Hi David, I use a special 100Base-T1 phy (NXP TJA1100 [1]) that has some features like:
- enabling/disabling test modes - fault detection - switching managed/autonomous mode - signal quality indication - ... I already implemented the support of the features with the ethtool --get/set-phy-tunables features by adding ethtool_phy_tunables: ETHTOOL_PHY_TEST_MODE ETHTOOL_PHY_FAULT_DETECTION ETHTOOL_PHY_MANAGED_MODE ETHTOOL_PHY_SIGNAL_QUALITY Before posting my series I wanted to ensure that this is the preferred interface for those options. I found a series from 2016 [2] that implements the userspace part for the loopback feature of some phys, that did not get mainline so far which makes me wonder if ethtool is still the way to go. [1] https://www.nxp.com/docs/en/data-sheet/TJA1100.pdf [2] https://www.spinics.net/lists/netdev/msg406614.html Thanks, Michael -- Pengutronix e.K. | | Industrial Linux Solutions | http://www.pengutronix.de/ | Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 | Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
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