forked from Minki/linux
net: phy: bcm7xxx: Implement EGPHY workaround for 7278
Implement the HW design team recommended workaround in for 7278. Since the GPHY now returns its revision information in MII_PHYS_ID[23] we need to check whether the revision provided in flags is 0 or not. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -167,6 +167,31 @@ static int bcm7xxx_28nm_e0_plus_afe_config_init(struct phy_device *phydev)
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return 0;
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}
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static int bcm7xxx_28nm_a0_patch_afe_config_init(struct phy_device *phydev)
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{
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/* +1 RC_CAL codes for RL centering for both LT and HT conditions */
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bcm_phy_write_misc(phydev, AFE_RXCONFIG_2, 0xd003);
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/* Cut master bias current by 2% to compensate for RC_CAL offset */
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bcm_phy_write_misc(phydev, DSP_TAP10, 0x791b);
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/* Improve hybrid leakage */
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bcm_phy_write_misc(phydev, AFE_HPF_TRIM_OTHERS, 0x10e3);
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/* Change rx_on_tune 8 to 0xf */
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bcm_phy_write_misc(phydev, 0x21, 0x2, 0x87f6);
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/* Change 100Tx EEE bandwidth */
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bcm_phy_write_misc(phydev, 0x22, 0x2, 0x017d);
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/* Enable ffe zero detection for Vitesse interoperability */
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bcm_phy_write_misc(phydev, 0x26, 0x2, 0x0015);
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r_rc_cal_reset(phydev);
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return 0;
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}
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static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
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{
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u8 rev = PHY_BRCM_7XXX_REV(phydev->dev_flags);
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@ -174,6 +199,12 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
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u8 count;
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int ret = 0;
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/* Newer devices have moved the revision information back into a
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* standard location in MII_PHYS_ID[23]
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*/
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if (rev == 0)
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rev = phydev->phy_id & ~phydev->drv->phy_id_mask;
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pr_info_once("%s: %s PHY revision: 0x%02x, patch: %d\n",
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phydev_name(phydev), phydev->drv->name, rev, patch);
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@ -197,6 +228,9 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev)
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case 0x10:
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ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev);
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break;
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case 0x01:
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ret = bcm7xxx_28nm_a0_patch_afe_config_init(phydev);
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break;
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default:
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break;
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}
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