diff options
| author | Badhri Jagan Sridharan <badhri@google.com> | 2025-10-15 04:30:14 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-10-22 10:58:31 +0200 |
| commit | b4528e1dbe679bd9c0457bd263456a60859f8161 (patch) | |
| tree | f7f9f5a05f83ddc95dbd716b324f9e3ce0020061 /Documentation | |
| parent | f82890c98f3e3fd61983e9021354c632ecd47427 (diff) | |
usb: typec: pd: Register SPR AVS caps with usb_power_delivery class
usb_power_delivery class will now display AVS cap as
`spr_adjustable_voltage_supply`. `maximum_current_9V_to_15V` and
`maximum_current_15V_to_20V` shows the corresponding current limits
in mA. `peak_current` follows the same convention as fixed_supply
where the value reported in the capabilities message is displayed
as is.
Sample output with an SPR AVS capable PD charger:
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/maximum_current_9V_to_15V
4000mA
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/maximum_current_15V_to_20V
3350mA
$cat /sys/class/usb_power_delivery/pd1/source-capabilities/5:spr_adjustable_voltage_supply/peak_current
0
Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://patch.msgid.link/20251015043017.3382908-2-badhri@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-usb_power_delivery | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-usb_power_delivery b/Documentation/ABI/testing/sysfs-class-usb_power_delivery index 61d233c320ea..c754458a527e 100644 --- a/Documentation/ABI/testing/sysfs-class-usb_power_delivery +++ b/Documentation/ABI/testing/sysfs-class-usb_power_delivery @@ -254,3 +254,31 @@ 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. + +Standard Power Range (SPR) Adjustable Voltage Supplies + +What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply +Date: Oct 2025 +Contact: Badhri Jagan Sridharan <badhri@google.com> +Description: + Adjustable Voltage Supply (AVS) Augmented PDO (APDO). + +What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/maximum_current_9V_to_15V +Date: Oct 2025 +Contact: Badhri Jagan Sridharan <badhri@google.com> +Description: + Maximum Current for 9V to 15V range in milliamperes. + +What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/maximum_current_15V_to_20V +Date: Oct 2025 +Contact: Badhri Jagan Sridharan <badhri@google.com> +Description: + Maximum Current for greater than 15V till 20V range in + milliamperes. + +What: /sys/class/usb_power_delivery/.../<capability>/<position>:spr_adjustable_voltage_supply/peak_current +Date: Oct 2025 +Contact: Badhri Jagan Sridharan <badhri@google.com> +Description: + This file shows the value of the Adjustable Voltage Supply Peak Current + Capability field. |