diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 58 |
1 files changed, 46 insertions, 12 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c index 466c4002f00d..901a3c1959fa 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c @@ -21,6 +21,7 @@ #define RGMII_IO_MACRO_CONFIG2 0x1C #define RGMII_IO_MACRO_DEBUG1 0x20 #define EMAC_SYSTEM_LOW_POWER_DEBUG 0x28 +#define EMAC_WRAPPER_SGMII_PHY_CNTRL1 0xf4 /* RGMII_IO_MACRO_CONFIG fields */ #define RGMII_CONFIG_FUNC_CLK_EN BIT(30) @@ -79,6 +80,9 @@ #define ETHQOS_MAC_CTRL_SPEED_MODE BIT(14) #define ETHQOS_MAC_CTRL_PORT_SEL BIT(15) +/* EMAC_WRAPPER_SGMII_PHY_CNTRL1 bits */ +#define SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN BIT(3) + #define SGMII_10M_RX_CLK_DVDR 0x31 struct ethqos_emac_por { @@ -95,6 +99,7 @@ struct ethqos_emac_driver_data { bool has_integrated_pcs; u32 dma_addr_width; struct dwmac4_addrs dwmac4_addrs; + bool needs_sgmii_loopback; }; struct qcom_ethqos { @@ -114,6 +119,7 @@ struct qcom_ethqos { unsigned int num_por; bool rgmii_config_loopback_en; bool has_emac_ge_3; + bool needs_sgmii_loopback; }; static int rgmii_readl(struct qcom_ethqos *ethqos, unsigned int offset) @@ -191,8 +197,22 @@ ethqos_update_link_clk(struct qcom_ethqos *ethqos, unsigned int speed) clk_set_rate(ethqos->link_clk, ethqos->link_clk_rate); } +static void +qcom_ethqos_set_sgmii_loopback(struct qcom_ethqos *ethqos, bool enable) +{ + if (!ethqos->needs_sgmii_loopback || + ethqos->phy_mode != PHY_INTERFACE_MODE_2500BASEX) + return; + + rgmii_updatel(ethqos, + SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN, + enable ? SGMII_PHY_CNTRL1_SGMII_TX_TO_RX_LOOPBACK_EN : 0, + EMAC_WRAPPER_SGMII_PHY_CNTRL1); +} + static void ethqos_set_func_clk_en(struct qcom_ethqos *ethqos) { + qcom_ethqos_set_sgmii_loopback(ethqos, true); rgmii_updatel(ethqos, RGMII_CONFIG_FUNC_CLK_EN, RGMII_CONFIG_FUNC_CLK_EN, RGMII_IO_MACRO_CONFIG); } @@ -277,6 +297,7 @@ static const struct ethqos_emac_driver_data emac_v4_0_0_data = { .has_emac_ge_3 = true, .link_clk_name = "phyaux", .has_integrated_pcs = true, + .needs_sgmii_loopback = true, .dma_addr_width = 36, .dwmac4_addrs = { .dma_chan = 0x00008100, @@ -607,6 +628,14 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos) return 0; } +static void ethqos_set_serdes_speed(struct qcom_ethqos *ethqos, int speed) +{ + if (ethqos->serdes_speed != speed) { + phy_set_speed(ethqos->serdes_phy, speed); + ethqos->serdes_speed = speed; + } +} + /* On interface toggle MAC registers gets reset. * Configure MAC block for SGMII on ethernet phy link up */ @@ -624,9 +653,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_IO_MACRO_CONFIG2); - if (ethqos->serdes_speed != SPEED_2500) - phy_set_speed(ethqos->serdes_phy, SPEED_2500); - ethqos->serdes_speed = SPEED_2500; + ethqos_set_serdes_speed(ethqos, SPEED_2500); stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 0, 0, 0); break; case SPEED_1000: @@ -634,16 +661,12 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, RGMII_IO_MACRO_CONFIG2); - if (ethqos->serdes_speed != SPEED_1000) - phy_set_speed(ethqos->serdes_phy, SPEED_1000); - ethqos->serdes_speed = SPEED_1000; + ethqos_set_serdes_speed(ethqos, SPEED_1000); stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0); break; case SPEED_100: val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE; - if (ethqos->serdes_speed != SPEED_1000) - phy_set_speed(ethqos->serdes_phy, SPEED_1000); - ethqos->serdes_speed = SPEED_1000; + ethqos_set_serdes_speed(ethqos, SPEED_1000); stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0); break; case SPEED_10: @@ -653,9 +676,7 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) FIELD_PREP(RGMII_CONFIG_SGMII_CLK_DVDR, SGMII_10M_RX_CLK_DVDR), RGMII_IO_MACRO_CONFIG); - if (ethqos->serdes_speed != SPEED_1000) - phy_set_speed(ethqos->serdes_phy, ethqos->speed); - ethqos->serdes_speed = SPEED_1000; + ethqos_set_serdes_speed(ethqos, SPEED_1000); stmmac_pcs_ctrl_ane(priv, priv->ioaddr, 1, 0, 0); break; } @@ -665,6 +686,14 @@ static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) return val; } +static void qcom_ethqos_speed_mode_2500(struct net_device *ndev, void *data) +{ + struct stmmac_priv *priv = netdev_priv(ndev); + + priv->plat->max_speed = 2500; + priv->plat->phy_interface = PHY_INTERFACE_MODE_2500BASEX; +} + static int ethqos_configure(struct qcom_ethqos *ethqos) { return ethqos->configure_func(ethqos); @@ -674,6 +703,7 @@ static void ethqos_fix_mac_speed(void *priv, unsigned int speed, unsigned int mo { struct qcom_ethqos *ethqos = priv; + qcom_ethqos_set_sgmii_loopback(ethqos, false); ethqos->speed = speed; ethqos_update_link_clk(ethqos, speed); ethqos_configure(ethqos); @@ -787,6 +817,9 @@ static int qcom_ethqos_probe(struct platform_device *pdev) case PHY_INTERFACE_MODE_RGMII_TXID: ethqos->configure_func = ethqos_configure_rgmii; break; + case PHY_INTERFACE_MODE_2500BASEX: + plat_dat->speed_mode_2500 = qcom_ethqos_speed_mode_2500; + fallthrough; case PHY_INTERFACE_MODE_SGMII: ethqos->configure_func = ethqos_configure_sgmii; break; @@ -809,6 +842,7 @@ static int qcom_ethqos_probe(struct platform_device *pdev) ethqos->num_por = data->num_por; ethqos->rgmii_config_loopback_en = data->rgmii_config_loopback_en; ethqos->has_emac_ge_3 = data->has_emac_ge_3; + ethqos->needs_sgmii_loopback = data->needs_sgmii_loopback; ethqos->link_clk = devm_clk_get(dev, data->link_clk_name ?: "rgmii"); if (IS_ERR(ethqos->link_clk)) |