From c940646ed11ed6580a2b7749d05c873e39ad7f42 Mon Sep 17 00:00:00 2001 From: Valentin-catalin Neacsu Date: Wed, 13 Feb 2019 09:14:53 +0000 Subject: [PATCH] net: phy: aquantia: Set only autoneg on in register 4.c441 For AQR405 in register 4.c441 bit 15 was override with 0. This caused the phy to not negotiate at 2.5GB rate with mac. To avoid this override it needed first to know the previous value of reg 4.c441 and set only bit 3. Signed-off-by: Valentin Catalin Neacsu Acked-by: Joe Hershberger --- drivers/net/phy/aquantia.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/net/phy/aquantia.c b/drivers/net/phy/aquantia.c index 12df09877d..5c3298d612 100644 --- a/drivers/net/phy/aquantia.c +++ b/drivers/net/phy/aquantia.c @@ -303,9 +303,14 @@ int aquantia_config(struct phy_device *phydev) AQUANTIA_SYSTEM_INTERFACE_SR); /* If SI is USXGMII then start USXGMII autoneg */ if ((val & AQUANTIA_SI_IN_USE_MASK) == AQUANTIA_SI_USXGMII) { + reg_val1 = phy_read(phydev, MDIO_MMD_PHYXS, + AQUANTIA_VENDOR_PROVISIONING_REG); + + reg_val1 |= AQUANTIA_USX_AUTONEG_CONTROL_ENA; + phy_write(phydev, MDIO_MMD_PHYXS, AQUANTIA_VENDOR_PROVISIONING_REG, - AQUANTIA_USX_AUTONEG_CONTROL_ENA); + reg_val1); printf("%s: system interface USXGMII\n", phydev->dev->name); } else { -- 2.39.5