diff options
| author |   Matt Carlson <mcarlson@broadcom.com> | 2009-08-25 10:11:26 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2009-08-26 15:48:06 -0700 |
| commit | d9221e66002a7f24fb71b73132aa46c40079745f (patch) | |
| tree | 88ce75dfe2afa91b853e0cb714b87aeb3b2a5a1f /drivers/net/phy/broadcom.c | |
| parent | broadcom: Add AC131 phy support (diff) | |
| download | linux-dev-d9221e66002a7f24fb71b73132aa46c40079745f.tar.xz linux-dev-d9221e66002a7f24fb71b73132aa46c40079745f.zip | |
broadcom: Make the 57780 IEEE compliant
This brings the 57780's phy into IEEE compliance by suppressing the
common mode oscillation.
Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/broadcom.c')
| -rw-r--r-- | drivers/net/phy/broadcom.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c index 3262a2474b07..f81e53222230 100644 --- a/drivers/net/phy/broadcom.c +++ b/drivers/net/phy/broadcom.c @@ -19,6 +19,11 @@ #define PHY_ID_BCM50610 0x0143bd60 #define PHY_ID_BCM50610M 0x0143bd70 +#define PHY_ID_BCM57780 0x03625d90 + +#define BRCM_PHY_MODEL(phydev) \ + ((phydev)->drv->phy_id & (phydev)->drv->phy_id_mask) + #define MII_BCM54XX_ECR 0x10 /* BCM54xx extended control register */ #define MII_BCM54XX_ECR_IM 0x1000 /* Interrupt mask */ @@ -118,6 +123,7 @@ #define MII_BCM54XX_EXP_EXP08_EARLY_DAC_WAKE 0x0200 #define MII_BCM54XX_EXP_EXP75 0x0f75 #define MII_BCM54XX_EXP_EXP75_VDACCTRL 0x003c +#define MII_BCM54XX_EXP_EXP75_CM_OSC 0x0001 #define MII_BCM54XX_EXP_EXP96 0x0f96 #define MII_BCM54XX_EXP_EXP96_MYST 0x0010 #define MII_BCM54XX_EXP_EXP97 0x0f97 @@ -194,7 +200,7 @@ static int bcm54xx_shadow_write(struct phy_device *phydev, u16 shadow, u16 val) } /* Indirect register access functions for the Expansion Registers */ -static int bcm54xx_exp_read(struct phy_device *phydev, u8 regnum) +static int bcm54xx_exp_read(struct phy_device *phydev, u16 regnum) { int val; @@ -308,6 +314,33 @@ static int bcm54xx_config_init(struct phy_device *phydev) return err; } + if (BRCM_PHY_MODEL(phydev) == PHY_ID_BCM57780) { + int err2; + + 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; + + reg = bcm54xx_exp_read(phydev, MII_BCM54XX_EXP_EXP75); + if (reg < 0) + goto error; + + reg |= MII_BCM54XX_EXP_EXP75_CM_OSC; + err = bcm54xx_exp_write(phydev, MII_BCM54XX_EXP_EXP75, reg); + +error: + err2 = bcm54xx_auxctl_write(phydev, + MII_BCM54XX_AUXCTL_SHDWSEL_AUXCTL, + MII_BCM54XX_AUXCTL_ACTL_TX_6DB); + if (err) + return err; + if (err2) + return err2; + } + return 0; } @@ -694,7 +727,7 @@ static struct phy_driver bcm50610m_driver = { }; static struct phy_driver bcm57780_driver = { - .phy_id = 0x03625d90, + .phy_id = PHY_ID_BCM57780, .phy_id_mask = 0xfffffff0, .name = "Broadcom BCM57780", .features = PHY_GBIT_FEATURES | |