| commit | 4d81e2a26ffd966226be4b4c40df541d337fda69 | [log] [tgz] |
|---|---|---|
| author | Michael Brooks <michaelbrooks@google.com> | Wed Jul 15 08:40:49 2020 -0700 |
| committer | Michael Brooks <michaelbrooks@google.com> | Tue Aug 04 19:56:58 2020 +0000 |
| tree | a4545830df0b7ecfd2b92a23031f15e181ae1f0b | |
| parent | 07c7d3ff27c9039754c242edf8e9a8ffb32cd0af [diff] |
Add power control for Apex Creates a character device (apex_power) that when open/closed toggles the PCIe bus as well as the Apex regulator. This can be used to signficantly reduce idle power when the TPU is idle. Note that this is disabled by default in the phanbell device tree. To enable the apex-power status must be changed to "okay" and for full power savings apex-regulators should remove the always-on property. Change-Id: I906373b5edf481820b692847ebaba57943b85897