diff options
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-power | 32 | ||||
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-power-wilco | 30 |
2 files changed, 62 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-power b/Documentation/ABI/testing/sysfs-class-power index b77e30b9014e..27edc06e2495 100644 --- a/Documentation/ABI/testing/sysfs-class-power +++ b/Documentation/ABI/testing/sysfs-class-power @@ -376,10 +376,42 @@ Description: supply. Normally this is configured based on the type of connection made (e.g. A configured SDP should output a maximum of 500mA so the input current limit is set to the same value). + Use preferably input_power_limit, and for problems that can be + solved using power limit use input_current_limit. Access: Read, Write Valid values: Represented in microamps +What: /sys/class/power_supply/<supply_name>/input_voltage_limit +Date: May 2019 +Contact: linux-pm@vger.kernel.org +Description: + This entry configures the incoming VBUS voltage limit currently + set in the supply. Normally this is configured based on + system-level knowledge or user input (e.g. This is part of the + Pixel C's thermal management strategy to effectively limit the + input power to 5V when the screen is on to meet Google's skin + temperature targets). Note that this feature should not be + used for safety critical things. + Use preferably input_power_limit, and for problems that can be + solved using power limit use input_voltage_limit. + + Access: Read, Write + Valid values: Represented in microvolts + +What: /sys/class/power_supply/<supply_name>/input_power_limit +Date: May 2019 +Contact: linux-pm@vger.kernel.org +Description: + This entry configures the incoming power limit currently set + in the supply. Normally this is configured based on + system-level knowledge or user input. Use preferably this + feature to limit the incoming power and use current/voltage + limit only for problems that can be solved using power limit. + + Access: Read, Write + Valid values: Represented in microwatts + What: /sys/class/power_supply/<supply_name>/online, Date: May 2007 Contact: linux-pm@vger.kernel.org diff --git a/Documentation/ABI/testing/sysfs-class-power-wilco b/Documentation/ABI/testing/sysfs-class-power-wilco new file mode 100644 index 000000000000..da1d6ffe5e3c --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-power-wilco @@ -0,0 +1,30 @@ +What: /sys/class/power_supply/wilco-charger/charge_type +Date: April 2019 +KernelVersion: 5.2 +Description: + What charging algorithm to use: + + Standard: Fully charges battery at a standard rate. + Adaptive: Battery settings adaptively optimized based on + typical battery usage pattern. + Fast: Battery charges over a shorter period. + Trickle: Extends battery lifespan, intended for users who + primarily use their Chromebook while connected to AC. + Custom: A low and high threshold percentage is specified. + Charging begins when level drops below + charge_control_start_threshold, and ceases when + level is above charge_control_end_threshold. + +What: /sys/class/power_supply/wilco-charger/charge_control_start_threshold +Date: April 2019 +KernelVersion: 5.2 +Description: + Used when charge_type="Custom", as described above. Measured in + percentages. The valid range is [50, 95]. + +What: /sys/class/power_supply/wilco-charger/charge_control_end_threshold +Date: April 2019 +KernelVersion: 5.2 +Description: + Used when charge_type="Custom", as described above. Measured in + percentages. The valid range is [55, 100]. |