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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?PCB2j98Bvu2btofvOEicU+XLmqetL5DFgSpu54oCsvQKOqhFT4yL6QG/4V1H?= =?us-ascii?Q?AXQeNdSXqA3b57tyrmSls82qHyc42iwvSp1Zp3zyFbARl8v6cqKfZ+pW1+b3?= =?us-ascii?Q?eKs1Sk6AnD+vVAgrx9F9XUI0mxRQrVB8cMpyNeqkaFwrUuCcxuWWc3P3d2VG?= =?us-ascii?Q?s3q3SC2aFmwBv3OddibmHpEliacsWJIAJ0WN5ax/bcsgsYlIJwoTxiKzrbGZ?= =?us-ascii?Q?MzGRXz+IejCAS25ajLn8xfzPxsLGMM4YE1VSBnQZNvyrfJYRdwB9Zfj66h9d?= =?us-ascii?Q?2UXliKNgxH5sW/ZiFomxyrrCNO9TxyC6W8FTMOXZPLQiS6Gtqv6QMjpr9yuE?= =?us-ascii?Q?iYnNNUUEpwUXGep+FKTLiPEB0oLbbDbG+vyLVuqlZsxG9Sf5WJx5lP6JTqx2?= =?us-ascii?Q?0C6AmTKh657H6xhSw+9JQzzesMCWiP0ZFQnePf3RGQRHHzgQspO34eP7r9HG?= =?us-ascii?Q?Anf7siC2Oz53dx8+Z9W6Q+m0Pe9G+tivlHK+/gRDgpWV5sPYpWcbHsX5vljy?= =?us-ascii?Q?igyLLX7du0IBdj1Hoo8GcQd8pATslGOuAuYQ5UnK29UjU09hpE5Yj2CkuSPq?= =?us-ascii?Q?vg5Yt7TnIxIi5P1R8w4aq39XNv5qTZd+Oc6wbGJv5f2E6jRuuibMIvLSnyWQ?= =?us-ascii?Q?l8c60sTXoVQcUB0PUVcMZMUMstG0OjuDLNavlfSB5qWIhCyK9a8gSae1xMcc?= =?us-ascii?Q?UP+h3cAajrhNm/KD5NVlci/C2Nkwl5DPlR93z/BAq7mKM9NpZ3xAyad6ppL6?= =?us-ascii?Q?pst/gpw0kzsHz6XJopHzF8UgvD/U5akVKLd98eiHDgajdP1L04vW12OzANDG?= =?us-ascii?Q?Srxa32ahMxaQUKK6lLSq02FK2jiLQtmVX6tbb86GL0T2zJBAvgVl53D/C2qh?= =?us-ascii?Q?QSM6M67o5fUe+yheUmPT5eJQ+Jp+7kC+BMjaN87JO9v0vojMO1kxPt0i0uhK?= =?us-ascii?Q?ThWmEban/NMaEnYrZVrlyDOy6xMfBNAGIVmJryzqdDNwVutFucC5CK3g9UQI?= =?us-ascii?Q?Ze5prT1+gsrNf0Mg1KgTL5sjCNsIdXrcMexce0fxhpgc35J9sRfZEHzV3qsj?= =?us-ascii?Q?AoXyiKIqxMILS0R3ZE+vIo36vJ4RN9+b+2zS4gkyBIjUVb+p5cZ6KCyEKESh?= =?us-ascii?Q?j9YJsE3V8UzeHGT+DZwaPINF93ayVEVih5evvjIBcqXRLHhrg5i++gXXzGG6?= =?us-ascii?Q?pP/T+O+Htuqvcuzot+pyBIbS6qY3oVsNAGc+mLMcv/wcBwsKPgwb4nrdLRAi?= =?us-ascii?Q?8ZSBuAn8OWIY9r0fDOAKSG1jJ9CtkZpxbtYFiCy72tuZN8vfsyaGvllb7kbO?= =?us-ascii?Q?EuNE9T4eqFAQnOmkGIUui2/VBuyL94ESapZaQtpbls90CWJhhQ1m389bbb42?= =?us-ascii?Q?UrtbL1quTKFaVD4O+UtWn/1TbAJVMIqeLQk6k4Xxfu/BGh0inF00SQ9+3GgV?= =?us-ascii?Q?4Scov21bq7n+Lemcpg3zBhoejNLQSLUbmD8joI/LPwx1FYWAt5XcVLHVUfWy?= =?us-ascii?Q?1NIq28ssedSf03bDK+BXwkHZhtWs/+lEBv92+ODdBvhD7Pzqqnn+goPklh7s?= =?us-ascii?Q?6HfbCs6ndbOtfJJnv5uyMKNNWyOj0Qp1txuxz5MAo22Drqa5OfT2D14UUNzM?= =?us-ascii?Q?9YPJnr5xAiEWe3ZwnmrEhT+4RlxLmluOd/CyNi2i+G69TO0Y29qdcHBFPrhF?= =?us-ascii?Q?s1hK7TgP5440OcmU1fFBRBflvBJ/HcgE2mP54RG2kCB1mwF9TaIqBlNsGhbT?= =?us-ascii?Q?1CBbaR6RAg=3D=3D?= X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: dc7054d6-3e9e-4db1-77fd-08deb0327e1f X-MS-Exchange-CrossTenant-AuthSource: PA4PR04MB9366.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 12 May 2026 14:26:44.6344 (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: 6ON5VV0MhAkJNE7xehmhdsFnjflYGn5Or/MJb7eL3T8c8yzZIL0qDG1g2oRldZv3gxBRlnlkvq2JQ3ivtbpq9w== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6772 On Tue, May 12, 2026 at 12:15:08AM +0200, Andrew Lunn wrote: > On Mon, May 11, 2026 at 05:04:56PM -0400, Frank Li wrote: > > According to IEEE 802.3 Clause 22.2.4.5.5 PHYAD (PHY Address), A PHY that > > is connected to the station management entity via the mechanical interface > > defined in 22.6 shall always respond to transactions addressed to PHY > > Address zero <00000>. > > Did you read 22.6? I've not seen a mechanical interface as defined in > 22.6 for at least 20 years, maybe 30 years. > > That cause does not apply in this context. Thanks, I missed understand it. This board is still alive, let me double check it. Frank > > > - ethphy: ethernet-phy { > > + ethphy: ethernet-phy@0 { > > compatible = "ethernet-phy-ieee802.3-c22"; > > + reg = <0>; > > This could very well break this board. Without a reg value, the core > will find the first PHY on the bus, at whatever address it is at. If > you hard code 0, the PHY must be at 0, otherwise it will not be found. > > Andrew