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Mon, 20 Jan 2020 10:31:17 +0000 Received: from BN8PR12MB3266.namprd12.prod.outlook.com ([fe80::c62:b247:6963:9da2]) by BN8PR12MB3266.namprd12.prod.outlook.com ([fe80::c62:b247:6963:9da2%6]) with mapi id 15.20.2644.024; Mon, 20 Jan 2020 10:31:17 +0000 From: Jose Abreu To: Russell King - ARM Linux admin CC: Andrew Lunn , "netdev@vger.kernel.org" , Joao Pinto , Florian Fainelli , Heiner Kallweit , "David S. Miller" , "linux-kernel@vger.kernel.org" Subject: RE: [RFC net-next] net: phy: Add basic support for Synopsys XPCS using a PHY driver Thread-Topic: [RFC net-next] net: phy: Add basic support for Synopsys XPCS using a PHY driver Thread-Index: AQHVyhMHPh1TkUf6pU+JUVzLFdFzk6fomWeAgAAAjSCAAAp/gIAKvyCA Date: Mon, 20 Jan 2020 10:31:17 +0000 Message-ID: References: <4953fc69a26bee930bccdeb612f1ce740a4294df.1578921062.git.Jose.Abreu@synopsys.com> <20200113133845.GD11788@lunn.ch> <20200113141817.GN25745@shell.armlinux.org.uk> In-Reply-To: <20200113141817.GN25745@shell.armlinux.org.uk> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: authentication-results: spf=none (sender IP is ) smtp.mailfrom=joabreu@synopsys.com; x-originating-ip: [83.174.63.141] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 7f2bacdf-4ee2-4cc0-5d08-08d79d93e1f8 x-ms-traffictypediagnostic: BN8PR12MB2994: x-ms-exchange-transport-forked: True x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8882; x-forefront-prvs: 0288CD37D9 x-forefront-antispam-report: SFV:NSPM;SFS:(10019020)(346002)(396003)(376002)(39860400002)(136003)(366004)(199004)(189003)(6506007)(4744005)(81166006)(6916009)(81156014)(54906003)(8676002)(5660300002)(52536014)(71200400001)(316002)(86362001)(7696005)(478600001)(2906002)(186003)(33656002)(66556008)(66476007)(66446008)(55016002)(64756008)(76116006)(9686003)(26005)(4326008)(8936002)(66946007);DIR:OUT;SFP:1102;SCL:1;SRVR:BN8PR12MB2994;H:BN8PR12MB3266.namprd12.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: synopsys.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: E27O1xTYa5GY+FelrI6rv7iBctfL+eFmaDBT10tX8QrHFgHKjkcaY2gwLzsoI3qwhmVLswuoProTQPex4JulUDzJOSQxG9IYWKM1ehI3LCmB82J3jWCRvLNBXvZAgSw5syEAFW+/aHpw1H2NHJLuB4jSKpz/1C5I973sleU2IwzKULWJqiR1sdrNQHlcHnAdWPP+XKOaOHB8YEpIIexbRv6d9SIug1sGKTOkqF2wyPcKNA+7BdOGIo+5VNzm5qZOi0X+frqkTnSwKc6CPmSi0T+KOTPEiBKEwUMl822NkKF591Jd+Ue+EdzYGgEHWfECxbK9aAxeW5D2U3BhKqL5whB/7uVZCaK1Oye2A6GgjsYtjVe2wSNOpfpTd3iknr2Gb7U+9dq7bfB/jGy0KTd1zuEX2e5tv6Fzh1dP+CgTLA5NGhu7GR+QPFoYbK1jFg5l Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 7f2bacdf-4ee2-4cc0-5d08-08d79d93e1f8 X-MS-Exchange-CrossTenant-originalarrivaltime: 20 Jan 2020 10:31:17.1299 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: c33c9f88-1eb7-4099-9700-16013fd9e8aa X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: rcyH5Cf2tvH6hh3GpMjeQD0iPd793c3o9S7d3pWK7vG8VNRDHe+fFd4nB6wB0QDTC2Dh9mRw96/IkFiRB8geaQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR12MB2994 X-OriginatorOrg: synopsys.com Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Russell King - ARM Linux admin Date: Jan/13/2020, 14:18:17 (UTC+00:00) > I've recently suggested a patch to phylink to add a generic helper to > read the state from a generic 802.3 clause 37 PCS, but I guess that > won't be sufficient for an XPCS. However, it should give some clues > if you're intending to use phylink. So, I think for my particular setup (that has no "real" PHY) we can have=20 something like this in SW PoV: stmmac -> xpcs -> SW-PHY / Fixed PHY - stmmac + xpcs state would be handled by phylink (MAC side) - SW-PHY / Fixed PHY state would be handled by phylink (PHY side) This would need updates for Fixed PHY to support >1G speeds. --- Thanks, Jose Miguel Abreu