This changeset proposes a new control for PHY tunable to control Energy Detect Power Down.
The `phy_tunable_id` has been named `ETHTOOL_PHY_EDPD` since it looks like this feature is common across other PHYs (like EEE), and defining `ETHTOOL_PHY_ENERGY_DETECT_POWER_DOWN` seems too long. The way EDPD works, is that the RX block is put to a lower power mode, except for link-pulse detection circuits. The TX block is also put to low power mode, but the PHY wakes-up periodically to send link pulses, to avoid lock-ups in case the other side is also in EDPD mode. Currently, there are 2 PHY drivers that look like they could use this new PHY tunable feature: the `adin` && `micrel` PHYs. This series updates only the `adin` PHY driver to support this new feature, as this chip has been tested. A change for `micrel` can be proposed after a discussion of the PHY-tunable API is resolved. Alexandru Ardelean (2): ethtool: implement Energy Detect Powerdown support via phy-tunable net: phy: adin: implement Energy Detect Powerdown mode via phy-tunable drivers/net/phy/adin.c | 50 ++++++++++++++++++++++++++++++++++++ include/uapi/linux/ethtool.h | 5 ++++ net/core/ethtool.c | 6 +++++ 3 files changed, 61 insertions(+) Changelog v1 -> v2: * initial series was made up of 2 sub-series: 1 for kernel & 1 for ethtool in userspace; v2 contains only the kernel series -- 2.20.1