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Message-Id: <20221017202241.1741671-6-sean.anderson@seco.com> Date: Mon, 17 Oct 2022 16:22:36 -0400 From: Sean Anderson <sean.anderson@...o.com> To: "David S . Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Madalin Bucur <madalin.bucur@....com>, Camelia Alexandra Groza <camelia.groza@....com>, netdev@...r.kernel.org Cc: Eric Dumazet <edumazet@...gle.com>, "linuxppc-dev @ lists . ozlabs . org" <linuxppc-dev@...ts.ozlabs.org>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Russell King <linux@...linux.org.uk>, Paolo Abeni <pabeni@...hat.com>, Sean Anderson <sean.anderson@...o.com> Subject: [PATCH net-next v7 05/10] net: fman: memac: Add serdes support This adds support for using a serdes which has to be configured. This is primarly in preparation for phylink conversion, which will then change the serdes mode dynamically. Signed-off-by: Sean Anderson <sean.anderson@...o.com> --- (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 <linux/io.h> #include <linux/phy.h> #include <linux/phy_fixed.h> +#include <linux/phy/phy.h> #include <linux/of_mdio.h> /* 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: -- 2.35.1.1320.gc452695387.dirty
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