCHIP_KSZ9477_PMA_ID =3D 0x00229477, }; =20 struct dw_xpcs_info { --=20 2.34.1