From b8537d1f5bbd75f1f5fa3c66f6b7b72810b1915f Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 7 Apr 2022 15:52:21 +0100 Subject: net: mtk_eth_soc: correct 802.3z duplex setting MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Phylink does not guarantee that state->duplex will be set correctly in the mac_config() call, so it's a bug that the driver makes use of it. Move the 802.3z PCS duplex configuration to mac_link_up(). Tested-by: Marek Behún Signed-off-by: Russell King --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 16 ++++++++++++---- drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 + drivers/net/ethernet/mediatek/mtk_sgmii.c | 22 ++++++++++++++++------ 3 files changed, 29 insertions(+), 10 deletions(-) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index e491d43f049a..6fedfa8fceb1 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -482,8 +482,18 @@ static void mtk_mac_link_up(struct phylink_config *config, { struct mtk_mac *mac = container_of(config, struct mtk_mac, phylink_config); - u32 mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); + u32 mcr; + + if (phy_interface_mode_is_8023z(interface)) { + struct mtk_eth *eth = mac->hw; + + /* Decide how GMAC and SGMIISYS be mapped */ + int sid = (MTK_HAS_CAPS(eth->soc->caps, MTK_SHARED_SGMII)) ? + 0 : mac->id; + mtk_sgmii_link_up(eth->sgmii, sid, speed, duplex); + } + mcr = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); mcr &= ~(MAC_MCR_SPEED_100 | MAC_MCR_SPEED_1000 | MAC_MCR_FORCE_DPX | MAC_MCR_FORCE_TX_FC | MAC_MCR_FORCE_RX_FC); @@ -2972,9 +2982,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np) mac->phylink_config.dev = ð->netdev[id]->dev; mac->phylink_config.type = PHYLINK_NETDEV; - /* This driver makes use of state->speed/state->duplex in - * mac_config - */ + /* This driver makes use of state->speed in mac_config */ mac->phylink_config.legacy_pre_march2020 = true; mac->phylink_config.mac_capabilities = MAC_ASYM_PAUSE | MAC_SYM_PAUSE | MAC_10 | MAC_100 | MAC_1000 | MAC_2500FD; diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h index f31ef594008a..1912f84922c8 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h @@ -1007,6 +1007,7 @@ int mtk_sgmii_init(struct mtk_sgmii *ss, struct device_node *np, int mtk_sgmii_setup_mode_an(struct mtk_sgmii *ss, int id); int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, const struct phylink_link_state *state); +void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex); void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id); int mtk_gmac_sgmii_path_setup(struct mtk_eth *eth, int mac_id); diff --git a/drivers/net/ethernet/mediatek/mtk_sgmii.c b/drivers/net/ethernet/mediatek/mtk_sgmii.c index d378ecdf56cc..f07a9d50a770 100644 --- a/drivers/net/ethernet/mediatek/mtk_sgmii.c +++ b/drivers/net/ethernet/mediatek/mtk_sgmii.c @@ -83,14 +83,10 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, val &= ~SGMII_AN_ENABLE; regmap_write(ss->regmap[id], SGMSYS_PCS_CONTROL_1, val); - /* SGMII force mode setting */ + /* Set the speed etc but leave the duplex unchanged */ regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val); - val &= ~SGMII_IF_MODE_MASK; + val &= SGMII_DUPLEX_FULL | ~SGMII_IF_MODE_MASK; val |= SGMII_SPEED_1000; - - if (state->duplex == DUPLEX_FULL) - val |= SGMII_DUPLEX_FULL; - regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val); /* Release PHYA power down state */ @@ -101,6 +97,20 @@ int mtk_sgmii_setup_mode_force(struct mtk_sgmii *ss, int id, return 0; } +/* For 1000BASE-X and 2500BASE-X interface modes */ +void mtk_sgmii_link_up(struct mtk_sgmii *ss, int id, int speed, int duplex) +{ + unsigned int val; + + /* SGMII force duplex setting */ + regmap_read(ss->regmap[id], SGMSYS_SGMII_MODE, &val); + val &= ~SGMII_DUPLEX_FULL; + if (duplex == DUPLEX_FULL) + val |= SGMII_DUPLEX_FULL; + + regmap_write(ss->regmap[id], SGMSYS_SGMII_MODE, val); +} + void mtk_sgmii_restart_an(struct mtk_eth *eth, int mac_id) { struct mtk_sgmii *ss = eth->sgmii; -- cgit