Re: [PATCH net-next v2 1/3] net: macb: fix SGMII with inband aneg disabled

[Charles Perry]

On Thu, Mar 05, 2026 at 09:42:19AM +0000, Conor Dooley wrote:
> On Wed, Mar 04, 2026 at 09:37:23AM -0800, Charles Perry wrote:
> > On Wed, Mar 04, 2026 at 04:23:30PM +0000, Conor Dooley wrote:
> > 
> > Are you able to check register 23, bit 13 of your PHY by any chance? Maybe
> > with the mdio/mii commands in U-Boot if you have that.
> 
> "mii read addr 23" returns 0660 for both PHYs in U-Boot.

Oh, I think you fell into a trap of U-Boot's mii command.

The arguments are always in hex even if you dont prepend "0x".

What "mii read 8 23" did is most likely read register 0x23, masked with
0x1f because clause 22 has only 32 registers. So it read register 0x3 which
is the device identifier 2 register: 0x0660.

The exact command should be "mii read 8 0x17", "mii read 9 0x17".

Sorry for that.

Thanks,
Charles