From 0c2fdc25ae4520e98082bc3ecfea4dce06d52018 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 11 Nov 2014 14:55:14 -0800 Subject: [PATCH] net: phy: bcm7xxx: add workaround for PHY revision E0 and F0 PHY revisions E0 and F0 share the same shorter workaround initialization sequence. Dedicate a special function for these two PHY revisions to perform the needed workaround sequence. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/phy/bcm7xxx.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/drivers/net/phy/bcm7xxx.c b/drivers/net/phy/bcm7xxx.c index 095cfc92326e..7a53af4346e4 100644 --- a/drivers/net/phy/bcm7xxx.c +++ b/drivers/net/phy/bcm7xxx.c @@ -162,6 +162,31 @@ static int bcm7xxx_28nm_d0_afe_config_init(struct phy_device *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 */ + phy_write_misc(phydev, AFE_RXCONFIG_1, 0x9b2f); + + /* AFE_VDCA_ICTRL_0, set Iq=1101 instead of 0111 for AB symmetry */ + 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 + */ + 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_BCM7XXX_CORE_BASE1E, 0x0010); + + /* DSP_TAP10, adjust bias current trim (+0% swing, +0 tick) */ + phy_write_misc(phydev, DSP_TAP10, 0x011b); + + /* Reset R_CAL/RC_CAL engine */ + r_rc_cal_reset(phydev); + + return 0; +} + static int bcm7xxx_apd_enable(struct phy_device *phydev) { int val; @@ -225,6 +250,10 @@ static int bcm7xxx_28nm_config_init(struct phy_device *phydev) case 0xd0: ret = bcm7xxx_28nm_d0_afe_config_init(phydev); break; + case 0xe0: + case 0xf0: + ret = bcm7xxx_28nm_e0_plus_afe_config_init(phydev); + break; default: break; } -- GitLab