Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 962 insertions, 0 deletions

diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c
new file mode 100644
index 0000000000..97638ba7ae
--- /dev/null
+++ b/drivers/net/phy/bcm7xxx.c
@@ -0,0 +1,962 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Broadcom BCM7xxx internal transceivers support.
+ *
+ * Copyright (C) 2014-2017 Broadcom
+ */
+
+#include <linux/module.h>
+#include <linux/phy.h>
+#include <linux/delay.h>
+#include "bcm-phy-lib.h"
+#include <linux/bitops.h>
+#include <linux/brcmphy.h>
+#include <linux/clk.h>
+#include <linux/mdio.h>
+
+/* Broadcom BCM7xxx internal PHY registers */
+
+/* EPHY only register definitions */
+#define MII_BCM7XXX_100TX_AUX_CTL	0x10
+#define MII_BCM7XXX_100TX_FALSE_CAR	0x13
+#define MII_BCM7XXX_100TX_DISC		0x14
+#define MII_BCM7XXX_AUX_MODE		0x1d
+#define  MII_BCM7XXX_64CLK_MDIO		BIT(12)
+#define MII_BCM7XXX_TEST		0x1f
+#define  MII_BCM7XXX_SHD_MODE_2		BIT(2)
+#define MII_BCM7XXX_SHD_2_ADDR_CTRL	0xe
+#define MII_BCM7XXX_SHD_2_CTRL_STAT	0xf
+#define MII_BCM7XXX_SHD_2_BIAS_TRIM	0x1a
+#define MII_BCM7XXX_SHD_3_PCS_CTRL	0x0
+#define MII_BCM7XXX_SHD_3_PCS_STATUS	0x1
+#define MII_BCM7XXX_SHD_3_EEE_CAP	0x2
+#define MII_BCM7XXX_SHD_3_AN_EEE_ADV	0x3
+#define MII_BCM7XXX_SHD_3_EEE_LP	0x4
+#define MII_BCM7XXX_SHD_3_EEE_WK_ERR	0x5
+#define MII_BCM7XXX_SHD_3_PCS_CTRL_2	0x6
+#define  MII_BCM7XXX_PCS_CTRL_2_DEF	0x4400
+#define MII_BCM7XXX_SHD_3_AN_STAT	0xb
+#define  MII_BCM7XXX_AN_NULL_MSG_EN	BIT(0)
+#define  MII_BCM7XXX_AN_EEE_EN		BIT(1)
+#define MII_BCM7XXX_SHD_3_EEE_THRESH	0xe
+#define  MII_BCM7XXX_EEE_THRESH_DEF	0x50
+#define MII_BCM7XXX_SHD_3_TL4		0x23
+#define  MII_BCM7XXX_TL4_RST_MSK	(BIT(2) | BIT(1))
+
+struct bcm7xxx_phy_priv {
+	u64	*stats;
+};
+
+static int bcm7xxx_28nm_d0_afe_config_init(struct phy_device *phydev)
+{
+	/* AFE_RXCONFIG_0 */
+	bcm_phy_write_misc(phydev, AFE_RXCONFIG_0, 0xeb15);
+
+	/* AFE_RXCONFIG_1 */
+	bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f);
+
+	/* AFE_RXCONFIG_2, set rCal offset for HT=0 code and LT=-2 code */
+	bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0x2003);
+
+	/* AFE_RX_LP_COUNTER, set RX bandwidth to maximum */
+	bcm_phy_write_misc(phydev, AFE_RX_LP_COUNTER, 0x7fc0);
+
+	/* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */
+	bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431);
+
+	/* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */
+	bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da);
+
+	/* AFE_VDAC_OTHERS_0, set 1000BT Cidac=010 for all ports */
+	bcm_phy_write_misc(phydev, AFE_VDAC_OTHERS_0, 0xa020);
+
+	/* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal
+	 * offset for HT=0 code
+	 */
+	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3);
+
+	/* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */
+	phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010);
+
+	/* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */
+	bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b);
+
+	/* Reset R_CAL/RC_CAL engine */
+	bcm_phy_r_rc_cal_reset(phydev);
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_e0_plus_afe_config_init(struct phy_device *phydev)
+{
+	/* AFE_RXCONFIG_1, provide more margin for INL/DNL measurement */
+	bcm_phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f);
+
+	/* AFE_TX_CONFIG, set 100BT Cfeed=011 to improve rise/fall time */
+	bcm_phy_write_misc(phydev, AFE_TX_CONFIG, 0x431);
+
+	/* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */
+	bcm_phy_write_misc(phydev, AFE_VDCA_ICTRL_0, 0xa7da);
+
+	/* AFE_HPF_TRIM_OTHERS, set 100Tx/10BT to -4.5% swing and set rCal
+	 * offset for HT=0 code
+	 */
+	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x00e3);
+
+	/* CORE_BASE1E, force trim to overwrite and set I_ext trim to 0000 */
+	phy_write(phydev, MII_BRCM_CORE_BASE1E, 0x0010);
+
+	/* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */
+	bcm_phy_write_misc(phydev, DSP_TAP10, 0x011b);
+
+	/* Reset R_CAL/RC_CAL engine */
+	bcm_phy_r_rc_cal_reset(phydev);
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_a0_patch_afe_config_init(struct phy_device *phydev)
+{
+	/* +1 RC_CAL codes for RL centering for both LT and HT conditions */
+	bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0xd003);
+
+	/* Cut master bias current by 2% to compensate for RC_CAL offset */
+	bcm_phy_write_misc(phydev, DSP_TAP10, 0x791b);
+
+	/* Improve hybrid leakage */
+	bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x10e3);
+
+	/* Change rx_on_tune 8 to 0xf */
+	bcm_phy_write_misc(phydev, 0x21, 0x2, 0x87f6);
+
+	/* Change 100Tx EEE bandwidth */
+	bcm_phy_write_misc(phydev, 0x22, 0x2, 0x017d);
+
+	/* Enable ffe zero detection for Vitesse interoperability */
+	bcm_phy_write_misc(phydev, 0x26, 0x2, 0x0015);
+
+	bcm_phy_r_rc_cal_reset(phydev);
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
+{
+	u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags);
+	u8 patch = PHY_BRCM_7XXX_PATCH(phydev->dev_flags);
+	u8 count;
+	int ret = 0;
+
+	/* Newer devices have moved the revision information back into a
+	 * standard location in MII_PHYS_ID[23]
+	 */
+	if (rev == 0)
+		rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
+
+	pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n",
+		     phydev_name(phydev), phydev->drv->name, rev, patch);
+
+	/* Dummy read to a register to workaround an issue upon reset where the
+	 * internal inverter may not allow the first MDIO transaction to pass
+	 * the MDIO management controller and make us return 0xffff for such
+	 * reads.
+	 */
+	phy_read(phydev, MII_BMSR);
+
+	switch (rev) {
+	case 0xa0:
+	case 0xb0:
+		ret = bcm_phy_28nm_a0b0_afe_config_init(phydev);
+		break;
+	case 0xd0:
+		ret = bcm7xxx_28nm_d0_afe_config_init(phydev);
+		break;
+	case 0xe0:
+	case 0xf0:
+	/* Rev G0 introduces a roll over */
+	case 0x10:
+		ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev);
+		break;
+	case 0x01:
+		ret = bcm7xxx_28nm_a0_patch_afe_config_init(phydev);
+		break;
+	default:
+		break;
+	}
+
+	if (ret)
+		return ret;
+
+	ret =  bcm_phy_enable_jumbo(phydev);
+	if (ret)
+		return ret;
+
+	ret = bcm_phy_downshift_get(phydev, &count);
+	if (ret)
+		return ret;
+
+	/* Only enable EEE if Wirespeed/downshift is disabled */
+	ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
+	if (ret)
+		return ret;
+
+	return bcm_phy_enable_apd(phydev, true);
+}
+
+static int bcm7xxx_28nm_resume(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Re-apply workarounds coming out suspend/resume */
+	ret = bcm7xxx_28nm_config_init(phydev);
+	if (ret)
+		return ret;
+
+	/* 28nm Gigabit PHYs come out of reset without any half-duplex
+	 * or "hub" compliant advertised mode, fix that. This does not
+	 * cause any problems with the PHY library since genphy_config_aneg()
+	 * gracefully handles auto-negotiated and forced modes.
+	 */
+	return genphy_config_aneg(phydev);
+}
+
+static int __phy_set_clr_bits(struct phy_device *dev, int location,
+			      int set_mask, int clr_mask)
+{
+	int v, ret;
+
+	v = __phy_read(dev, location);
+	if (v < 0)
+		return v;
+
+	v &= ~clr_mask;
+	v |= set_mask;
+
+	ret = __phy_write(dev, location, v);
+	if (ret < 0)
+		return ret;
+
+	return v;
+}
+
+static int phy_set_clr_bits(struct phy_device *dev, int location,
+			    int set_mask, int clr_mask)
+{
+	int ret;
+
+	mutex_lock(&dev->mdio.bus->mdio_lock);
+	ret = __phy_set_clr_bits(dev, location, set_mask, clr_mask);
+	mutex_unlock(&dev->mdio.bus->mdio_lock);
+
+	return ret;
+}
+
+static int bcm7xxx_28nm_ephy_01_afe_config_init(struct phy_device *phydev)
+{
+	int ret;
+
+	/* set shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
+			       MII_BCM7XXX_SHD_MODE_2, 0);
+	if (ret < 0)
+		return ret;
+
+	/* Set current trim values INT_trim = -1, Ext_trim =0 */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_BIAS_TRIM, 0x3BE0);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	/* Cal reset */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_TL4);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			       MII_BCM7XXX_TL4_RST_MSK, 0);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	/* Cal reset disable */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_TL4);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			       0, MII_BCM7XXX_TL4_RST_MSK);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+reset_shadow_mode:
+	/* reset shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
+			       MII_BCM7XXX_SHD_MODE_2);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* The 28nm EPHY does not support Clause 45 (MMD) used by bcm-phy-lib */
+static int bcm7xxx_28nm_ephy_apd_enable(struct phy_device *phydev)
+{
+	int ret;
+
+	/* set shadow mode 1 */
+	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST,
+			       MII_BRCM_FET_BT_SRE, 0);
+	if (ret < 0)
+		return ret;
+
+	/* Enable auto-power down */
+	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_SHDW_AUXSTAT2,
+			       MII_BRCM_FET_SHDW_AS2_APDE, 0);
+	if (ret < 0)
+		return ret;
+
+	/* reset shadow mode 1 */
+	ret = phy_set_clr_bits(phydev, MII_BRCM_FET_BRCMTEST, 0,
+			       MII_BRCM_FET_BT_SRE);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_ephy_eee_enable(struct phy_device *phydev)
+{
+	int ret;
+
+	/* set shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
+			       MII_BCM7XXX_SHD_MODE_2, 0);
+	if (ret < 0)
+		return ret;
+
+	/* Advertise supported modes */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_AN_EEE_ADV);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			MDIO_EEE_100TX);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	/* Restore Defaults */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_PCS_CTRL_2);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			MII_BCM7XXX_PCS_CTRL_2_DEF);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_EEE_THRESH);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			MII_BCM7XXX_EEE_THRESH_DEF);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	/* Enable EEE autonegotiation */
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL,
+			MII_BCM7XXX_SHD_3_AN_STAT);
+	if (ret < 0)
+		goto reset_shadow_mode;
+	ret = phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT,
+			(MII_BCM7XXX_AN_NULL_MSG_EN | MII_BCM7XXX_AN_EEE_EN));
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+reset_shadow_mode:
+	/* reset shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
+			       MII_BCM7XXX_SHD_MODE_2);
+	if (ret < 0)
+		return ret;
+
+	/* Restart autoneg */
+	phy_write(phydev, MII_BMCR,
+		  (BMCR_SPEED100 | BMCR_ANENABLE | BMCR_ANRESTART));
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_ephy_config_init(struct phy_device *phydev)
+{
+	u8 rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
+	int ret = 0;
+
+	pr_info_once("%s: %s PHY revision: 0x%02x\n",
+		     phydev_name(phydev), phydev->drv->name, rev);
+
+	/* Dummy read to a register to workaround a possible issue upon reset
+	 * where the internal inverter may not allow the first MDIO transaction
+	 * to pass the MDIO management controller and make us return 0xffff for
+	 * such reads.
+	 */
+	phy_read(phydev, MII_BMSR);
+
+	/* Apply AFE software work-around if necessary */
+	if (rev == 0x01) {
+		ret = bcm7xxx_28nm_ephy_01_afe_config_init(phydev);
+		if (ret)
+			return ret;
+	}
+
+	ret = bcm7xxx_28nm_ephy_eee_enable(phydev);
+	if (ret)
+		return ret;
+
+	return bcm7xxx_28nm_ephy_apd_enable(phydev);
+}
+
+static int bcm7xxx_16nm_ephy_afe_config(struct phy_device *phydev)
+{
+	int tmp, rcalcode, rcalnewcodelp, rcalnewcode11, rcalnewcode11d2;
+
+	/* Reset PHY */
+	tmp = genphy_soft_reset(phydev);
+	if (tmp)
+		return tmp;
+
+	/* Reset AFE and PLL */
+	bcm_phy_write_exp_sel(phydev, 0x0003, 0x0006);
+	/* Clear reset */
+	bcm_phy_write_exp_sel(phydev, 0x0003, 0x0000);
+
+	/* Write PLL/AFE control register to select 54MHz crystal */
+	bcm_phy_write_misc(phydev, 0x0030, 0x0001, 0x0000);
+	bcm_phy_write_misc(phydev, 0x0031, 0x0000, 0x044a);
+
+	/* Change Ka,Kp,Ki to pdiv=1 */
+	bcm_phy_write_misc(phydev, 0x0033, 0x0002, 0x71a1);
+	/* Configuration override */
+	bcm_phy_write_misc(phydev, 0x0033, 0x0001, 0x8000);
+
+	/* Change PLL_NDIV and PLL_NUDGE */
+	bcm_phy_write_misc(phydev, 0x0031, 0x0001, 0x2f68);
+	bcm_phy_write_misc(phydev, 0x0031, 0x0002, 0x0000);
+
+	/* Reference frequency is 54Mhz, config_mode[15:14] = 3 (low
+	 * phase)
+	 */
+	bcm_phy_write_misc(phydev, 0x0030, 0x0003, 0xc036);
+
+	/* Initialize bypass mode */
+	bcm_phy_write_misc(phydev, 0x0032, 0x0003, 0x0000);
+	/* Bypass code, default: VCOCLK enabled */
+	bcm_phy_write_misc(phydev, 0x0033, 0x0000, 0x0002);
+	/* LDOs at default setting */
+	bcm_phy_write_misc(phydev, 0x0030, 0x0002, 0x01c0);
+	/* Release PLL reset */
+	bcm_phy_write_misc(phydev, 0x0030, 0x0001, 0x0001);
+
+	/* Bandgap curvature correction to correct default */
+	bcm_phy_write_misc(phydev, 0x0038, 0x0000, 0x0010);
+
+	/* Run RCAL */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x0038);
+	bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x003b);
+	udelay(2);
+	bcm_phy_write_misc(phydev, 0x0039, 0x0003, 0x003f);
+	mdelay(5);
+
+	/* AFE_CAL_CONFIG_0, Vref=1000, Target=10, averaging enabled */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x1c82);
+	/* AFE_CAL_CONFIG_0, no reset and analog powerup */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9e82);
+	udelay(2);
+	/* AFE_CAL_CONFIG_0, start calibration */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9f82);
+	udelay(100);
+	/* AFE_CAL_CONFIG_0, clear start calibration, set HiBW */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9e86);
+	udelay(2);
+	/* AFE_CAL_CONFIG_0, start calibration with hi BW mode set */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0001, 0x9f86);
+	udelay(100);
+
+	/* Adjust 10BT amplitude additional +7% and 100BT +2% */
+	bcm_phy_write_misc(phydev, 0x0038, 0x0001, 0xe7ea);
+	/* Adjust 1G mode amplitude and 1G testmode1 */
+	bcm_phy_write_misc(phydev, 0x0038, 0x0002, 0xede0);
+
+	/* Read CORE_EXPA9 */
+	tmp = bcm_phy_read_exp_sel(phydev, 0x00a9);
+	/* CORE_EXPA9[6:1] is rcalcode[5:0] */
+	rcalcode = (tmp & 0x7e) / 2;
+	/* Correct RCAL code + 1 is -1% rprogr, LP: +16 */
+	rcalnewcodelp = rcalcode + 16;
+	/* Correct RCAL code + 1 is -15 rprogr, 11: +10 */
+	rcalnewcode11 = rcalcode + 10;
+	/* Saturate if necessary */
+	if (rcalnewcodelp > 0x3f)
+		rcalnewcodelp = 0x3f;
+	if (rcalnewcode11 > 0x3f)
+		rcalnewcode11 = 0x3f;
+	/* REXT=1 BYP=1 RCAL_st1<5:0>=new rcal code */
+	tmp = 0x00f8 + rcalnewcodelp * 256;
+	/* Program into AFE_CAL_CONFIG_2 */
+	bcm_phy_write_misc(phydev, 0x0039, 0x0003, tmp);
+	/* AFE_BIAS_CONFIG_0 10BT bias code (Bias: E4) */
+	bcm_phy_write_misc(phydev, 0x0038, 0x0001, 0xe7e4);
+	/* invert adc clock output and 'adc refp ldo current To correct
+	 * default
+	 */
+	bcm_phy_write_misc(phydev, 0x003b, 0x0000, 0x8002);
+	/* 100BT stair case, high BW, 1G stair case, alternate encode */
+	bcm_phy_write_misc(phydev, 0x003c, 0x0003, 0xf882);
+	/* 1000BT DAC transition method per Erol, bits[32], DAC Shuffle
+	 * sequence 1 + 10BT imp adjust bits
+	 */
+	bcm_phy_write_misc(phydev, 0x003d, 0x0000, 0x3201);
+	/* Non-overlap fix */
+	bcm_phy_write_misc(phydev, 0x003a, 0x0002, 0x0c00);
+
+	/* pwdb override (rxconfig<5>) to turn on RX LDO indpendent of
+	 * pwdb controls from DSP_TAP10
+	 */
+	bcm_phy_write_misc(phydev, 0x003a, 0x0001, 0x0020);
+
+	/* Remove references to channel 2 and 3 */
+	bcm_phy_write_misc(phydev, 0x003b, 0x0002, 0x0000);
+	bcm_phy_write_misc(phydev, 0x003b, 0x0003, 0x0000);
+
+	/* Set cal_bypassb bit rxconfig<43> */
+	bcm_phy_write_misc(phydev, 0x003a, 0x0003, 0x0800);
+	udelay(2);
+
+	/* Revert pwdb_override (rxconfig<5>) to 0 so that the RX pwr
+	 * is controlled by DSP.
+	 */
+	bcm_phy_write_misc(phydev, 0x003a, 0x0001, 0x0000);
+
+	/* Drop LSB */
+	rcalnewcode11d2 = (rcalnewcode11 & 0xfffe) / 2;
+	tmp = bcm_phy_read_misc(phydev, 0x003d, 0x0001);
+	/* Clear bits [11:5] */
+	tmp &= ~0xfe0;
+	/* set txcfg_ch0<5>=1 (enable + set local rcal) */
+	tmp |= 0x0020 | (rcalnewcode11d2 * 64);
+	bcm_phy_write_misc(phydev, 0x003d, 0x0001, tmp);
+	bcm_phy_write_misc(phydev, 0x003d, 0x0002, tmp);
+
+	tmp = bcm_phy_read_misc(phydev, 0x003d, 0x0000);
+	/* set txcfg<45:44>=11 (enable Rextra + invert fullscaledetect)
+	 */
+	tmp &= ~0x3000;
+	tmp |= 0x3000;
+	bcm_phy_write_misc(phydev, 0x003d, 0x0000, tmp);
+
+	return 0;
+}
+
+static int bcm7xxx_16nm_ephy_config_init(struct phy_device *phydev)
+{
+	int ret, val;
+
+	ret = bcm7xxx_16nm_ephy_afe_config(phydev);
+	if (ret)
+		return ret;
+
+	ret = bcm_phy_set_eee(phydev, true);
+	if (ret)
+		return ret;
+
+	ret = bcm_phy_read_shadow(phydev, BCM54XX_SHD_SCR3);
+	if (ret < 0)
+		return ret;
+
+	val = ret;
+
+	/* Auto power down of DLL enabled,
+	 * TXC/RXC disabled during auto power down.
+	 */
+	val &= ~BCM54XX_SHD_SCR3_DLLAPD_DIS;
+	val |= BIT(8);
+
+	ret = bcm_phy_write_shadow(phydev, BCM54XX_SHD_SCR3, val);
+	if (ret < 0)
+		return ret;
+
+	return bcm_phy_enable_apd(phydev, true);
+}
+
+static int bcm7xxx_16nm_ephy_resume(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Re-apply workarounds coming out suspend/resume */
+	ret = bcm7xxx_16nm_ephy_config_init(phydev);
+	if (ret)
+		return ret;
+
+	return genphy_config_aneg(phydev);
+}
+
+#define MII_BCM7XXX_REG_INVALID	0xff
+
+static u8 bcm7xxx_28nm_ephy_regnum_to_shd(u16 regnum)
+{
+	switch (regnum) {
+	case MDIO_CTRL1:
+		return MII_BCM7XXX_SHD_3_PCS_CTRL;
+	case MDIO_STAT1:
+		return MII_BCM7XXX_SHD_3_PCS_STATUS;
+	case MDIO_PCS_EEE_ABLE:
+		return MII_BCM7XXX_SHD_3_EEE_CAP;
+	case MDIO_AN_EEE_ADV:
+		return MII_BCM7XXX_SHD_3_AN_EEE_ADV;
+	case MDIO_AN_EEE_LPABLE:
+		return MII_BCM7XXX_SHD_3_EEE_LP;
+	case MDIO_PCS_EEE_WK_ERR:
+		return MII_BCM7XXX_SHD_3_EEE_WK_ERR;
+	default:
+		return MII_BCM7XXX_REG_INVALID;
+	}
+}
+
+static bool bcm7xxx_28nm_ephy_dev_valid(int devnum)
+{
+	return devnum == MDIO_MMD_AN || devnum == MDIO_MMD_PCS;
+}
+
+static int bcm7xxx_28nm_ephy_read_mmd(struct phy_device *phydev,
+				      int devnum, u16 regnum)
+{
+	u8 shd = bcm7xxx_28nm_ephy_regnum_to_shd(regnum);
+	int ret;
+
+	if (!bcm7xxx_28nm_ephy_dev_valid(devnum) ||
+	    shd == MII_BCM7XXX_REG_INVALID)
+		return -EOPNOTSUPP;
+
+	/* set shadow mode 2 */
+	ret = __phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
+				 MII_BCM7XXX_SHD_MODE_2, 0);
+	if (ret < 0)
+		return ret;
+
+	/* Access the desired shadow register address */
+	ret = __phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, shd);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	ret = __phy_read(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT);
+
+reset_shadow_mode:
+	/* reset shadow mode 2 */
+	__phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
+			   MII_BCM7XXX_SHD_MODE_2);
+	return ret;
+}
+
+static int bcm7xxx_28nm_ephy_write_mmd(struct phy_device *phydev,
+				       int devnum, u16 regnum, u16 val)
+{
+	u8 shd = bcm7xxx_28nm_ephy_regnum_to_shd(regnum);
+	int ret;
+
+	if (!bcm7xxx_28nm_ephy_dev_valid(devnum) ||
+	    shd == MII_BCM7XXX_REG_INVALID)
+		return -EOPNOTSUPP;
+
+	/* set shadow mode 2 */
+	ret = __phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
+				 MII_BCM7XXX_SHD_MODE_2, 0);
+	if (ret < 0)
+		return ret;
+
+	/* Access the desired shadow register address */
+	ret = __phy_write(phydev, MII_BCM7XXX_SHD_2_ADDR_CTRL, shd);
+	if (ret < 0)
+		goto reset_shadow_mode;
+
+	/* Write the desired value in the shadow register */
+	__phy_write(phydev, MII_BCM7XXX_SHD_2_CTRL_STAT, val);
+
+reset_shadow_mode:
+	/* reset shadow mode 2 */
+	return __phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0,
+				  MII_BCM7XXX_SHD_MODE_2);
+}
+
+static int bcm7xxx_28nm_ephy_resume(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Re-apply workarounds coming out suspend/resume */
+	ret = bcm7xxx_28nm_ephy_config_init(phydev);
+	if (ret)
+		return ret;
+
+	return genphy_config_aneg(phydev);
+}
+
+static int bcm7xxx_config_init(struct phy_device *phydev)
+{
+	int ret;
+
+	/* Enable 64 clock MDIO */
+	phy_write(phydev, MII_BCM7XXX_AUX_MODE, MII_BCM7XXX_64CLK_MDIO);
+	phy_read(phydev, MII_BCM7XXX_AUX_MODE);
+
+	/* set shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST,
+			MII_BCM7XXX_SHD_MODE_2, MII_BCM7XXX_SHD_MODE_2);
+	if (ret < 0)
+		return ret;
+
+	/* set iddq_clkbias */
+	phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0F00);
+	udelay(10);
+
+	/* reset iddq_clkbias */
+	phy_write(phydev, MII_BCM7XXX_100TX_DISC, 0x0C00);
+
+	phy_write(phydev, MII_BCM7XXX_100TX_FALSE_CAR, 0x7555);
+
+	/* reset shadow mode 2 */
+	ret = phy_set_clr_bits(phydev, MII_BCM7XXX_TEST, 0, MII_BCM7XXX_SHD_MODE_2);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+/* Workaround for putting the PHY in IDDQ mode, required
+ * for all BCM7XXX 40nm and 65nm PHYs
+ */
+static int bcm7xxx_suspend(struct phy_device *phydev)
+{
+	int ret;
+	static const struct bcm7xxx_regs {
+		int reg;
+		u16 value;
+	} bcm7xxx_suspend_cfg[] = {
+		{ MII_BCM7XXX_TEST, 0x008b },
+		{ MII_BCM7XXX_100TX_AUX_CTL, 0x01c0 },
+		{ MII_BCM7XXX_100TX_DISC, 0x7000 },
+		{ MII_BCM7XXX_TEST, 0x000f },
+		{ MII_BCM7XXX_100TX_AUX_CTL, 0x20d0 },
+		{ MII_BCM7XXX_TEST, 0x000b },
+	};
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(bcm7xxx_suspend_cfg); i++) {
+		ret = phy_write(phydev,
+				bcm7xxx_suspend_cfg[i].reg,
+				bcm7xxx_suspend_cfg[i].value);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int bcm7xxx_28nm_get_tunable(struct phy_device *phydev,
+				    struct ethtool_tunable *tuna,
+				    void *data)
+{
+	switch (tuna->id) {
+	case ETHTOOL_PHY_DOWNSHIFT:
+		return bcm_phy_downshift_get(phydev, (u8 *)data);
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+
+static int bcm7xxx_28nm_set_tunable(struct phy_device *phydev,
+				    struct ethtool_tunable *tuna,
+				    const void *data)
+{
+	u8 count = *(u8 *)data;
+	int ret;
+
+	switch (tuna->id) {
+	case ETHTOOL_PHY_DOWNSHIFT:
+		ret = bcm_phy_downshift_set(phydev, count);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	if (ret)
+		return ret;
+
+	/* Disable EEE advertisement since this prevents the PHY
+	 * from successfully linking up, trigger auto-negotiation restart
+	 * to let the MAC decide what to do.
+	 */
+	ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE);
+	if (ret)
+		return ret;
+
+	return genphy_restart_aneg(phydev);
+}
+
+static void bcm7xxx_28nm_get_phy_stats(struct phy_device *phydev,
+				       struct ethtool_stats *stats, u64 *data)
+{
+	struct bcm7xxx_phy_priv *priv = phydev->priv;
+
+	bcm_phy_get_stats(phydev, priv->stats, stats, data);
+}
+
+static int bcm7xxx_28nm_probe(struct phy_device *phydev)
+{
+	struct bcm7xxx_phy_priv *priv;
+	struct clk *clk;
+	int ret = 0;
+
+	priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	phydev->priv = priv;
+
+	priv->stats = devm_kcalloc(&phydev->mdio.dev,
+				   bcm_phy_get_sset_count(phydev), sizeof(u64),
+				   GFP_KERNEL);
+	if (!priv->stats)
+		return -ENOMEM;
+
+	clk = devm_clk_get_optional_enabled(&phydev->mdio.dev, NULL);
+	if (IS_ERR(clk))
+		return PTR_ERR(clk);
+
+	/* Dummy read to a register to workaround an issue upon reset where the
+	 * internal inverter may not allow the first MDIO transaction to pass
+	 * the MDIO management controller and make us return 0xffff for such
+	 * reads. This is needed to ensure that any subsequent reads to the
+	 * PHY will succeed.
+	 */
+	phy_read(phydev, MII_BMSR);
+
+	return ret;
+}
+
+#define BCM7XXX_28NM_GPHY(_oui, _name)					\
+{									\
+	.phy_id		= (_oui),					\
+	.phy_id_mask	= 0xfffffff0,					\
+	.name		= _name,					\
+	/* PHY_GBIT_FEATURES */						\
+	.flags		= PHY_IS_INTERNAL,				\
+	.config_init	= bcm7xxx_28nm_config_init,			\
+	.resume		= bcm7xxx_28nm_resume,				\
+	.get_tunable	= bcm7xxx_28nm_get_tunable,			\
+	.set_tunable	= bcm7xxx_28nm_set_tunable,			\
+	.get_sset_count	= bcm_phy_get_sset_count,			\
+	.get_strings	= bcm_phy_get_strings,				\
+	.get_stats	= bcm7xxx_28nm_get_phy_stats,			\
+	.probe		= bcm7xxx_28nm_probe,				\
+}
+
+#define BCM7XXX_28NM_EPHY(_oui, _name)					\
+{									\
+	.phy_id		= (_oui),					\
+	.phy_id_mask	= 0xfffffff0,					\
+	.name		= _name,					\
+	/* PHY_BASIC_FEATURES */					\
+	.flags		= PHY_IS_INTERNAL,				\
+	.config_init	= bcm7xxx_28nm_ephy_config_init,		\
+	.resume		= bcm7xxx_28nm_ephy_resume,			\
+	.get_sset_count	= bcm_phy_get_sset_count,			\
+	.get_strings	= bcm_phy_get_strings,				\
+	.get_stats	= bcm7xxx_28nm_get_phy_stats,			\
+	.probe		= bcm7xxx_28nm_probe,				\
+	.read_mmd	= bcm7xxx_28nm_ephy_read_mmd,			\
+	.write_mmd	= bcm7xxx_28nm_ephy_write_mmd,			\
+}
+
+#define BCM7XXX_40NM_EPHY(_oui, _name)					\
+{									\
+	.phy_id         = (_oui),					\
+	.phy_id_mask    = 0xfffffff0,					\
+	.name           = _name,					\
+	/* PHY_BASIC_FEATURES */					\
+	.flags          = PHY_IS_INTERNAL,				\
+	.soft_reset	= genphy_soft_reset,				\
+	.config_init    = bcm7xxx_config_init,				\
+	.suspend        = bcm7xxx_suspend,				\
+	.resume         = bcm7xxx_config_init,				\
+}
+
+#define BCM7XXX_16NM_EPHY(_oui, _name)					\
+{									\
+	.phy_id		= (_oui),					\
+	.phy_id_mask	= 0xfffffff0,					\
+	.name		= _name,					\
+	/* PHY_BASIC_FEATURES */					\
+	.flags		= PHY_IS_INTERNAL,				\
+	.get_sset_count	= bcm_phy_get_sset_count,			\
+	.get_strings	= bcm_phy_get_strings,				\
+	.get_stats	= bcm7xxx_28nm_get_phy_stats,			\
+	.probe		= bcm7xxx_28nm_probe,				\
+	.config_init	= bcm7xxx_16nm_ephy_config_init,		\
+	.config_aneg	= genphy_config_aneg,				\
+	.read_status	= genphy_read_status,				\
+	.resume		= bcm7xxx_16nm_ephy_resume,			\
+}
+
+static struct phy_driver bcm7xxx_driver[] = {
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM72113, "Broadcom BCM72113"),
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM72116, "Broadcom BCM72116"),
+	BCM7XXX_16NM_EPHY(PHY_ID_BCM72165, "Broadcom BCM72165"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7250, "Broadcom BCM7250"),
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM7255, "Broadcom BCM7255"),
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM7260, "Broadcom BCM7260"),
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM7268, "Broadcom BCM7268"),
+	BCM7XXX_28NM_EPHY(PHY_ID_BCM7271, "Broadcom BCM7271"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7278, "Broadcom BCM7278"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7364, "Broadcom BCM7364"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7366, "Broadcom BCM7366"),
+	BCM7XXX_16NM_EPHY(PHY_ID_BCM74165, "Broadcom BCM74165"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM74371, "Broadcom BCM74371"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7439, "Broadcom BCM7439"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7439_2, "Broadcom BCM7439 (2)"),
+	BCM7XXX_28NM_GPHY(PHY_ID_BCM7445, "Broadcom BCM7445"),
+	BCM7XXX_40NM_EPHY(PHY_ID_BCM7346, "Broadcom BCM7346"),
+	BCM7XXX_40NM_EPHY(PHY_ID_BCM7362, "Broadcom BCM7362"),
+	BCM7XXX_40NM_EPHY(PHY_ID_BCM7425, "Broadcom BCM7425"),
+	BCM7XXX_40NM_EPHY(PHY_ID_BCM7429, "Broadcom BCM7429"),
+	BCM7XXX_40NM_EPHY(PHY_ID_BCM7435, "Broadcom BCM7435"),
+	BCM7XXX_16NM_EPHY(PHY_ID_BCM7712, "Broadcom BCM7712"),
+};
+
+static struct mdio_device_id __maybe_unused bcm7xxx_tbl[] = {
+	{ PHY_ID_BCM72113, 0xfffffff0 },
+	{ PHY_ID_BCM72116, 0xfffffff0, },
+	{ PHY_ID_BCM72165, 0xfffffff0, },
+	{ PHY_ID_BCM7250, 0xfffffff0, },
+	{ PHY_ID_BCM7255, 0xfffffff0, },
+	{ PHY_ID_BCM7260, 0xfffffff0, },
+	{ PHY_ID_BCM7268, 0xfffffff0, },
+	{ PHY_ID_BCM7271, 0xfffffff0, },
+	{ PHY_ID_BCM7278, 0xfffffff0, },
+	{ PHY_ID_BCM7364, 0xfffffff0, },
+	{ PHY_ID_BCM7366, 0xfffffff0, },
+	{ PHY_ID_BCM7346, 0xfffffff0, },
+	{ PHY_ID_BCM7362, 0xfffffff0, },
+	{ PHY_ID_BCM7425, 0xfffffff0, },
+	{ PHY_ID_BCM7429, 0xfffffff0, },
+	{ PHY_ID_BCM74371, 0xfffffff0, },
+	{ PHY_ID_BCM7439, 0xfffffff0, },
+	{ PHY_ID_BCM7435, 0xfffffff0, },
+	{ PHY_ID_BCM7445, 0xfffffff0, },
+	{ PHY_ID_BCM7712, 0xfffffff0, },
+	{ }
+};
+
+module_phy_driver(bcm7xxx_driver);
+
+MODULE_DEVICE_TABLE(mdio, bcm7xxx_tbl);
+
+MODULE_DESCRIPTION("Broadcom BCM7xxx internal PHY driver");
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Broadcom Corporation");