Re: [PATCH net v1] net: phy: motorcomm: yt8821: disable MDIO broadcast address 0
From: Russell King (Oracle)
Date: Sun Feb 22 2026 - 03:29:32 EST
On Sun, Feb 22, 2026 at 05:22:55AM +0100, Jakub Vaněk wrote:
> I had hoped this would not happen on the Cudy router. The MediaTek
> Ethernet subsystem driver uses of_mdiobus_register(), so PHY address 0
> should not be probed unless it is explicitly described in the device
> tree. That said, I agree that with mdiobus_register() this would still
> be an issue.
>
> I was also hoping that moving the internal PHY would provide more
> flexibility in the device tree description of the YT8821. If the
> workaround were implemented in U-Boot by writing YT8821 MDIO registers
> at boot time, Linux would not be able to assert the YT8821 reset pin
> without losing that workaround.
Why would you want to assert the reset pin?
--
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