// SPDX-License-Identifier: GPL-2.0 /* Driver for the Texas Instruments DP83869 PHY * Copyright (C) 2019 Texas Instruments Inc. */ #include <linux/ethtool.h> #include <linux/etherdevice.h> #include <linux/kernel.h> #include <linux/mii.h> #include <linux/module.h> #include <linux/of.h> #include <linux/phy.h> #include <linux/delay.h> #include <linux/bitfield.h> #include <dt-bindings/net/ti-dp83869.h> #define DP83869_PHY_ID 0x2000a0f1 #define DP83869_DEVADDR 0x1f #define MII_DP83869_PHYCTRL 0x10 #define MII_DP83869_MICR 0x12 #define MII_DP83869_ISR 0x13 #define DP83869_CFG2 0x14 #define DP83869_CTRL 0x1f #define DP83869_CFG4 0x1e /* Extended Registers */ #define DP83869_GEN_CFG3 0x0031 #define DP83869_RGMIICTL 0x0032 #define DP83869_STRAP_STS1 0x006e #define DP83869_RGMIIDCTL 0x0086 #define DP83869_RXFCFG 0x0134 #define DP83869_RXFPMD1 0x0136 #define DP83869_RXFPMD2 0x0137 #define DP83869_RXFPMD3 0x0138 #define DP83869_RXFSOP1 0x0139 #define DP83869_RXFSOP2 0x013A #define DP83869_RXFSOP3 0x013B #define DP83869_IO_MUX_CFG 0x0170 #define DP83869_OP_MODE 0x01df #define DP83869_FX_CTRL 0x0c00 #define DP83869_SW_RESET BIT(15) #define DP83869_SW_RESTART BIT(14) /* MICR Interrupt bits */ #define MII_DP83869_MICR_AN_ERR_INT_EN BIT(15) #define MII_DP83869_MICR_SPEED_CHNG_INT_EN BIT(14) #define MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN BIT(13) #define MII_DP83869_MICR_PAGE_RXD_INT_EN BIT(12) #define MII_DP83869_MICR_AUTONEG_COMP_INT_EN BIT(11) #define MII_DP83869_MICR_LINK_STS_CHNG_INT_EN BIT(10) #define MII_DP83869_MICR_FALSE_CARRIER_INT_EN BIT(8) #define MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN BIT(4) #define MII_DP83869_MICR_WOL_INT_EN BIT(3) #define MII_DP83869_MICR_XGMII_ERR_INT_EN BIT(2) #define MII_DP83869_MICR_POL_CHNG_INT_EN BIT(1) #define MII_DP83869_MICR_JABBER_INT_EN BIT(0) #define MII_DP83869_BMCR_DEFAULT (BMCR_ANENABLE | \ BMCR_FULLDPLX | \ BMCR_SPEED1000) #define MII_DP83869_FIBER_ADVERTISE (ADVERTISED_FIBRE | \ ADVERTISED_Pause | \ ADVERTISED_Asym_Pause) /* This is the same bit mask as the BMCR so re-use the BMCR default */ #define DP83869_FX_CTRL_DEFAULT MII_DP83869_BMCR_DEFAULT /* CFG1 bits */ #define DP83869_CFG1_DEFAULT (ADVERTISE_1000HALF | \ ADVERTISE_1000FULL | \ CTL1000_AS_MASTER) /* RGMIICTL bits */ #define DP83869_RGMII_TX_CLK_DELAY_EN BIT(1) #define DP83869_RGMII_RX_CLK_DELAY_EN BIT(0) /* RGMIIDCTL */ #define DP83869_RGMII_CLK_DELAY_SHIFT 4 #define DP83869_CLK_DELAY_DEF 7 /* STRAP_STS1 bits */ #define DP83869_STRAP_OP_MODE_MASK GENMASK(2, 0) #define DP83869_STRAP_STS1_RESERVED BIT(11) #define DP83869_STRAP_MIRROR_ENABLED BIT(12) /* PHYCTRL bits */ #define DP83869_RX_FIFO_SHIFT 12 #define DP83869_TX_FIFO_SHIFT 14 /* PHY_CTRL lower bytes 0x48 are declared as reserved */ #define DP83869_PHY_CTRL_DEFAULT 0x48 #define DP83869_PHYCR_FIFO_DEPTH_MASK GENMASK(15, 12) #define DP83869_PHYCR_RESERVED_MASK BIT(11) /* IO_MUX_CFG bits */ #define DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL 0x1f #define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX 0x0 #define DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN 0x1f #define DP83869_IO_MUX_CFG_CLK_O_SEL_MASK (0x1f << 8) #define DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT 8 /* CFG3 bits */ #define DP83869_CFG3_PORT_MIRROR_EN BIT(0) /* CFG4 bits */ #define DP83869_INT_OE BIT(7) /* OP MODE */ #define DP83869_OP_MODE_MII BIT(5) #define DP83869_SGMII_RGMII_BRIDGE BIT(6) /* RXFCFG bits*/ #define DP83869_WOL_MAGIC_EN BIT(0) #define DP83869_WOL_PATTERN_EN BIT(1) #define DP83869_WOL_BCAST_EN BIT(2) #define DP83869_WOL_UCAST_EN BIT(4) #define DP83869_WOL_SEC_EN BIT(5) #define DP83869_WOL_ENH_MAC BIT(7) /* CFG2 bits */ #define DP83869_DOWNSHIFT_EN (BIT(8) | BIT(9)) #define DP83869_DOWNSHIFT_ATTEMPT_MASK (BIT(10) | BIT(11)) #define DP83869_DOWNSHIFT_1_COUNT_VAL 0 #define DP83869_DOWNSHIFT_2_COUNT_VAL 1 #define DP83869_DOWNSHIFT_4_COUNT_VAL 2 #define DP83869_DOWNSHIFT_8_COUNT_VAL 3 #define DP83869_DOWNSHIFT_1_COUNT 1 #define DP83869_DOWNSHIFT_2_COUNT 2 #define DP83869_DOWNSHIFT_4_COUNT 4 #define DP83869_DOWNSHIFT_8_COUNT 8 enum { DP83869_PORT_MIRRORING_KEEP, DP83869_PORT_MIRRORING_EN, DP83869_PORT_MIRRORING_DIS, }; struct dp83869_private { int tx_fifo_depth; int rx_fifo_depth; s32 rx_int_delay; s32 tx_int_delay; int io_impedance; int port_mirroring; bool rxctrl_strap_quirk; int clk_output_sel; int mode; }; static int dp83869_read_status(struct phy_device *phydev) { struct dp83869_private *dp83869 = phydev->priv; int ret; ret = genphy_read_status(phydev); if (ret) return ret; if (linkmode_test_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported)) { if (phydev->link) { if (dp83869->mode == DP83869_RGMII_100_BASE) phydev->speed = SPEED_100; } else { phydev->speed = SPEED_UNKNOWN; phydev->duplex = DUPLEX_UNKNOWN; } } return 0; } static int dp83869_ack_interrupt(struct phy_device *phydev) { int err = phy_read(phydev, MII_DP83869_ISR); if (err < 0) return err; return 0; } static int dp83869_config_intr(struct phy_device *phydev) { int micr_status = 0, err; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { err = dp83869_ack_interrupt(phydev); if (err) return err; micr_status = phy_read(phydev, MII_DP83869_MICR); if (micr_status < 0) return micr_status; micr_status |= (MII_DP83869_MICR_AN_ERR_INT_EN | MII_DP83869_MICR_SPEED_CHNG_INT_EN | MII_DP83869_MICR_AUTONEG_COMP_INT_EN | MII_DP83869_MICR_LINK_STS_CHNG_INT_EN | MII_DP83869_MICR_DUP_MODE_CHNG_INT_EN | MII_DP83869_MICR_SLEEP_MODE_CHNG_INT_EN); err = phy_write(phydev, MII_DP83869_MICR, micr_status); } else { err = phy_write(phydev, MII_DP83869_MICR, micr_status); if (err) return err; err = dp83869_ack_interrupt(phydev); } return err; } static irqreturn_t dp83869_handle_interrupt(struct phy_device *phydev) { int irq_status, irq_enabled; irq_status = phy_read(phydev, MII_DP83869_ISR); if (irq_status < 0) { phy_error(phydev); return IRQ_NONE; } irq_enabled = phy_read(phydev, MII_DP83869_MICR); if (irq_enabled < 0) { phy_error(phydev); return IRQ_NONE; } if (!(irq_status & irq_enabled)) return IRQ_NONE; phy_trigger_machine(phydev); return IRQ_HANDLED; } static int dp83869_set_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { struct net_device *ndev = phydev->attached_dev; int val_rxcfg, val_micr; const u8 *mac; int ret; val_rxcfg = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG); if (val_rxcfg < 0) return val_rxcfg; val_micr = phy_read(phydev, MII_DP83869_MICR); if (val_micr < 0) return val_micr; if (wol->wolopts & (WAKE_MAGIC | WAKE_MAGICSECURE | WAKE_UCAST | WAKE_BCAST)) { val_rxcfg |= DP83869_WOL_ENH_MAC; val_micr |= MII_DP83869_MICR_WOL_INT_EN; if (wol->wolopts & WAKE_MAGIC || wol->wolopts & WAKE_MAGICSECURE) { mac = (const u8 *)ndev->dev_addr; if (!is_valid_ether_addr(mac)) return -EINVAL; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFPMD1, mac[1] << 8 | mac[0]); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFPMD2, mac[3] << 8 | mac[2]); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFPMD3, mac[5] << 8 | mac[4]); if (ret) return ret; val_rxcfg |= DP83869_WOL_MAGIC_EN; } else { val_rxcfg &= ~DP83869_WOL_MAGIC_EN; } if (wol->wolopts & WAKE_MAGICSECURE) { ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP1, (wol->sopass[1] << 8) | wol->sopass[0]); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP2, (wol->sopass[3] << 8) | wol->sopass[2]); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP3, (wol->sopass[5] << 8) | wol->sopass[4]); if (ret) return ret; val_rxcfg |= DP83869_WOL_SEC_EN; } else { val_rxcfg &= ~DP83869_WOL_SEC_EN; } if (wol->wolopts & WAKE_UCAST) val_rxcfg |= DP83869_WOL_UCAST_EN; else val_rxcfg &= ~DP83869_WOL_UCAST_EN; if (wol->wolopts & WAKE_BCAST) val_rxcfg |= DP83869_WOL_BCAST_EN; else val_rxcfg &= ~DP83869_WOL_BCAST_EN; } else { val_rxcfg &= ~DP83869_WOL_ENH_MAC; val_micr &= ~MII_DP83869_MICR_WOL_INT_EN; } ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG, val_rxcfg); if (ret) return ret; return phy_write(phydev, MII_DP83869_MICR, val_micr); } static void dp83869_get_wol(struct phy_device *phydev, struct ethtool_wolinfo *wol) { int value, sopass_val; wol->supported = (WAKE_UCAST | WAKE_BCAST | WAKE_MAGIC | WAKE_MAGICSECURE); wol->wolopts = 0; value = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFCFG); if (value < 0) { phydev_err(phydev, "Failed to read RX CFG\n"); return; } if (value & DP83869_WOL_UCAST_EN) wol->wolopts |= WAKE_UCAST; if (value & DP83869_WOL_BCAST_EN) wol->wolopts |= WAKE_BCAST; if (value & DP83869_WOL_MAGIC_EN) wol->wolopts |= WAKE_MAGIC; if (value & DP83869_WOL_SEC_EN) { sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP1); if (sopass_val < 0) { phydev_err(phydev, "Failed to read RX SOP 1\n"); return; } wol->sopass[0] = (sopass_val & 0xff); wol->sopass[1] = (sopass_val >> 8); sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP2); if (sopass_val < 0) { phydev_err(phydev, "Failed to read RX SOP 2\n"); return; } wol->sopass[2] = (sopass_val & 0xff); wol->sopass[3] = (sopass_val >> 8); sopass_val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RXFSOP3); if (sopass_val < 0) { phydev_err(phydev, "Failed to read RX SOP 3\n"); return; } wol->sopass[4] = (sopass_val & 0xff); wol->sopass[5] = (sopass_val >> 8); wol->wolopts |= WAKE_MAGICSECURE; } if (!(value & DP83869_WOL_ENH_MAC)) wol->wolopts = 0; } static int dp83869_get_downshift(struct phy_device *phydev, u8 *data) { int val, cnt, enable, count; val = phy_read(phydev, DP83869_CFG2); if (val < 0) return val; enable = FIELD_GET(DP83869_DOWNSHIFT_EN, val); cnt = FIELD_GET(DP83869_DOWNSHIFT_ATTEMPT_MASK, val); switch (cnt) { case DP83869_DOWNSHIFT_1_COUNT_VAL: count = DP83869_DOWNSHIFT_1_COUNT; break; case DP83869_DOWNSHIFT_2_COUNT_VAL: count = DP83869_DOWNSHIFT_2_COUNT; break; case DP83869_DOWNSHIFT_4_COUNT_VAL: count = DP83869_DOWNSHIFT_4_COUNT; break; case DP83869_DOWNSHIFT_8_COUNT_VAL: count = DP83869_DOWNSHIFT_8_COUNT; break; default: return -EINVAL; } *data = enable ? count : DOWNSHIFT_DEV_DISABLE; return 0; } static int dp83869_set_downshift(struct phy_device *phydev, u8 cnt) { int val, count; if (cnt > DP83869_DOWNSHIFT_8_COUNT) return -EINVAL; if (!cnt) return phy_clear_bits(phydev, DP83869_CFG2, DP83869_DOWNSHIFT_EN); switch (cnt) { case DP83869_DOWNSHIFT_1_COUNT: count = DP83869_DOWNSHIFT_1_COUNT_VAL; break; case DP83869_DOWNSHIFT_2_COUNT: count = DP83869_DOWNSHIFT_2_COUNT_VAL; break; case DP83869_DOWNSHIFT_4_COUNT: count = DP83869_DOWNSHIFT_4_COUNT_VAL; break; case DP83869_DOWNSHIFT_8_COUNT: count = DP83869_DOWNSHIFT_8_COUNT_VAL; break; default: phydev_err(phydev, "Downshift count must be 1, 2, 4 or 8\n"); return -EINVAL; } val = DP83869_DOWNSHIFT_EN; val |= FIELD_PREP(DP83869_DOWNSHIFT_ATTEMPT_MASK, count); return phy_modify(phydev, DP83869_CFG2, DP83869_DOWNSHIFT_EN | DP83869_DOWNSHIFT_ATTEMPT_MASK, val); } static int dp83869_get_tunable(struct phy_device *phydev, struct ethtool_tunable *tuna, void *data) { switch (tuna->id) { case ETHTOOL_PHY_DOWNSHIFT: return dp83869_get_downshift(phydev, data); default: return -EOPNOTSUPP; } } static int dp83869_set_tunable(struct phy_device *phydev, struct ethtool_tunable *tuna, const void *data) { switch (tuna->id) { case ETHTOOL_PHY_DOWNSHIFT: return dp83869_set_downshift(phydev, *(const u8 *)data); default: return -EOPNOTSUPP; } } static int dp83869_config_port_mirroring(struct phy_device *phydev) { struct dp83869_private *dp83869 = phydev->priv; if (dp83869->port_mirroring == DP83869_PORT_MIRRORING_EN) return phy_set_bits_mmd(phydev, DP83869_DEVADDR, DP83869_GEN_CFG3, DP83869_CFG3_PORT_MIRROR_EN); else return phy_clear_bits_mmd(phydev, DP83869_DEVADDR, DP83869_GEN_CFG3, DP83869_CFG3_PORT_MIRROR_EN); } static int dp83869_set_strapped_mode(struct phy_device *phydev) { struct dp83869_private *dp83869 = phydev->priv; int val; val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1); if (val < 0) return val; dp83869->mode = val & DP83869_STRAP_OP_MODE_MASK; return 0; } #if IS_ENABLED(CONFIG_OF_MDIO) static const int dp83869_internal_delay[] = {250, 500, 750, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000, 3250, 3500, 3750, 4000}; static int dp83869_of_init(struct phy_device *phydev) { struct dp83869_private *dp83869 = phydev->priv; struct device *dev = &phydev->mdio.dev; struct device_node *of_node = dev->of_node; int delay_size = ARRAY_SIZE(dp83869_internal_delay); int ret; if (!of_node) return -ENODEV; dp83869->io_impedance = -EINVAL; /* Optional configuration */ ret = of_property_read_u32(of_node, "ti,clk-output-sel", &dp83869->clk_output_sel); if (ret || dp83869->clk_output_sel > DP83869_CLK_O_SEL_REF_CLK) dp83869->clk_output_sel = DP83869_CLK_O_SEL_REF_CLK; ret = of_property_read_u32(of_node, "ti,op-mode", &dp83869->mode); if (ret == 0) { if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET || dp83869->mode > DP83869_SGMII_COPPER_ETHERNET) return -EINVAL; } else { ret = dp83869_set_strapped_mode(phydev); if (ret) return ret; } if (of_property_read_bool(of_node, "ti,max-output-impedance")) dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MAX; else if (of_property_read_bool(of_node, "ti,min-output-impedance")) dp83869->io_impedance = DP83869_IO_MUX_CFG_IO_IMPEDANCE_MIN; if (of_property_read_bool(of_node, "enet-phy-lane-swap")) { dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN; } else { /* If the lane swap is not in the DT then check the straps */ ret = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_STRAP_STS1); if (ret < 0) return ret; if (ret & DP83869_STRAP_MIRROR_ENABLED) dp83869->port_mirroring = DP83869_PORT_MIRRORING_EN; else dp83869->port_mirroring = DP83869_PORT_MIRRORING_DIS; ret = 0; } if (of_property_read_u32(of_node, "rx-fifo-depth", &dp83869->rx_fifo_depth)) dp83869->rx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB; if (of_property_read_u32(of_node, "tx-fifo-depth", &dp83869->tx_fifo_depth)) dp83869->tx_fifo_depth = DP83869_PHYCR_FIFO_DEPTH_4_B_NIB; dp83869->rx_int_delay = phy_get_internal_delay(phydev, dev, &dp83869_internal_delay[0], delay_size, true); if (dp83869->rx_int_delay < 0) dp83869->rx_int_delay = dp83869_internal_delay[DP83869_CLK_DELAY_DEF]; dp83869->tx_int_delay = phy_get_internal_delay(phydev, dev, &dp83869_internal_delay[0], delay_size, false); if (dp83869->tx_int_delay < 0) dp83869->tx_int_delay = dp83869_internal_delay[DP83869_CLK_DELAY_DEF]; return ret; } #else static int dp83869_of_init(struct phy_device *phydev) { return dp83869_set_strapped_mode(phydev); } #endif /* CONFIG_OF_MDIO */ static int dp83869_configure_rgmii(struct phy_device *phydev, struct dp83869_private *dp83869) { int ret = 0, val; if (phy_interface_is_rgmii(phydev)) { val = phy_read(phydev, MII_DP83869_PHYCTRL); if (val < 0) return val; val &= ~DP83869_PHYCR_FIFO_DEPTH_MASK; val |= (dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT); val |= (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT); ret = phy_write(phydev, MII_DP83869_PHYCTRL, val); if (ret) return ret; } if (dp83869->io_impedance >= 0) ret = phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG, DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL, dp83869->io_impedance & DP83869_IO_MUX_CFG_IO_IMPEDANCE_CTRL); return ret; } static int dp83869_configure_fiber(struct phy_device *phydev, struct dp83869_private *dp83869) { int bmcr; int ret; /* Only allow advertising what this PHY supports */ linkmode_and(phydev->advertising, phydev->advertising, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_FIBRE_BIT, phydev->supported); linkmode_set_bit(ADVERTISED_FIBRE, phydev->advertising); if (dp83869->mode == DP83869_RGMII_1000_BASE) { linkmode_set_bit(ETHTOOL_LINK_MODE_1000baseX_Full_BIT, phydev->supported); } else { linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Full_BIT, phydev->supported); linkmode_set_bit(ETHTOOL_LINK_MODE_100baseFX_Half_BIT, phydev->supported); /* Auto neg is not supported in 100base FX mode */ bmcr = phy_read(phydev, MII_BMCR); if (bmcr < 0) return bmcr; phydev->autoneg = AUTONEG_DISABLE; linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->supported); linkmode_clear_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, phydev->advertising); if (bmcr & BMCR_ANENABLE) { ret = phy_modify(phydev, MII_BMCR, BMCR_ANENABLE, 0); if (ret < 0) return ret; } } /* Update advertising from supported */ linkmode_or(phydev->advertising, phydev->advertising, phydev->supported); return 0; } static int dp83869_configure_mode(struct phy_device *phydev, struct dp83869_private *dp83869) { int phy_ctrl_val; int ret; if (dp83869->mode < DP83869_RGMII_COPPER_ETHERNET || dp83869->mode > DP83869_SGMII_COPPER_ETHERNET) return -EINVAL; /* Below init sequence for each operational mode is defined in * section 9.4.8 of the datasheet. */ ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, dp83869->mode); if (ret) return ret; ret = phy_write(phydev, MII_BMCR, MII_DP83869_BMCR_DEFAULT); if (ret) return ret; phy_ctrl_val = (dp83869->rx_fifo_depth << DP83869_RX_FIFO_SHIFT | dp83869->tx_fifo_depth << DP83869_TX_FIFO_SHIFT | DP83869_PHY_CTRL_DEFAULT); switch (dp83869->mode) { case DP83869_RGMII_COPPER_ETHERNET: ret = phy_write(phydev, MII_DP83869_PHYCTRL, phy_ctrl_val); if (ret) return ret; ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT); if (ret) return ret; ret = dp83869_configure_rgmii(phydev, dp83869); if (ret) return ret; break; case DP83869_RGMII_SGMII_BRIDGE: ret = phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_OP_MODE, DP83869_SGMII_RGMII_BRIDGE, DP83869_SGMII_RGMII_BRIDGE); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); if (ret) return ret; break; case DP83869_1000M_MEDIA_CONVERT: ret = phy_write(phydev, MII_DP83869_PHYCTRL, phy_ctrl_val); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); if (ret) return ret; break; case DP83869_100M_MEDIA_CONVERT: ret = phy_write(phydev, MII_DP83869_PHYCTRL, phy_ctrl_val); if (ret) return ret; break; case DP83869_SGMII_COPPER_ETHERNET: ret = phy_write(phydev, MII_DP83869_PHYCTRL, phy_ctrl_val); if (ret) return ret; ret = phy_write(phydev, MII_CTRL1000, DP83869_CFG1_DEFAULT); if (ret) return ret; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_FX_CTRL, DP83869_FX_CTRL_DEFAULT); if (ret) return ret; break; case DP83869_RGMII_1000_BASE: case DP83869_RGMII_100_BASE: ret = dp83869_configure_fiber(phydev, dp83869); break; default: return -EINVAL; } return ret; } static int dp83869_config_init(struct phy_device *phydev) { struct dp83869_private *dp83869 = phydev->priv; int ret, val; /* Force speed optimization for the PHY even if it strapped */ ret = phy_modify(phydev, DP83869_CFG2, DP83869_DOWNSHIFT_EN, DP83869_DOWNSHIFT_EN); if (ret) return ret; ret = dp83869_configure_mode(phydev, dp83869); if (ret) return ret; /* Enable Interrupt output INT_OE in CFG4 register */ if (phy_interrupt_is_valid(phydev)) { val = phy_read(phydev, DP83869_CFG4); val |= DP83869_INT_OE; phy_write(phydev, DP83869_CFG4, val); } if (dp83869->port_mirroring != DP83869_PORT_MIRRORING_KEEP) dp83869_config_port_mirroring(phydev); /* Clock output selection if muxing property is set */ if (dp83869->clk_output_sel != DP83869_CLK_O_SEL_REF_CLK) ret = phy_modify_mmd(phydev, DP83869_DEVADDR, DP83869_IO_MUX_CFG, DP83869_IO_MUX_CFG_CLK_O_SEL_MASK, dp83869->clk_output_sel << DP83869_IO_MUX_CFG_CLK_O_SEL_SHIFT); if (phy_interface_is_rgmii(phydev)) { ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIIDCTL, dp83869->rx_int_delay | dp83869->tx_int_delay << DP83869_RGMII_CLK_DELAY_SHIFT); if (ret) return ret; val = phy_read_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL); val |= (DP83869_RGMII_TX_CLK_DELAY_EN | DP83869_RGMII_RX_CLK_DELAY_EN); if (phydev->interface == PHY_INTERFACE_MODE_RGMII_ID) val &= ~(DP83869_RGMII_TX_CLK_DELAY_EN | DP83869_RGMII_RX_CLK_DELAY_EN); if (phydev->interface == PHY_INTERFACE_MODE_RGMII_TXID) val &= ~DP83869_RGMII_TX_CLK_DELAY_EN; if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) val &= ~DP83869_RGMII_RX_CLK_DELAY_EN; ret = phy_write_mmd(phydev, DP83869_DEVADDR, DP83869_RGMIICTL, val); } return ret; } static int dp83869_probe(struct phy_device *phydev) { struct dp83869_private *dp83869; int ret; dp83869 = devm_kzalloc(&phydev->mdio.dev, sizeof(*dp83869), GFP_KERNEL); if (!dp83869) return -ENOMEM; phydev->priv = dp83869; ret = dp83869_of_init(phydev); if (ret) return ret; if (dp83869->mode == DP83869_RGMII_100_BASE || dp83869->mode == DP83869_RGMII_1000_BASE) phydev->port = PORT_FIBRE; return dp83869_config_init(phydev); } static int dp83869_phy_reset(struct phy_device *phydev) { int ret; ret = phy_write(phydev, DP83869_CTRL, DP83869_SW_RESET); if (ret < 0) return ret; usleep_range(10, 20); /* Global sw reset sets all registers to default. * Need to set the registers in the PHY to the right config. */ return dp83869_config_init(phydev); } static struct phy_driver dp83869_driver[] = { { PHY_ID_MATCH_MODEL(DP83869_PHY_ID), .name = "TI DP83869", .probe = dp83869_probe, .config_init = dp83869_config_init, .soft_reset = dp83869_phy_reset, /* IRQ related */ .config_intr = dp83869_config_intr, .handle_interrupt = dp83869_handle_interrupt, .read_status = dp83869_read_status, .get_tunable = dp83869_get_tunable, .set_tunable = dp83869_set_tunable, .get_wol = dp83869_get_wol, .set_wol = dp83869_set_wol, .suspend = genphy_suspend, .resume = genphy_resume, }, }; module_phy_driver(dp83869_driver); static struct mdio_device_id __maybe_unused dp83869_tbl[] = { { PHY_ID_MATCH_MODEL(DP83869_PHY_ID) }, { } }; MODULE_DEVICE_TABLE(mdio, dp83869_tbl); MODULE_DESCRIPTION("Texas Instruments DP83869 PHY driver"); MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com"); MODULE_LICENSE("GPL v2");