Date:   Fri, 27 Jan 2023 15:43:51 +0200
From:   Vladimir Oltean <vladimir.oltean@nxp.com>
To:     Maxime Chevallier <maxime.chevallier@bootlin.com>
Cc:     "David S . Miller" <davem@davemloft.net>,
        Jakub Kicinski <kuba@kernel.org>,
        Eric Dumazet <edumazet@google.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Andrew Lunn <andrew@lunn.ch>,
        Alexandre Belloni <alexandre.belloni@bootlin.com>,
        Claudiu Manoil <claudiu.manoil@nxp.com>,
        Paolo Abeni <pabeni@redhat.com>,
        Ioana Ciornei <ioana.ciornei@nxp.com>,
        Madalin Bucur <madalin.bucur@nxp.com>,
        Heiner Kallweit <hkallweit1@gmail.com>,
        Russell King <linux@armlinux.org.uk>,
        UNGLinuxDriver@microchip.com, netdev@vger.kernel.org,
        linux-kernel@vger.kernel.org, thomas.petazzoni@bootlin.com
Subject: Re: [PATCH net-next] net: pcs: pcs-lynx: remove
 lynx_get_mdio_device() and refactor cleanup
Message-ID: <20230127134351.xlz4wqrubfnvmecd@skbuf>
References: <20230127134031.156143-1-maxime.chevallier@bootlin.com>
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230127134031.156143-1-maxime.chevallier@bootlin.com>
MIME-Version: 1.0
X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1
X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?ABu9gHQ1T5qq/WMHfCXPxXdscOr5koYuh7GC5QTVsqJdmv1MMMOO/th8NAVQ?=
 =?us-ascii?Q?EnTAThtZklEmRkxJFsvSeN/eWN4MmANiWJKi/mMncDKTUbM5egRqk1Gjb7zK?=
 =?us-ascii?Q?YHOmoCgsxtLhrOCoJEaQFE3aZXt+y+elEkquX/JSXG63QpOZpneIA0itmpTh?=
 =?us-ascii?Q?WURbaOYKniH2DE2yrJ2AOuSZSwfSWZGdeFc0ttFLtnbFc5oEVngNi+pfZlnj?=
 =?us-ascii?Q?k0r34bnApSlLsGs3O/yfpNU4wc2bozWXIAKmvCf0lCAk3duM4tqlVLtyuWET?=
 =?us-ascii?Q?p7wYxbenu7nyZci7mTkJCTZy+0h/j1rnMfXK1OSdDwDxEGRSR8oCvba9N7Vi?=
 =?us-ascii?Q?mSBSdTtrdUz90lF/lkTynaiLdXrws0I2SnYfoiMrxG2bQF5yOiFNm8HmZHqe?=
 =?us-ascii?Q?UlZ+A1HQ2ys3ZAqtCOKFp6y4TFUdTeVNKoTzkKwWUfC9Of8XS1novdSbDTGa?=
 =?us-ascii?Q?kIJUqaqTKIEBZhTWRQuEnGEEXS3wM283eeBvRxPO1ckK8lxTF5ij0KezlpCV?=
 =?us-ascii?Q?316lV5J29kgQoJ5PmUHIZCcTbLmoLRvpm+fPW5U21HEtKq9ULcxMLdtf4qdf?=
 =?us-ascii?Q?hebyE7KeG2vEcp08WMsp9gjJcudKXxRFBwAuAAPY1QA6n86SSejNPmi2EdxI?=
 =?us-ascii?Q?jL1zhvgCyelrALFstVTJf6qJ2W9WDpKeHACmvyOZINq+NudKpEy1lw+domWf?=
 =?us-ascii?Q?XI1rsFIa657XepR+fK7syhM8NPFW1Mt4s0/yh4xNdcGELiCFZegy2Nu9I8lI?=
 =?us-ascii?Q?xW/TbHQrKqpG4DhCWC7lYhbZznmBZGhXEJS+aQVEESVt3/NNvPOzsiS2qxgE?=
 =?us-ascii?Q?1r19rFISWAHeedLa8wbeyvA2u8zihyPBAsCj93xtyZplD35ixx0mMrGB21xB?=
 =?us-ascii?Q?7mpH6wdYsy8fJbB5ifGZofhHnrUGaTyC5Ifa6sEZKExsZB9bo/qudaTcvCUM?=
 =?us-ascii?Q?Oza2ExA829pDKyQiZfOLUaFb9gPFTi458rEoUZfOudIOXuVC2arloeHeqAEb?=
 =?us-ascii?Q?vwa3V4kLipc/vjXTEBkiI4to05ss8X+wVuvh3waqhC6yQczOkq9CsAQdC5p1?=
 =?us-ascii?Q?5IA048XLQXF1s3oBmTtCZSgRVMb28NMkBI/7mAeP1wLx1f9RmsKdxJmC7ISY?=
 =?us-ascii?Q?2uroKhpY6W1fJp9JxmdJDsswImrXAcfukROptrf0mCVDK2tCyNGE5OyXHNN0?=
 =?us-ascii?Q?up8/ttr51FwXeVn/MDMQLPJsuAwCgbbdlB4oOZz99jZebHdFTYJQN0n/vTig?=
 =?us-ascii?Q?lKbsocp3rYrg+jxC9MS2N+WSVNBXmZwARkZ5bQr9UbNkTUZ8ifvma/k8idJn?=
 =?us-ascii?Q?BuNPDCwMWklCmP+lnNRUkReDuO7QxiKb2tyLdCuHwPxPSTeBV0hWO5eoU6rx?=
 =?us-ascii?Q?W9sl6q7HkzlzORqbyTZ65M+rE2uII4J2gk1sJXjixqEwVmS77rJm2wnqbXX0?=
 =?us-ascii?Q?p6x9evLTllxwkKegvNqgKs5OBRoiVo/rc+xdm05fvdmWYWF84LoIB7Wp2Xwt?=
 =?us-ascii?Q?Mkvrk3bzUxkadcDfzjPlSTU9IudO13wYk45fUj7xdddPal6OQsvdSL7hAuM2?=
 =?us-ascii?Q?oR8XuWl+IoMI5/jcg26g/+/hVupIK3Tl1RzlwXXnePth26caIPpVrK0/t4mx?=
 =?us-ascii?Q?UQ=3D=3D?=
X-OriginatorOrg: nxp.com
X-MS-Exchange-CrossTenant-Network-Message-Id: a05466c5-e813-48d1-1a5a-08db006c88a4
X-MS-Exchange-CrossTenant-AuthSource: VI1PR04MB5136.eurprd04.prod.outlook.com
X-MS-Exchange-CrossTenant-AuthAs: Internal
X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 Jan 2023 13:43:55.5105
 (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: i59cIxTtufJIRKNhHaEf4ioj1dnam/wVKt7JbOIjAvd6ZRpKK65DewkSR8GQTaV8GJNp9+O04OuKxR4p1DrReA==
X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM9PR04MB8210
Precedence: bulk
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On Fri, Jan 27, 2023 at 02:40:30PM +0100, Maxime Chevallier wrote:
> One of the main difference is that the TSE pcs is memory-mapped, and
> the merge into pcs-lynx would first require a conversion of pcs-lynx
> to regmap.

I suppose sooner or later you'll want to convert stuff like
phylink_mii_c22_pcs_get_state() to regmap too?

Can't you create an MDIO bus for the TSE PCS which translates MDIO
reads/writes to MMIO accesses?