From 84e57e7dfb395fc16bec50cf477d25144ab9747a Mon Sep 17 00:00:00 2001 From: "Radu Pirea (NXP OSS)" Date: Wed, 13 Dec 2023 18:14:21 +0200 Subject: [PATCH] net: phy: nxp-c45-tja11xx: read PHY the speed from hardware Read PHY speed from hardware instead of assuming 100Mbps by default. The TJA1103 works only at 100Mbps, but the driver will support more PHYs. Signed-off-by: "Radu Pirea (NXP OSS)" --- drivers/net/phy/nxp-c45-tja11xx.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/nxp-c45-tja11xx.c b/drivers/net/phy/nxp-c45-tja11xx.c index 38fb38b9fb..27d871c4b6 100644 --- a/drivers/net/phy/nxp-c45-tja11xx.c +++ b/drivers/net/phy/nxp-c45-tja11xx.c @@ -306,13 +306,33 @@ static int nxp_c45_config(struct phy_device *phydev) return nxp_c45_start_op(phydev); } +static int nxp_c45_speed(struct phy_device *phydev) +{ + int val; + + val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_CTRL1); + if (val < 0) + return val; + + if (val & MDIO_PMA_CTRL1_SPEED100) + phydev->speed = SPEED_100; + else + phydev->speed = 0; + + return 0; +} + static int nxp_c45_startup(struct phy_device *phydev) { u32 reg; + int ret; reg = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_STAT1); phydev->link = !!(reg & MDIO_STAT1_LSTATUS); - phydev->speed = SPEED_100; + ret = nxp_c45_speed(phydev); + if (ret < 0) + return ret; + phydev->duplex = DUPLEX_FULL; return 0; } -- 2.39.5