diff options
| author | Matt Carlson <mcarlson@broadcom.com> | 2010-04-12 06:58:26 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-04-13 02:25:44 -0700 |
| commit | a977dbe8445b8a81d6127c4aa9112a2c29a1a008 (patch) | |
| tree | 00120e7881eb329122d0d4ca06d4b90b6c8c0444 /drivers/net/tg3.c | |
| parent | 1a3190254c0d1d1951e1d7e93542387c6ec82384 (diff) | |
tg3: Reduce 57765 core clock when link at 10Mbps
This patch reduces the core clock to 6.25MHz when operating at 10Mbps
link speed. This is needed to prevent a bug that will ultimately cause
transmits to cease.
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/tg3.c')
| -rw-r--r-- | drivers/net/tg3.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/tg3.c b/drivers/net/tg3.c index a0ab89eb8bcc..3e893231fef3 100644 --- a/drivers/net/tg3.c +++ b/drivers/net/tg3.c @@ -7654,6 +7654,11 @@ static int tg3_reset_hw(struct tg3 *tp, int reset_phy) val | TG3_PCIE_PL_LO_PHYCTL5_DIS_L2CLKREQ); tw32(GRC_MODE, grc_mode); + + val = tr32(TG3_CPMU_LSPD_10MB_CLK); + val &= ~CPMU_LSPD_10MB_MACCLK_MASK; + val |= CPMU_LSPD_10MB_MACCLK_6_25; + tw32(TG3_CPMU_LSPD_10MB_CLK, val); } /* This works around an issue with Athlon chipsets on |