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Message-ID: <1271091511-11173-4-git-send-email-mcarlson@broadcom.com> Date: Mon, 12 Apr 2010 09:58:26 -0700 From: "Matt Carlson" <mcarlson@...adcom.com> To: davem@...emloft.net cc: netdev@...r.kernel.org, andy@...yhouse.net, mcarlson@...adcom.com Subject: [PATCH net-next 3/8] 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@...adcom.com> Reviewed-by: Michael Chan <mchan@...adcom.com> --- 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 a0ab89e..3e89323 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 -- 1.6.4.4 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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