Re: [PATCH v2] net: phy: realtek: Add support for RTL9000AA/AN

On Mon, Jan 18, 2021 at 10:17:04AM +0000, ashiduka@fujitsu.com wrote:

Hi Andrew

quoted

quoted

Do you know how to switch between master/slave?

There was a patch to ethtool merged for this:

commit 558f7cc33daf82f945af432c79db40edcbe0dad0
Author: Oleksij Rempel [off-list ref]
Date:   Wed Jun 10 10:37:43 2020 +0200

    netlink: add master/slave configuration support

I know this.
--
# ./ethtool --version
ethtool version 5.10
# ./ethtool -s eth1 master-slave slave-force 
ethtool (-s): invalid value 'slave-force' for parameter 'master-slave'

The parameter is called 'forced-slave'. See the man page:

       ethtool -s devname [speed N] [duplex half|full] [port tp|aui|bnc|mii]
              [mdix auto|on|off] [autoneg on|off] [advertise N[/M] |
              advertise mode on|off ...]  [phyad N] [xcvr internal|external]
              [wol N[/M] | wol p|u|m|b|a|g|s|f|d...]
              [sopass xx:yy:zz:aa:bb:cc] [master-slave preferred-
              master|preferred-slave|forced-master|forced-slave] [msglvl
              N[/M] | msglvl type on|off ...]

sudo ethtool -s eth10 master-slave forced-master
netlink error: master/slave configuration not supported by device (offset 36)
netlink error: Operation not supported

	Andrew