Messages in this thread |  | | From | Alexandru Ardelean <> | Subject | [PATCH 0/4] ethtool: implement Energy Detect Powerdown support via phy-tunable | Date | Tue, 3 Sep 2019 19:06:22 +0300 |
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This patch series is actually 2 series in 1.
First 2 patches implement the kernel support for controlling Energy Detect Powerdown support via phy-tunable, and the next 2 patches implement the ethtool user-space control. Hopefully, this combination of 2 series is an acceptable approach; if not, I am fine to re-update it based on feedback.
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.
-- 2.20.1
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