diff options
Diffstat (limited to 'target/linux/generic/pending-4.19/747-net-phylink-support-Clause-45-PHYs-on-SFP-modules.patch')
| -rw-r--r-- | target/linux/generic/pending-4.19/747-net-phylink-support-Clause-45-PHYs-on-SFP-modules.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/target/linux/generic/pending-4.19/747-net-phylink-support-Clause-45-PHYs-on-SFP-modules.patch b/target/linux/generic/pending-4.19/747-net-phylink-support-Clause-45-PHYs-on-SFP-modules.patch new file mode 100644 index 0000000000..2cea118c82 --- /dev/null +++ b/target/linux/generic/pending-4.19/747-net-phylink-support-Clause-45-PHYs-on-SFP-modules.patch @@ -0,0 +1,89 @@ +From caf32f96f13df7d3ae6cb8bf8001c88ae22025ca Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 8 Nov 2019 15:28:22 +0000 +Subject: [PATCH 650/660] net: phylink: support Clause 45 PHYs on SFP+ modules + +Some SFP+ modules have Clause 45 PHYs embedded on them, which need a +little more handling in order to ensure that they are correctly setup, +as they switch the PHY link mode according to the negotiated speed. + +With Clause 22 PHYs, we assumed that they would operate in SGMII mode, +but this assumption is now false. Adapt phylink to support Clause 45 +PHYs on SFP+ modules. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/phylink.c | 21 ++++++++++++++++----- + 1 file changed, 16 insertions(+), 5 deletions(-) + +--- a/drivers/net/phy/phylink.c ++++ b/drivers/net/phy/phylink.c +@@ -671,7 +671,8 @@ static void phylink_phy_change(struct ph + phy_duplex_to_str(phydev->duplex)); + } + +-static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy) ++static int phylink_bringup_phy(struct phylink *pl, struct phy_device *phy, ++ phy_interface_t interface) + { + struct phylink_link_state config; + __ETHTOOL_DECLARE_LINK_MODE_MASK(supported); +@@ -691,7 +692,7 @@ static int phylink_bringup_phy(struct ph + ethtool_convert_legacy_u32_to_link_mode(supported, phy->supported); + ethtool_convert_legacy_u32_to_link_mode(config.advertising, + phy->advertising); +- config.interface = pl->link_config.interface; ++ config.interface = interface; + + ret = phylink_validate(pl, supported, &config); + if (ret) +@@ -707,6 +708,7 @@ static int phylink_bringup_phy(struct ph + mutex_lock(&phy->lock); + mutex_lock(&pl->state_mutex); + pl->phydev = phy; ++ pl->phy_state.interface = interface; + linkmode_copy(pl->supported, supported); + linkmode_copy(pl->link_config.advertising, config.advertising); + +@@ -771,7 +773,7 @@ int phylink_connect_phy(struct phylink * + if (ret < 0) + return ret; + +- ret = phylink_bringup_phy(pl, phy); ++ ret = phylink_bringup_phy(pl, phy, pl->link_config.interface); + if (ret) + phy_detach(phy); + +@@ -824,7 +826,7 @@ int phylink_of_phy_connect(struct phylin + if (!phy_dev) + return -ENODEV; + +- ret = phylink_bringup_phy(pl, phy_dev); ++ ret = phylink_bringup_phy(pl, phy_dev, pl->link_config.interface); + if (ret) + phy_detach(phy_dev); + +@@ -1759,13 +1761,22 @@ static void phylink_sfp_link_up(void *up + static int phylink_sfp_connect_phy(void *upstream, struct phy_device *phy) + { + struct phylink *pl = upstream; ++ phy_interface_t interface = pl->link_config.interface; + int ret; + + ret = phylink_attach_phy(pl, phy, pl->link_config.interface); + if (ret < 0) + return ret; + +- ret = phylink_bringup_phy(pl, phy); ++ /* Clause 45 PHYs switch their Serdes lane between several different ++ * modes, normally 10GBASE-R, SGMII. Some use 2500BASE-X for 2.5G ++ * speeds. We really need to know which interface modes the PHY and ++ * MAC supports to properly work out which linkmodes can be supported. ++ */ ++ if (phy->is_c45) ++ interface = PHY_INTERFACE_MODE_NA; ++ ++ ret = phylink_bringup_phy(pl, phy, interface); + if (ret) + phy_detach(phy); + |