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[2003:ea:8f38:4600:15f8:68c8:25bd:c1f8]) by smtp.googlemail.com with ESMTPSA id k13sm48751069wri.27.2021.04.07.08.54.04 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 07 Apr 2021 08:54:07 -0700 (PDT) Subject: [PATCH net-next 2/3] net: fec: use mac-managed PHY PM From: Heiner Kallweit To: Andrew Lunn , Russell King - ARM Linux , Jakub Kicinski , David Miller , Fugang Duan Cc: "netdev@vger.kernel.org" , Joakim Zhang References: <9e695411-ab1d-34fe-8b90-3e8192ab84f6@gmail.com> Message-ID: Date: Wed, 7 Apr 2021 17:52:45 +0200 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.9.0 MIME-Version: 1.0 In-Reply-To: <9e695411-ab1d-34fe-8b90-3e8192ab84f6@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use the new mac_managed_pm flag to work around an issue with KSZ8081 PHY that becomes unstable when a soft reset is triggered during aneg. Reported-by: Joakim Zhang Tested-by: Joakim Zhang Signed-off-by: Heiner Kallweit --- drivers/net/ethernet/freescale/fec_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c index 3db882322..70aea9c27 100644 --- a/drivers/net/ethernet/freescale/fec_main.c +++ b/drivers/net/ethernet/freescale/fec_main.c @@ -2048,6 +2048,8 @@ static int fec_enet_mii_probe(struct net_device *ndev) fep->link = 0; fep->full_duplex = 0; + phy_dev->mac_managed_pm = 1; + phy_attached_info(phy_dev); return 0; @@ -3864,6 +3866,7 @@ static int __maybe_unused fec_resume(struct device *dev) netif_device_attach(ndev); netif_tx_unlock_bh(ndev); napi_enable(&fep->napi); + phy_init_hw(ndev->phydev); phy_start(ndev->phydev); } rtnl_unlock(); -- 2.31.1