Re: [PATCH RFC net-next 2/3] net: dsa: mxl862xx: add SMDIO clause-22 register access

From: Andrew Lunn

Date: Wed Jul 08 2026 - 13:24:46 EST


On Tue, Jul 07, 2026 at 04:16:07PM +0200, Daniel Golle wrote:
> Add mxl862xx_smdio_read() and mxl862xx_smdio_write() for clause-22
> SMDIO register access. MCUboot rescue mode only exposes clause-22
> registers; the existing clause-45 MMD interface is unavailable during
> firmware transfer. The MDIO bus lock is held per-transaction (not
> across polls) so that SB PDI polling during flash erase does not
> starve other MDIO users.

What other MDIO users are there? It sounds like once the switch is in
rescue mode, switch management is dead. So how can there be users?

Andrew