| What: /sys/class/usb_power_delivery |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Directory for USB Power Delivery devices. |
| |
| What: /sys/class/usb_power_delivery/.../revision |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| File showing the USB Power Delivery Specification Revision used |
| in communication. |
| |
| What: /sys/class/usb_power_delivery/.../version |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This is an optional attribute file showing the version of the |
| specific revision of the USB Power Delivery Specification. In |
| most cases the specification version is not known and the file |
| is not available. |
| |
| What: /sys/class/usb_power_delivery/.../source-capabilities |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The source capabilities message "Source_Capabilities" contains a |
| set of Power Data Objects (PDO), each representing a type of |
| power supply. The order of the PDO objects is defined in the USB |
| Power Delivery Specification. Each PDO - power supply - will |
| have its own device, and the PDO device name will start with the |
| object position number as the first character followed by the |
| power supply type name (":" as delimiter). |
| |
| /sys/class/usb_power_delivery/.../source_capabilities/<position>:<type> |
| |
| What: /sys/class/usb_power_delivery/.../sink-capabilities |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The sink capability message "Sink_Capabilities" contains a set |
| of Power Data Objects (PDO) just like with source capabilities, |
| but instead of describing the power capabilities, these objects |
| describe the power requirements. |
| |
| The order of the objects in the sink capability message is the |
| same as with the source capabilities message. |
| |
| Fixed Supplies |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:fixed_supply |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Devices containing the attributes (the bit fields) defined for |
| Fixed Supplies. |
| |
| The device "1:fixed_supply" is special. USB Power Delivery |
| Specification dictates that the first PDO (at object position |
| 1), and the only mandatory PDO, is always the vSafe5V Fixed |
| Supply Object. vSafe5V Object has additional fields defined for |
| it that the other Fixed Supply Objects do not have and that are |
| related to the USB capabilities rather than power capabilities. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/dual_role_power |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file contains boolean value that tells does the device |
| support both source and sink power roles. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/usb_suspend_supported |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file shows the value of the USB Suspend Supported bit in |
| vSafe5V Fixed Supply Object. If the bit is set then the device |
| will follow the USB 2.0 and USB 3.2 rules for suspend and |
| resume. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/unconstrained_power |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file shows the value of the Unconstrained Power bit in |
| vSafe5V Fixed Supply Object. The bit is set when an external |
| source of power, powerful enough to power the entire system on |
| its own, is available for the device. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/usb_communication_capable |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file shows the value of the USB Communication Capable bit in |
| vSafe5V Fixed Supply Object. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/dual_role_data |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file shows the value of the Dual-Role Data bit in vSafe5V |
| Fixed Supply Object. Dual role data means ability act as both |
| USB host and USB device. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/1:fixed_supply/unchunked_extended_messages_supported |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file shows the value of the Unchunked Extended Messages |
| Supported bit in vSafe5V Fixed Supply Object. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:fixed_supply/voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The voltage the supply supports in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:fixed_supply/maximum_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum current of the fixed source supply in milliamperes. |
| |
| What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:fixed_supply/operational_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Operational current of the sink in milliamperes. |
| |
| What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:fixed_supply/fast_role_swap_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| This file contains the value of the "Fast Role Swap USB Type-C |
| Current" field that tells the current level the sink requires |
| after a Fast Role Swap. |
| 0 - Fast Swap not supported" |
| 1 - Default USB Power" |
| 2 - 1.5A@5V" |
| 3 - 3.0A@5V" |
| |
| Variable Supplies |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Variable Power Supply PDO. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply/maximum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:variable_supply/minimum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Minimum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:variable_supply/maximum_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The maximum current in milliamperes that the source can supply |
| at the given Voltage range. |
| |
| What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:variable_supply/operational_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The operational current in milliamperes that the sink requires |
| at the given Voltage range. |
| |
| Battery Supplies |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Battery PDO. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery/maximum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:battery/minimum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Minimum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:battery/maximum_power |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum allowable Power in milliwatts. |
| |
| What: /sys/class/usb_power_delivery/.../sink-capabilities/<position>:battery/operational_power |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The operational power that the sink requires at the given |
| voltage range. |
| |
| Standard Power Range (SPR) Programmable Power Supplies |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Programmable Power Supply (PPS) Augmented PDO (APDO). |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/maximum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/minimum_voltage |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Minimum Voltage in millivolts. |
| |
| What: /sys/class/usb_power_delivery/.../<capability>/<position>:programmable_supply/maximum_current |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| Maximum Current in milliamperes. |
| |
| What: /sys/class/usb_power_delivery/.../source-capabilities/<position>:programmable_supply/pps_power_limited |
| Date: May 2022 |
| Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> |
| Description: |
| The PPS Power Limited bit indicates whether or not the source |
| supply will exceed the rated output power if requested. |
