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Miller" , Jakub Kicinski , linux-kernel@vger.kernel.org Cc: Andrew Lunn , Heiner Kallweit , Russell King , Sean Anderson , Claudiu Beznea , Nicolas Ferre Subject: [RFC net-next PATCH 11/16] net: macb: Support restarting PCS autonegotiation Date: Mon, 4 Oct 2021 15:15:22 -0400 Message-Id: <20211004191527.1610759-12-sean.anderson@seco.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211004191527.1610759-1-sean.anderson@seco.com> References: <20211004191527.1610759-1-sean.anderson@seco.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: MN2PR08CA0023.namprd08.prod.outlook.com (2603:10b6:208:239::28) To DB7PR03MB4523.eurprd03.prod.outlook.com (2603:10a6:10:19::27) MIME-Version: 1.0 Received: from plantagenet.inhand.com (50.195.82.171) by MN2PR08CA0023.namprd08.prod.outlook.com (2603:10b6:208:239::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4566.17 via Frontend Transport; Mon, 4 Oct 2021 19:16:03 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: fe3b666a-cb2a-4349-49c1-08d9876b6954 X-MS-TrafficTypeDiagnostic: DB9PR03MB7434: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:3044; 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Signed-off-by: Sean Anderson --- drivers/net/ethernet/cadence/macb_main.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 08dcccd94f87..b938cdf4bb59 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -662,6 +662,21 @@ static int macb_pcs_config(struct phylink_pcs *pcs, unsigned int mode, return changed; } +static void macb_pcs_an_restart(struct phylink_pcs *pcs) +{ + struct macb *bp = pcs_to_macb(pcs); + u32 bmcr; + unsigned long flags; + + spin_lock_irqsave(&bp->lock, flags); + + bmcr = gem_readl(bp, PCSCNTRL); + bmcr |= BMCR_ANENABLE; + gem_writel(bp, PCSCNTRL, bmcr); + + spin_lock_irqsave(&bp->lock, flags); +} + static void macb_usx_pcs_get_state(struct phylink_pcs *pcs, struct phylink_link_state *state) { @@ -733,6 +748,7 @@ static const struct phylink_pcs_ops macb_phylink_usx_pcs_ops = { static const struct phylink_pcs_ops macb_phylink_pcs_ops = { .pcs_get_state = macb_pcs_get_state, .pcs_config = macb_pcs_config, + .pcs_an_restart = macb_pcs_an_restart, }; static void macb_mac_config(struct phylink_config *config, unsigned int mode, -- 2.25.1