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authorMatt Carlson <mcarlson@broadcom.com>2009-08-25 10:09:07 +0000
committerDavid S. Miller <davem@davemloft.net>2009-08-26 15:47:56 -0700
commitbb85fbb6a98d8edab81599913559c7ff0a963984 (patch)
tree3509fc3b02a48597f3dac4d5678db547e33f69a6 /drivers/net
parent5e7ccf2003e6a9c35b5aa24953ba5009a1a8b653 (diff)
tg3: Tune 5785 clock switching
This patch tunes the timeouts the CPMU uses to decide when to switch from the clocks output by the PHY to internal clock sources. 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')
-rw-r--r--drivers/net/tg3.c15
-rw-r--r--drivers/net/tg3.h4
2 files changed, 14 insertions, 5 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c
index 9ae33208358..41e0d40259e 100644
--- a/drivers/net/tg3.c
+++ b/drivers/net/tg3.c
@@ -917,7 +917,9 @@ static void tg3_mdio_config_5785(struct tg3 *tp)
tw32(MAC_PHYCFG2, val);
val = tr32(MAC_PHYCFG1);
- val &= ~MAC_PHYCFG1_RGMII_INT;
+ val &= ~(MAC_PHYCFG1_RGMII_INT |
+ MAC_PHYCFG1_RXCLK_TO_MASK | MAC_PHYCFG1_TXCLK_TO_MASK);
+ val |= MAC_PHYCFG1_RXCLK_TIMEOUT | MAC_PHYCFG1_TXCLK_TIMEOUT;
tw32(MAC_PHYCFG1, val);
return;
@@ -933,15 +935,18 @@ static void tg3_mdio_config_5785(struct tg3 *tp)
tw32(MAC_PHYCFG2, val);
- val = tr32(MAC_PHYCFG1) & ~(MAC_PHYCFG1_RGMII_EXT_RX_DEC |
- MAC_PHYCFG1_RGMII_SND_STAT_EN);
- if (tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE) {
+ val = tr32(MAC_PHYCFG1);
+ val &= ~(MAC_PHYCFG1_RXCLK_TO_MASK | MAC_PHYCFG1_TXCLK_TO_MASK |
+ MAC_PHYCFG1_RGMII_EXT_RX_DEC | MAC_PHYCFG1_RGMII_SND_STAT_EN);
+ if (!(tp->tg3_flags3 & TG3_FLG3_RGMII_STD_IBND_DISABLE)) {
if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_RX_EN)
val |= MAC_PHYCFG1_RGMII_EXT_RX_DEC;
if (tp->tg3_flags3 & TG3_FLG3_RGMII_EXT_IBND_TX_EN)
val |= MAC_PHYCFG1_RGMII_SND_STAT_EN;
}
- tw32(MAC_PHYCFG1, val | MAC_PHYCFG1_RGMII_INT | MAC_PHYCFG1_TXC_DRV);
+ val |= MAC_PHYCFG1_RXCLK_TIMEOUT | MAC_PHYCFG1_TXCLK_TIMEOUT |
+ MAC_PHYCFG1_RGMII_INT | MAC_PHYCFG1_TXC_DRV;
+ tw32(MAC_PHYCFG1, val);
val = tr32(MAC_EXT_RGMII_MODE);
val &= ~(MAC_RGMII_MODE_RX_INT_B |
diff --git a/drivers/net/tg3.h b/drivers/net/tg3.h
index 636008cf3c8..d096e10ad63 100644
--- a/drivers/net/tg3.h
+++ b/drivers/net/tg3.h
@@ -524,6 +524,10 @@
/* 0x598 --> 0x5a0 unused */
#define MAC_PHYCFG1 0x000005a0
#define MAC_PHYCFG1_RGMII_INT 0x00000001
+#define MAC_PHYCFG1_RXCLK_TO_MASK 0x00001ff0
+#define MAC_PHYCFG1_RXCLK_TIMEOUT 0x00001000
+#define MAC_PHYCFG1_TXCLK_TO_MASK 0x01ff0000
+#define MAC_PHYCFG1_TXCLK_TIMEOUT 0x01000000
#define MAC_PHYCFG1_RGMII_EXT_RX_DEC 0x02000000
#define MAC_PHYCFG1_RGMII_SND_STAT_EN 0x04000000
#define MAC_PHYCFG1_TXC_DRV 0x20000000