/* * drivers/net/phy/broadcom.c * * Broadcom BCM5411, BCM5421 and BCM5461 Gigabit Ethernet * transceivers. * * Copyright (c) 2006 Maciej W. Rozycki * * Inspired by code written by Amy Fong. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #include "bcm-phy-lib.h" #include #include #include #define BRCM_PHY_MODEL(phydev) \ ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask) #define BRCM_PHY_REV(phydev) \ ((phydev)->drv->phy_id & ~((phydev)->drv->phy_id_mask)) MODULE_DESCRIPTION("Broadcom PHY driver"); MODULE_AUTHOR("Maciej W. Rozycki"); MODULE_LICENSE("GPL"); static int bcm54xx_auxctl_read(struct phy_device *phydev, u16 regnum) { /* The register must be written to both the Shadow Register Select and * the Shadow Read Register Selector */ phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | regnum << MII_BCM54XX_AUXCTL_SHDWSEL_READ_SHIFT); return phy_read(phydev, MII_BCM54XX_AUX_CTL); } static int bcm54xx_auxctl_write(struct phy_device *phydev, u16 regnum, u16 val) { return phy_write(phydev, MII_BCM54XX_AUX_CTL, regnum | val); } /* Needs SMDSP clock enabled via bcm54xx_phydsp_config() */ static int bcm50610_a0_workaround(struct phy_device *phydev) { int err; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH0, MII_BCM54XX_EXP_AADJ1CH0_SWP_ABCD_OEN | MII_BCM54XX_EXP_AADJ1CH0_SWSEL_THPF); if (err < 0) return err; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_AADJ1CH3, MII_BCM54XX_EXP_AADJ1CH3_ADCCKADJ); if (err < 0) return err; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75, MII_BCM54XX_EXP_EXP75_VDACCTRL); if (err < 0) return err; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP96, MII_BCM54XX_EXP_EXP96_MYST); if (err < 0) return err; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP97, MII_BCM54XX_EXP_EXP97_MYST); return err; } static int bcm54xx_phydsp_config(struct phy_device *phydev) { int err, err2; /* Enable the SMDSP clock */ err = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, MII_BCM54XX_AUXCTL_ACTL_SMDSP_ENA | MII_BCM54XX_AUXCTL_ACTL_TX_6DB); if (err < 0) return err; if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) { /* Clear bit 9 to fix a phy interop issue. */ err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP08, MII_BCM54XX_EXP_EXP08_RJCT_2MHZ); if (err < 0) goto error; if (phydev->drv->phy_id == PHY_ID_BCM50610) { err = bcm50610_a0_workaround(phydev); if (err < 0) goto error; } } if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) { int val; val = bcm_phy_read_exp(phydev, MII_BCM54XX_EXP_EXP75); if (val < 0) goto error; val |= MII_BCM54XX_EXP_EXP75_CM_OSC; err = bcm_phy_write_exp(phydev, MII_BCM54XX_EXP_EXP75, val); } error: /* Disable the SMDSP clock */ err2 = bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, MII_BCM54XX_AUXCTL_ACTL_TX_6DB); /* Return the first error reported. */ return err ? err : err2; } static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev) { u32 orig; int val; bool clk125en = true; /* Abort if we are using an untested phy. */ if (BRCM_PHY_MODEL(phydev) != PHY_ID_BCM57780 && BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610 && BRCM_PHY_MODEL(phydev) != PHY_ID_BCM50610M) return; val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3); if (val < 0) return; orig = val; if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) && BRCM_PHY_REV(phydev) >= 0x3) { /* * Here, bit 0 _disables_ CLK125 when set. * This bit is set by default. */ clk125en = false; } else { if (phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) { /* Here, bit 0 _enables_ CLK125 when set */ val &= ~BCM54XX_SHD_SCR3_DEF_CLK125; clk125en = false; } } if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS; else val |= BCM54XX_SHD_SCR3_DLLAPD_DIS; if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) val |= BCM54XX_SHD_SCR3_TRDDAPD; if (orig != val) bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val); val = bcm_phy_read_shadow(phydev, BCM54XX_SHD_APD); if (val < 0) return; orig = val; if (!clk125en || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) val |= BCM54XX_SHD_APD_EN; else val &= ~BCM54XX_SHD_APD_EN; if (orig != val) bcm_phy_write_shadow(phydev, BCM54XX_SHD_APD, val); } static int bcm54xx_config_init(struct phy_device *phydev) { int reg, err; reg = phy_read(phydev, MII_BCM54XX_ECR); if (reg < 0) return reg; /* Mask interrupts globally. */ reg |= MII_BCM54XX_ECR_IM; err = phy_write(phydev, MII_BCM54XX_ECR, reg); if (err < 0) return err; /* Unmask events we are interested in. */ reg = ~(MII_BCM54XX_INT_DUPLEX | MII_BCM54XX_INT_SPEED | MII_BCM54XX_INT_LINK); err = phy_write(phydev, MII_BCM54XX_IMR, reg); if (err < 0) return err; if ((BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610 || BRCM_PHY_MODEL(phydev) == PHY_ID_BCM50610M) && (phydev->dev_flags & PHY_BRCM_CLEAR_RGMII_MODE)) bcm_phy_write_shadow(phydev, BCM54XX_SHD_RGMII_MODE, 0); if ((phydev->dev_flags & PHY_BRCM_RX_REFCLK_UNUSED) || (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY) || (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE)) bcm54xx_adjust_rxrefclk(phydev); bcm54xx_phydsp_config(phydev); return 0; } static int bcm5482_config_init(struct phy_device *phydev) { int err, reg; err = bcm54xx_config_init(phydev); if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) { /* * Enable secondary SerDes and its use as an LED source */ reg = bcm_phy_read_shadow(phydev, BCM5482_SHD_SSD); bcm_phy_write_shadow(phydev, BCM5482_SHD_SSD, reg | BCM5482_SHD_SSD_LEDM | BCM5482_SHD_SSD_EN); /* * Enable SGMII slave mode and auto-detection */ reg = BCM5482_SSD_SGMII_SLAVE | MII_BCM54XX_EXP_SEL_SSD; err = bcm_phy_read_exp(phydev, reg); if (err < 0) return err; err = bcm_phy_write_exp(phydev, reg, err | BCM5482_SSD_SGMII_SLAVE_EN | BCM5482_SSD_SGMII_SLAVE_AD); if (err < 0) return err; /* * Disable secondary SerDes powerdown */ reg = BCM5482_SSD_1000BX_CTL | MII_BCM54XX_EXP_SEL_SSD; err = bcm_phy_read_exp(phydev, reg); if (err < 0) return err; err = bcm_phy_write_exp(phydev, reg, err & ~BCM5482_SSD_1000BX_CTL_PWRDOWN); if (err < 0) return err; /* * Select 1000BASE-X register set (primary SerDes) */ reg = bcm_phy_read_shadow(phydev, BCM5482_SHD_MODE); bcm_phy_write_shadow(phydev, BCM5482_SHD_MODE, reg | BCM5482_SHD_MODE_1000BX); /* * LED1=ACTIVITYLED, LED3=LINKSPD[2] * (Use LED1 as secondary SerDes ACTIVITY LED) */ bcm_phy_write_shadow(phydev, BCM5482_SHD_LEDS1, BCM5482_SHD_LEDS1_LED1(BCM_LED_SRC_ACTIVITYLED) | BCM5482_SHD_LEDS1_LED3(BCM_LED_SRC_LINKSPD2)); /* * Auto-negotiation doesn't seem to work quite right * in this mode, so we disable it and force it to the * right speed/duplex setting. Only 'link status' * is important. */ phydev->autoneg = AUTONEG_DISABLE; phydev->speed = SPEED_1000; phydev->duplex = DUPLEX_FULL; } return err; } static int bcm5482_read_status(struct phy_device *phydev) { int err; err = genphy_read_status(phydev); if (phydev->dev_flags & PHY_BCM_FLAGS_MODE_1000BX) { /* * Only link status matters for 1000Base-X mode, so force * 1000 Mbit/s full-duplex status */ if (phydev->link) { phydev->speed = SPEED_1000; phydev->duplex = DUPLEX_FULL; } } return err; } static int bcm5481_config_aneg(struct phy_device *phydev) { int ret; /* Aneg firsly. */ ret = genphy_config_aneg(phydev); /* Then we can set up the delay. */ if (phydev->interface == PHY_INTERFACE_MODE_RGMII_RXID) { u16 reg; /* * There is no BCM5481 specification available, so down * here is everything we know about "register 0x18". This * at least helps BCM5481 to successfully receive packets * on MPC8360E-RDK board. Peter Barada * says: "This sets delay between the RXD and RXC signals * instead of using trace lengths to achieve timing". */ /* Set RDX clk delay. */ reg = 0x7 | (0x7 << 12); phy_write(phydev, 0x18, reg); reg = phy_read(phydev, 0x18); /* Set RDX-RXC skew. */ reg |= (1 << 8); /* Write bits 14:0. */ reg |= (1 << 15); phy_write(phydev, 0x18, reg); } return ret; } static int bcm54612e_config_aneg(struct phy_device *phydev) { int ret; /* First, auto-negotiate. */ ret = genphy_config_aneg(phydev); /* Clear TX internal delay unless requested. */ if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) && (phydev->interface != PHY_INTERFACE_MODE_RGMII_TXID)) { /* Disable TXD to GTXCLK clock delay (default set) */ /* Bit 9 is the only field in shadow register 00011 */ bcm_phy_write_shadow(phydev, 0x03, 0); } /* Clear RX internal delay unless requested. */ if ((phydev->interface != PHY_INTERFACE_MODE_RGMII_ID) && (phydev->interface != PHY_INTERFACE_MODE_RGMII_RXID)) { u16 reg; /* Errata: reads require filling in the write selector field */ bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC, MII_BCM54XX_AUXCTL_MISC_RDSEL_MISC); reg = phy_read(phydev, MII_BCM54XX_AUX_CTL); /* Disable RXD to RXC delay (default set) */ reg &= ~MII_BCM54XX_AUXCTL_MISC_RXD_RXC_SKEW; /* Clear shadow selector field */ reg &= ~MII_BCM54XX_AUXCTL_SHDWSEL_MASK; bcm54xx_auxctl_write(phydev, MII_BCM54XX_AUXCTL_SHDWSEL_MISC, MII_BCM54XX_AUXCTL_MISC_WREN | reg); } return ret; } static int brcm_phy_setbits(struct phy_device *phydev, int reg, int set) { int val; val = phy_read(phydev, reg); if (val < 0) return val; return phy_write(phydev, reg, val | set); } static int brcm_fet_config_init(struct phy_device *phydev) { int reg, err, err2, brcmtest; /* Reset the PHY to bring it to a known state. */ err = phy_write(phydev, MII_BMCR, BMCR_RESET); if (err < 0) return err; reg = phy_read(phydev, MII_BRCM_FET_INTREG); if (reg < 0) return reg; /* Unmask events we are interested in and mask interrupts globally. */ reg = MII_BRCM_FET_IR_DUPLEX_EN | MII_BRCM_FET_IR_SPEED_EN | MII_BRCM_FET_IR_LINK_EN | MII_BRCM_FET_IR_ENABLE | MII_BRCM_FET_IR_MASK; err = phy_write(phydev, MII_BRCM_FET_INTREG, reg); if (err < 0) return err; /* Enable shadow register access */ brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST); if (brcmtest < 0) return brcmtest; reg = brcmtest | MII_BRCM_FET_BT_SRE; err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); if (err < 0) return err; /* Set the LED mode */ reg = phy_read(phydev, MII_BRCM_FET_SHDW_AUXMODE4); if (reg < 0) { err = reg; goto done; } reg &= ~MII_BRCM_FET_SHDW_AM4_LED_MASK; reg |= MII_BRCM_FET_SHDW_AM4_LED_MODE1; err = phy_write(phydev, MII_BRCM_FET_SHDW_AUXMODE4, reg); if (err < 0) goto done; /* Enable auto MDIX */ err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_MISCCTRL, MII_BRCM_FET_SHDW_MC_FAME); if (err < 0) goto done; if (phydev->dev_flags & PHY_BRCM_AUTO_PWRDWN_ENABLE) { /* Enable auto power down */ err = brcm_phy_setbits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2, MII_BRCM_FET_SHDW_AS2_APDE); } done: /* Disable shadow register access */ err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); if (!err) err = err2; return err; } static int brcm_fet_ack_interrupt(struct phy_device *phydev) { int reg; /* Clear pending interrupts. */ reg = phy_read(phydev, MII_BRCM_FET_INTREG); if (reg < 0) return reg; return 0; } static int brcm_fet_config_intr(struct phy_device *phydev) { int reg, err; reg = phy_read(phydev, MII_BRCM_FET_INTREG); if (reg < 0) return reg; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) reg &= ~MII_BRCM_FET_IR_MASK; else reg |= MII_BRCM_FET_IR_MASK; err = phy_write(phydev, MII_BRCM_FET_INTREG, reg); return err; } static struct phy_driver broadcom_drivers[] = { { .phy_id = PHY_ID_BCM5411, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5411", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM5421, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5421", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM5461, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5461", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM54612E, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM54612E", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = bcm54612e_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM54616S, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM54616S", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM5464, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5464", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM5481, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5481", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = bcm5481_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM5482, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5482", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm5482_config_init, .config_aneg = genphy_config_aneg, .read_status = bcm5482_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM50610, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM50610", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM50610M, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM50610M", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCM57780, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM57780", .features = PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = bcm54xx_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = bcm_phy_ack_intr, .config_intr = bcm_phy_config_intr, }, { .phy_id = PHY_ID_BCMAC131, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCMAC131", .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = brcm_fet_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = brcm_fet_ack_interrupt, .config_intr = brcm_fet_config_intr, }, { .phy_id = PHY_ID_BCM5241, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM5241", .features = PHY_BASIC_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause, .flags = PHY_HAS_MAGICANEG | PHY_HAS_INTERRUPT, .config_init = brcm_fet_config_init, .config_aneg = genphy_config_aneg, .read_status = genphy_read_status, .ack_interrupt = brcm_fet_ack_interrupt, .config_intr = brcm_fet_config_intr, } }; module_phy_driver(broadcom_drivers); static struct mdio_device_id __maybe_unused broadcom_tbl[] = { { PHY_ID_BCM5411, 0xfffffff0 }, { PHY_ID_BCM5421, 0xfffffff0 }, { PHY_ID_BCM5461, 0xfffffff0 }, { PHY_ID_BCM54612E, 0xfffffff0 }, { PHY_ID_BCM54616S, 0xfffffff0 }, { PHY_ID_BCM5464, 0xfffffff0 }, { PHY_ID_BCM5481, 0xfffffff0 }, { PHY_ID_BCM5482, 0xfffffff0 }, { PHY_ID_BCM50610, 0xfffffff0 }, { PHY_ID_BCM50610M, 0xfffffff0 }, { PHY_ID_BCM57780, 0xfffffff0 }, { PHY_ID_BCMAC131, 0xfffffff0 }, { PHY_ID_BCM5241, 0xfffffff0 }, { } }; MODULE_DEVICE_TABLE(mdio, broadcom_tbl);