From patchwork Wed Jun 19 22:41:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sagar Cheluvegowda X-Patchwork-Id: 13704680 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3C505C2BA1A for ; Wed, 19 Jun 2024 22:42:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:CC:To:In-Reply-To:References :Message-ID:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=kGNbEjWmntIfDlVgJX8SixwIHR31cFihNRbVn8LQRoU=; b=TBofcz5Kgf0VDh1o6+8hDKckNK 8o6KCysRmoFP5HgfscvHlzzcLRQz/sIiTyWN5GD79GhHN/6ddnsjCJVe8A7F+PZM5DePvLxn1FNs1 xSYjId/mhOux/ob/Ofl2MoVtsjeOko1/n9cqlE7zrgFiMmzJhejRX+RiNBzEFr+91Q6l/52EudtCs VB1/+VUTqHtykdyftT+JDhjZXuc+uBmXXZ37rCdhMcA9v1qcNWd5AfeGR/AucufoejPojSZpodmYz Q0tiFuTl+PNlnLdhImPr9+IoZYiOKn/Rb4RY7TUgPLx6SxDSSAW1TekMnFdpoFINpn0hNFzjwFlnk fyoJFBwA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sK407-00000002uWk-31bf; Wed, 19 Jun 2024 22:41:59 +0000 Received: from mx0a-0031df01.pphosted.com ([205.220.168.131]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sK404-00000002uUw-1NIV for linux-arm-kernel@lists.infradead.org; Wed, 19 Jun 2024 22:41:57 +0000 Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 45JLDtKl028107; Wed, 19 Jun 2024 22:41:42 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= kGNbEjWmntIfDlVgJX8SixwIHR31cFihNRbVn8LQRoU=; b=I6jAH31GTkhMkKrf ztlH+XUwhWaju2MtVIRZ4PWcbMEaQwQuFfGnqYK2SsS5WKIIxhVXr2kt1xSEAcxY lfQUOg2qW8yuhW2Dda710jqd55vUyl8MzQ+uWmz2U2+cAWFcsJyBbcTyquHfwFK3 lBnTD1dnXgb9TZxENhV03hVoRSGRo7fzZGrZQHviJ4SYxR8Ego0Waap4zJHv49+E /CJZkuXZZtW2wmO4tF2KTiUma/SgdbsyBBpeqT2n+mbXANLz4kH7zEYFgzk8eb5Q pBE0tT1Gh/UqPSUbUoPZUvDdi7XpwRExU+Ho98vaSTRd3Wh59vbF0xDLLWX88qnP cvD0Pg== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3yujc4jut2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jun 2024 22:41:42 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA05.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 45JMff4n024661 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 19 Jun 2024 22:41:41 GMT Received: from hu-scheluve-lv.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 19 Jun 2024 15:41:38 -0700 From: Sagar Cheluvegowda Date: Wed, 19 Jun 2024 15:41:30 -0700 Subject: [PATCH 2/3] net: stmmac: Bring down the clocks to lower frequencies when mac link goes down MIME-Version: 1.0 Message-ID: <20240619-icc_bw_voting_from_ethqos-v1-2-6112948b825e@quicinc.com> References: <20240619-icc_bw_voting_from_ethqos-v1-0-6112948b825e@quicinc.com> In-Reply-To: <20240619-icc_bw_voting_from_ethqos-v1-0-6112948b825e@quicinc.com> To: Vinod Koul , Alexandre Torgue , Jose Abreu , "David S. Miller" , Eric Dumazet , "Jakub Kicinski" , Paolo Abeni , Maxime Coquelin , Russell King , "Rob Herring" , Krzysztof Kozlowski , "Conor Dooley" , Bhupesh Sharma CC: , Andrew Halaney , , , , , , , Sagar Cheluvegowda X-Mailer: b4 0.13.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: rtZMbwd5GG4e4AOekBViDzMnvDFIDVi9 X-Proofpoint-GUID: rtZMbwd5GG4e4AOekBViDzMnvDFIDVi9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-19_02,2024-06-19_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=986 malwarescore=0 lowpriorityscore=0 mlxscore=0 bulkscore=0 impostorscore=0 spamscore=0 phishscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2405170001 definitions=main-2406190171 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240619_154156_447926_76F6032F X-CRM114-Status: GOOD ( 12.43 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org When mac link goes down we don't need to mainitain the clocks to operate at higher frequencies, as an optimized solution to save power when the link goes down we are trying to bring down the clocks to the frequencies corresponding to the lowest speed possible. Signed-off-by: Sagar Cheluvegowda --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index b3afc7cb7d72..bfb201a4b885 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -990,6 +990,9 @@ static void stmmac_mac_link_down(struct phylink_config *config, { struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev)); + if (priv->plat->fix_mac_speed) + priv->plat->fix_mac_speed(priv->plat->bsp_priv, SPEED_10, mode); + stmmac_mac_set(priv, priv->ioaddr, false); priv->eee_active = false; priv->tx_lpi_enabled = false;