Messages in this thread |  | | Date | Tue, 2 Dec 2025 13:38:21 +0100 | | Subject | Re: [PATCH net-next v2 1/1] net: mdio: reset PHY before attempting to access ID register | | From | Paolo Abeni <> |
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On 11/28/25 2:53 PM, Buday Csaba wrote: > When the ID of an Ethernet PHY is not provided by the 'compatible' > string in the device tree, its actual ID is read via the MDIO bus. > For some PHYs this could be unsafe, since a hard reset may be > necessary to safely access the MDIO registers. > > Add a fallback mechanism for such devices: when reading the ID > fails, the reset will be asserted, and the ID read is retried. > > This allows such devices to be used with an autodetected ID. > > The fallback mechanism is activated in the error handling path, and > the return code of fwnode_mdiobus_register_phy() is unaltered, except > when the reset fails with -EPROBE_DEFER, which is propagated to the > caller. > > Signed-off-by: Buday Csaba <buday.csaba@prolan.hu>
IMHO this deserves an explicit ack from phy maintainers. Unless such ack is going to land on the ML very soon, I suggest to defer this patch to the next cycle, as Jakub is wrapping the net-next PR.
Thanks,
Paolo
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