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tg3 / broadcom: Optionally disable TXC if no link

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This patch adds code to disable the TXC and RXC reference clocks if link
is not available.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Reviewed-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Matt Carlson
2009-11-02 14:32:38 +00:00
committed by David S. Miller
parent c704dc23ca
commit 52fae08371
3 changed files with 7 additions and 0 deletions
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5
drivers/net/phy/broadcom.c
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@@ -108,6 +108,7 @@
#define BCM54XX_SHD_SCR3 0x05
#define BCM54XX_SHD_SCR3_DEF_CLK125 0x0001
#define BCM54XX_SHD_SCR3_DLLAPD_DIS 0x0002
#define BCM54XX_SHD_SCR3_TRDDAPD 0x0004
/* 01010: Auto Power-Down */
#define BCM54XX_SHD_APD 0x0a
@@ -362,6 +363,9 @@ static void bcm54xx_adjust_rxrefclk(struct phy_device *phydev)
else
val |= BCM54XX_SHD_SCR3_DLLAPD_DIS;
if (phydev->dev_flags & PHY_BRCM_DIS_TXCRXC_NOENRGY)
val |= BCM54XX_SHD_SCR3_TRDDAPD;
if (orig != val)
bcm54xx_shadow_write(phydev, BCM54XX_SHD_SCR3, val);
@@ -409,6 +413,7 @@ static int bcm54xx_config_init(struct phy_device *phydev)
bcm54xx_shadow_write(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);