From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Nithin Nayak Sujir" Subject: [PATCH net] tg3: 5715 does not link up when autoneg off Date: Tue, 12 Mar 2013 18:32:48 -0700 Message-ID: <1363138368-10651-1-git-send-email-nsujir@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, marcinmiotk81@gmail.com, "Nithin Sujir" , "Michael Chan" To: davem@davemloft.net Return-path: Received: from mms2.broadcom.com ([216.31.210.18]:1286 "EHLO mms2.broadcom.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755285Ab3CMBdF (ORCPT ); Tue, 12 Mar 2013 21:33:05 -0400 Sender: netdev-owner@vger.kernel.org List-ID: From: Nithin Sujir Commit d13ba512cbba7de5d55d7a3b2aae7d83c8921457 cleaned up the autoneg advertisement by removing some dead code. One effect of this change was that the advertisement register would not be updated if autoneg is turned off. This exposed a bug on the 5715 device w.r.t linking. The 5715 defaults to advertise only 10Mb Full duplex. But with autoneg disabled, it needs the configured speed enabled in the advertisement register to link up. This patch adds the work around to advertise all speeds on the 5715 when autoneg is disabled. Reported-by: Marcin Miotk Reviewed-by: Benjamin Li Signed-off-by: Nithin Nayak Sujir Signed-off-by: Michael Chan --- drivers/net/ethernet/broadcom/tg3.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c index 93729f9..67d2663 100644 --- a/drivers/net/ethernet/broadcom/tg3.c +++ b/drivers/net/ethernet/broadcom/tg3.c @@ -4130,6 +4130,14 @@ static void tg3_phy_copper_begin(struct tg3 *tp) tp->link_config.active_speed = tp->link_config.speed; tp->link_config.active_duplex = tp->link_config.duplex; + if (tg3_asic_rev(tp) == ASIC_REV_5714) { + /* With autoneg disabled, 5715 only links up when the + * advertisement register has the configured speed + * enabled. + */ + tg3_writephy(tp, MII_ADVERTISE, ADVERTISE_ALL); + } + bmcr = 0; switch (tp->link_config.speed) { default: -- 1.8.1.4