From patchwork Sat Sep 23 13:48:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Vladimir Oltean X-Patchwork-Id: 13396749 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 7458ACE7A88 for ; Sat, 23 Sep 2023 13:49:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=2UygQeCfBei78sXppBOcjHKlqjs4uUWwNB6683XtBiY=; b=hSDg2KRerr1nX3 dK/pnGpuchxosJbElnIkc/hUuaTYGzRmtvUwAAfhVxcUUeGX0h27Fm89790bxF+OJqmDA0ZuT1lqM wFlxTCqRgP7R09ea+PJhG7wnI8JxzTYPmg3A2d60MdBjKmGDHQLPaI6060/ADbUmAhw/vTAXlCGcu Ol2Bx//Ky7uW19FEIKz6WKf25HF0gxCjaLM9eFbqGFyTdrTVh+XYjqFBIOBWI4WJvgxX0m2n/zZAQ dcFiNAZXAXnuN4j+HB5XlKf9K9SUwlFnOrAw9QKpOEKL/vm73zs1CI88WOpJLH926giHbCuiZLtdz AKleUEu6el3dhyyGF5Vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qk30s-00B33r-0Y; Sat, 23 Sep 2023 13:49:38 +0000 Received: from mail-vi1eur05on20609.outbound.protection.outlook.com ([2a01:111:f400:7d00::609] helo=EUR05-VI1-obe.outbound.protection.outlook.com) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qk30p-00B30p-0k for linux-phy@lists.infradead.org; Sat, 23 Sep 2023 13:49:36 +0000 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FFKgXbVoJj4EaJYLNAmWJJa9qp9f9tHKGggXdk8P6FYsYvC12FMAhgiETHFtQzpQb7iGvfplzXyXxrlWquNJXVvKBwDlC8E0MHVl0JtUZuD1lip+6FdJDiCdRE/2pCbsHRSuHCu7XnFVVHCh8YKsb4dEGjbXG3X4HaURIETVF86SnXyImvwL80mqsoYJZs+mZArJCx7bjEVG/qrNHDo073VQHQc821rmnezYqKpLvyGNWBGyBRSJB0chAdax6jbSMgCta/OddZMN5D1re/YorXsoMgzJtb5+Ip0HI+18+CFCQrGvLe3h30jLU3ObBhU7C6sx0v/4eVoRdU3+U3a1+g== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=qigG5kUcxAwEk9WKAMwLV1yzRRj89M0MJtvmmZxb0iM=; b=U4v5VFT8f3/gsfXdabLEq1WLm+azxfl92H8f+/YbVVWmqG1pP7sS1fylW5v6sq2mpbWDqfQkZbhad8Llx6Pfh2EiuRn/z5RJZwdoCTjCNSzgqmAGF2RFs++AHFtiwGxXovJoF7aShEGaLoKlYn5CuFcFj/L+StSsuVxamcKCzFMK2R1IOTLo3MF2I/aFTs2m5RHzLTf0R0rU5Ua1Tcl/JsvLb0HynRkuTjqdIX2xrc95gEg3L/IxrSboB0h4G26ZZ1j82OdNnyvr0wHqnHN8BHR0urNRDj4bhWGXDZq3IsK4kODSEm65PTIHWYkD0Obh4VyoT9tan6G2Xcp8PZXlDQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=qigG5kUcxAwEk9WKAMwLV1yzRRj89M0MJtvmmZxb0iM=; b=r4sN/v6UzCTCH+TTzJvQjk2A7uM5dockNIcyuG81N8Srq7eRs4RocDVJZLMtNeXE4HfZAz6iCIRmXDSeEI58YeU5+zn9PhwyzxmBPlv1UOKAz3Ve4v0uNNtSIhCwWvP6N1W3CJhJNpQAXHiHUQ51dw1dTvxfCn5kvduvLNK3V+U= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM0PR04MB6452.eurprd04.prod.outlook.com (2603:10a6:208:16d::21) by DB9PR04MB8396.eurprd04.prod.outlook.com (2603:10a6:10:24a::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6813.25; Sat, 23 Sep 2023 13:49:24 +0000 Received: from AM0PR04MB6452.eurprd04.prod.outlook.com ([fe80::568a:57ee:35b5:e454]) by AM0PR04MB6452.eurprd04.prod.outlook.com ([fe80::568a:57ee:35b5:e454%3]) with mapi id 15.20.6813.024; Sat, 23 Sep 2023 13:49:24 +0000 From: Vladimir Oltean To: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org Cc: "Russell King (Oracle)" , Heiner Kallweit , Andrew Lunn , Florian Fainelli , Madalin Bucur , Ioana Ciornei , Camelia Groza , Li Yang , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Sean Anderson , Maxime Chevallier , Vinod Koul , Kishon Vijay Abraham I Subject: [RFC PATCH v2 net-next 02/15] phy: introduce the PHY_MODE_ETHTOOL mode for phy_set_mode_ext() Date: Sat, 23 Sep 2023 16:48:51 +0300 Message-Id: <20230923134904.3627402-3-vladimir.oltean@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230923134904.3627402-1-vladimir.oltean@nxp.com> References: <20230923134904.3627402-1-vladimir.oltean@nxp.com> X-ClientProxiedBy: FR3P281CA0165.DEUP281.PROD.OUTLOOK.COM (2603:10a6:d10:a2::10) To AM0PR04MB6452.eurprd04.prod.outlook.com (2603:10a6:208:16d::21) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM0PR04MB6452:EE_|DB9PR04MB8396:EE_ X-MS-Office365-Filtering-Correlation-Id: 2ebe1571-e53a-45ba-34d9-08dbbc3be58f X-LD-Processed: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635,ExtAddr X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR04MB6452.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230031)(366004)(39860400002)(346002)(376002)(136003)(396003)(230922051799003)(186009)(1800799009)(451199024)(6512007)(52116002)(6506007)(6486002)(6666004)(83380400001)(86362001)(38350700002)(38100700002)(36756003)(1076003)(2616005)(26005)(2906002)(19627235002)(41300700001)(316002)(7416002)(44832011)(54906003)(66946007)(66476007)(66556008)(478600001)(8936002)(4326008)(8676002)(5660300002);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2ebe1571-e53a-45ba-34d9-08dbbc3be58f X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB6452.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2023 13:49:24.5258 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: WN0zbgKSr7IbtrN+B24lY/U491xxOPXwrPEqQUNFdnHgRDYkvpTyHqKnjrUUOkN9AkUAn/neHovZ9Xen8ghhxQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR04MB8396 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230923_064935_273973_5C4F1010 X-CRM114-Status: GOOD ( 13.39 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org In networking, we have 2 distinct data types: - phy_interface_t describes the link between a MAC (or MAC-side PCS) and an attached PHY or SFP cage - enum ethtool_link_mode_bit_indices describes the link between a local PHY and a remote PHY (for example, gigabit RJ45 twisted copper pairs) Currently, phy_set_mode_ext(PHY_MODE_ETHERNET) takes arguments of the phy_interface_t type, and there is no way to pass an argument of the enum ethtool_link_mode_bit_indices type. The new PHY_MODE_ETHTOOL intends to address that. It is true that there is currently some overlap between these data types, namely: phy_interface_t enum ethtool_link_mode_bit_indices ----------------------------------------------------------------- PHY_INTERFACE_MODE_10GKR ETHTOOL_LINK_MODE_10000baseKR_Full_BIT PHY_INTERFACE_MODE_1000BASEKX ETHTOOL_LINK_MODE_1000baseKX_Full_BIT but those overlaps were deemed to be mistakes, and PHY-to-PHY link modes should only be added to ethtool_link_mode_bit_indices going forward. Thus, I believe that the distinction is necessary, rather than hacking more improper PHY modes. Some of the PHY-to-PHY link modes which may be added in the future (to ethtool_link_mode_bit_indices and not to phy_interface_t) are: ETHTOOL_LINK_MODE_100000baseKP4_Full_BIT ETHTOOL_LINK_MODE_100000baseCR10_Full_BIT ETHTOOL_LINK_MODE_25000baseKR_S_Full_BIT ETHTOOL_LINK_MODE_25000baseCR_S_Full_BIT One user of PHY_MODE_ETHTOOL will be the MTIP backplane AN/LT + Lynx SerDes PHY combo, where the backplane autoneg protocol (IEEE 802.3 clause 73) selects the operating PHY-to-PHY link mode. There are electrical differences between the PHY-to-PHY backplane link modes (like ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) and their non-backplane counterparts (like PHY_INTERFACE_MODE_10GBASER), namely the number of TX signal equalization taps and their configurability. This further justifies distinguishing between them in the generic PHY API. Signed-off-by: Vladimir Oltean --- v1->v2: rename PHY_MODE_ETHERNET_PHY to PHY_MODE_ETHTOOL at Russell's suggestion include/linux/phy/phy.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 6be348f1fa0e..72ef4afcda81 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -39,6 +39,7 @@ enum phy_mode { PHY_MODE_UFS_HS_B, PHY_MODE_PCIE, PHY_MODE_ETHERNET, + PHY_MODE_ETHTOOL, PHY_MODE_MIPI_DPHY, PHY_MODE_SATA, PHY_MODE_LVDS, @@ -52,7 +53,7 @@ enum phy_media { }; enum phy_status_type { - /* Valid for PHY_MODE_ETHERNET */ + /* Valid for PHY_MODE_ETHERNET and PHY_MODE_ETHTOOL */ PHY_STATUS_CDR_LOCK, };