aboutsummaryrefslogtreecommitdiff
path: root/drivers/net/phy
diff options
context:
space:
mode:
authorMatt Carlson <mcarlson@broadcom.com>2009-11-02 14:32:38 +0000
committerDavid S. Miller <davem@davemloft.net>2009-11-02 23:39:15 -0800
commit52fae0837153e86e4dabaf5df517a0b8b7a20bd7 (patch)
tree72259bf0230f7facdbf6d928f8f1f662a133e10b /drivers/net/phy
parentc704dc23cac0e433796bfe0a1fe2f1a64da11ac7 (diff)
tg3 / broadcom: Optionally disable TXC if no link
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>
Diffstat (limited to 'drivers/net/phy')
-rw-r--r--drivers/net/phy/broadcom.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 7b10495fe8f..f63c96a4ecb 100644
--- a/drivers/net/phy/broadcom.c
+++ b/drivers/net/phy/broadcom.c
@@ -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);