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Wed, 27 Nov 2019 18:31:54 +0000 From: To: , CC: , , , , , , , , Subject: Re: [PATCH 2/3] net: macb: add support for C45 MDIO read/write Thread-Topic: [PATCH 2/3] net: macb: add support for C45 MDIO read/write Thread-Index: AQHVpVDxAflWsMDSIE2xhPpOe+lx7Q== Date: Wed, 27 Nov 2019 18:31:54 +0000 Message-ID: <19694e5a-17df-608f-5db7-5da288e5e7cd@microchip.com> References: <1574759354-102696-1-git-send-email-mparab@cadence.com> <1574759389-103118-1-git-send-email-mparab@cadence.com> <20191126143717.GP6602@lunn.ch> In-Reply-To: <20191126143717.GP6602@lunn.ch> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: PR0P264CA0158.FRAP264.PROD.OUTLOOK.COM (2603:10a6:100:1b::26) To SN6PR11MB2830.namprd11.prod.outlook.com (2603:10b6:805:5b::21) x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [2a01:cb1c:a97:7600:4101:ade1:25ee:c9ca] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 9e21f681-a5f2-4e86-7263-08d773681393 x-ms-traffictypediagnostic: SN6PR11MB3024: x-microsoft-antispam-prvs: x-ms-oob-tlc-oobclassifiers: OLM:8273; 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charset="Windows-1252" Content-ID: Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-MS-Exchange-CrossTenant-Network-Message-Id: 9e21f681-a5f2-4e86-7263-08d773681393 X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Nov 2019 18:31:54.1825 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 3f4057f3-b418-4d4e-ba84-d55b4e897d88 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: emNRPWA8Xz9s3BV/otf569r9QdM2z9YAaZID2L74s48DLJ9KzYZz3rxpsq5ZLu55jwWXol2GPFSclTlprhhXHXp4fe4/JXZ19dRj6/Le39M= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN6PR11MB3024 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 26/11/2019 at 15:37, Andrew Lunn wrote: > On Tue, Nov 26, 2019 at 09:09:49AM +0000, Milind Parab wrote: >> This patch modify MDIO read/write functions to support >> communication with C45 PHY. >=20 > I think i've asked this before, at least once, but you have not added > it to the commit messages. Do all generations of the macb support C45? For what I can tell from the different IP revisions that we implemented=20 throughout the years in Atmel then Microchip products (back to=20 at91rm9200 and at91sam9263), it seems yes. The "PHY Maintenance Register" "MACB_MAN_*" was always present with the=20 same bits 32-28 layout (with somehow different names). But definitively we would need to hear that from Cadence itself which=20 would be far better. [..] Best regards, --=20 Nicolas Ferre