From patchwork Tue Aug 16 05:55:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sean Wang X-Patchwork-Id: 9282629 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4049A6086A for ; Tue, 16 Aug 2016 05:55:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3083128D87 for ; Tue, 16 Aug 2016 05:55:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2547C28D8D; Tue, 16 Aug 2016 05:55:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CF7E928D87 for ; Tue, 16 Aug 2016 05:55:57 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bZXLx-0000xz-BZ; Tue, 16 Aug 2016 05:55:57 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bZXLr-0000sj-VC for linux-mediatek@lists.infradead.org; Tue, 16 Aug 2016 05:55:53 +0000 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1031860613; Tue, 16 Aug 2016 13:55:18 +0800 Received: from mtkswgap22.mediatek.inc (172.21.77.33) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Tue, 16 Aug 2016 13:55:17 +0800 From: Sean Wang To: , Subject: [PATCH net v3 2/3] net: ethernet: mediatek: fix flow control settings on GMAC0 is not being enabled properly Date: Tue, 16 Aug 2016 13:55:14 +0800 Message-ID: <1471326915-15162-3-git-send-email-sean.wang@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1471326915-15162-1-git-send-email-sean.wang@mediatek.com> References: <1471326915-15162-1-git-send-email-sean.wang@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160815_225552_223324_EBD51723 X-CRM114-Status: GOOD ( 11.21 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: netdev@vger.kernel.org, nbd@openwrt.org, Sean Wang , linux-mediatek@lists.infradead.org, keyhaede@gmail.com Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Commit 08ef55c6f257acf3bdc6940813f80e8f0f5d90ec ("net-next: mediatek: fix gigabit and flow control advertisement") had supported proper flow control settings for GMAC1. But for GMAC0, 1.GMAC0 shares the common logic with GMAC1 inside mtk_phy_link_adjust() to adapt various settings for the target phy. 2.GMAC0 uses fixed-phy to connect to a builtin gigabit switch with fixed link speed as commit 0c72c50f6f93b0c3daa9ea35d89ab3a933c7b5a0 ("net-next: mediatek: add fixed-phy support") describes. 3.However, fixed-phy doesn't enable SUPPORTED_Pause & SUPPORTED_Asym_Pause supported flag on default that would cause mtk_phy_link_adjust() not to enable flow control setting on GMAC0 properly and cause packet dropped when high traffic. Due to these reasons, the patch adds SUPPORTED_Pause & SUPPORTED_Asym_Pause supported flags on fixed-phy used by the driver to have proper handling on the both GMAC with the shared common logic. Signed-off-by: Sean Wang --- drivers/net/ethernet/mediatek/mtk_eth_soc.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c index f19b8b9..eb59a73 100644 --- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c +++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c @@ -267,6 +267,11 @@ static int mtk_phy_connect(struct mtk_mac *mac) mac->phy_dev->autoneg = AUTONEG_ENABLE; mac->phy_dev->speed = 0; mac->phy_dev->duplex = 0; + + if (of_phy_is_fixed_link(mac->of_node)) + mac->phy_dev->supported |= + SUPPORTED_Pause | SUPPORTED_Asym_Pause; + mac->phy_dev->supported &= PHY_GBIT_FEATURES | SUPPORTED_Pause | SUPPORTED_Asym_Pause; mac->phy_dev->advertising = mac->phy_dev->supported |