* [PATCH 19/20] tg3 / broadcom: Optionally disable TXC if no link
@ 2009-11-03 0:32 Matt Carlson
0 siblings, 0 replies; only message in thread
From: Matt Carlson @ 2009-11-03 0:32 UTC (permalink / raw)
To: davem; +Cc: netdev, andy
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>
---
drivers/net/phy/broadcom.c | 5 +++++
drivers/net/tg3.c | 1 +
include/linux/brcmphy.h | 1 +
3 files changed, 7 insertions(+), 0 deletions(-)
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c
index 7b10495..f63c96a 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);
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index f74bf91..50bb53d 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -1103,6 +1103,7 @@ static int tg3_mdio_init(struct tg3 *tp)
case TG3_PHY_ID_BCM50610M:
phydev->dev_flags |= PHY_BRCM_CLEAR_RGMII_MODE |
PHY_BRCM_RX_REFCLK_UNUSED |
+ PHY_BRCM_DIS_TXCRXC_NOENRGY |
PHY_BRCM_AUTO_PWRDWN_ENABLE;
if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)
phydev->dev_flags |= PHY_BRCM_STD_IBND_DISABLE;
diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index 5943227..2b31b91 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -9,4 +9,5 @@
#define PHY_BRCM_EXT_IBND_RX_ENABLE 0x00001000
#define PHY_BRCM_EXT_IBND_TX_ENABLE 0x00002000
#define PHY_BRCM_CLEAR_RGMII_MODE 0x00004000
+#define PHY_BRCM_DIS_TXCRXC_NOENRGY 0x00008000
#define PHY_BCM_FLAGS_VALID 0x80000000
--
1.6.4.4
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2009-11-03 0:32 [PATCH 19/20] tg3 / broadcom: Optionally disable TXC if no link Matt Carlson
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