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Miller" , Jakub Kicinski , Madalin Bucur , Camelia Alexandra Groza , netdev@vger.kernel.org Cc: Eric Dumazet , "linuxppc-dev @ lists . ozlabs . org" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Paolo Abeni , Sean Anderson Subject: [PATCH net-next v7 05/10] net: fman: memac: Add serdes support Date: Mon, 17 Oct 2022 16:22:36 -0400 Message-Id: <20221017202241.1741671-6-sean.anderson@seco.com> X-Mailer: git-send-email 2.35.1.1320.gc452695387.dirty In-Reply-To: <20221017202241.1741671-1-sean.anderson@seco.com> References: <20221017202241.1741671-1-sean.anderson@seco.com> X-ClientProxiedBy: SJ0PR03CA0251.namprd03.prod.outlook.com (2603:10b6:a03:3a0::16) To DB7PR03MB4972.eurprd03.prod.outlook.com (2603:10a6:10:7d::22) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB7PR03MB4972:EE_|DBBPR03MB6761:EE_ X-MS-Office365-Filtering-Correlation-Id: 20518067-ea49-4c6f-f4b4-08dab07d6f23 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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This is primarly in preparation for phylink conversion, which will then change the serdes mode dynamically. Signed-off-by: Sean Anderson --- (no changes since v4) Changes in v4: - Don't fail if phy support was not compiled in .../net/ethernet/freescale/fman/fman_memac.c | 49 ++++++++++++++++++- 1 file changed, 47 insertions(+), 2 deletions(-) diff --git a/drivers/net/ethernet/freescale/fman/fman_memac.c b/drivers/net/ethernet/freescale/fman/fman_memac.c index 32d26cf17843..56a29f505590 100644 --- a/drivers/net/ethernet/freescale/fman/fman_memac.c +++ b/drivers/net/ethernet/freescale/fman/fman_memac.c @@ -13,6 +13,7 @@ #include #include #include +#include #include /* PCS registers */ @@ -324,6 +325,7 @@ struct fman_mac { void *fm; struct fman_rev_info fm_rev_info; bool basex_if; + struct phy *serdes; struct phy_device *pcsphy; bool allmulti_enabled; }; @@ -1203,17 +1205,56 @@ int memac_initialization(struct mac_device *mac_dev, } } + memac->serdes = devm_of_phy_get(mac_dev->dev, mac_node, "serdes"); + err = PTR_ERR(memac->serdes); + if (err == -ENODEV || err == -ENOSYS) { + dev_dbg(mac_dev->dev, "could not get (optional) serdes\n"); + memac->serdes = NULL; + } else if (IS_ERR(memac->serdes)) { + dev_err_probe(mac_dev->dev, err, "could not get serdes\n"); + goto _return_fm_mac_free; + } else { + err = phy_init(memac->serdes); + if (err) { + dev_err_probe(mac_dev->dev, err, + "could not initialize serdes\n"); + goto _return_fm_mac_free; + } + + err = phy_power_on(memac->serdes); + if (err) { + dev_err_probe(mac_dev->dev, err, + "could not power on serdes\n"); + goto _return_phy_exit; + } + + if (memac->phy_if == PHY_INTERFACE_MODE_SGMII || + memac->phy_if == PHY_INTERFACE_MODE_1000BASEX || + memac->phy_if == PHY_INTERFACE_MODE_2500BASEX || + memac->phy_if == PHY_INTERFACE_MODE_QSGMII || + memac->phy_if == PHY_INTERFACE_MODE_XGMII) { + err = phy_set_mode_ext(memac->serdes, PHY_MODE_ETHERNET, + memac->phy_if); + if (err) { + dev_err_probe(mac_dev->dev, err, + "could not set serdes mode to %s\n", + phy_modes(memac->phy_if)); + goto _return_phy_power_off; + } + } + } + if (!mac_dev->phy_node && of_phy_is_fixed_link(mac_node)) { struct phy_device *phy; err = of_phy_register_fixed_link(mac_node); if (err) - goto _return_fm_mac_free; + goto _return_phy_power_off; fixed_link = kzalloc(sizeof(*fixed_link), GFP_KERNEL); if (!fixed_link) { err = -ENOMEM; - goto _return_fm_mac_free; + goto _return_phy_power_off; } mac_dev->phy_node = of_node_get(mac_node); @@ -1242,6 +1283,10 @@ int memac_initialization(struct mac_device *mac_dev, goto _return; +_return_phy_power_off: + phy_power_off(memac->serdes); +_return_phy_exit: + phy_exit(memac->serdes); _return_fixed_link_free: kfree(fixed_link); _return_fm_mac_free: