diff options
Diffstat (limited to 'Documentation/ABI/testing/sysfs-class-typec')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-typec | 64 |
1 files changed, 61 insertions, 3 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-typec b/Documentation/ABI/testing/sysfs-class-typec index 619c4c67432b..8eab41e79ce6 100644 --- a/Documentation/ABI/testing/sysfs-class-typec +++ b/Documentation/ABI/testing/sysfs-class-typec @@ -147,6 +147,52 @@ Description: during Power Delivery discovery. This file remains hidden until a value greater than or equal to 0 is set by Type C port driver. +What: /sys/class/typec/<port>-partner/type +Date: December 2020 +Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> +Description: USB Power Delivery Specification defines a set of product types + for the partner devices. This file will show the product type of + the partner if it is known. Dual-role capable partners will have + both UFP and DFP product types defined, but only one that + matches the current role will be active at the time. If the + product type of the partner is not visible to the device driver, + this file will not exist. + + When the partner product type is detected, or changed with role + swap, uvevent is also raised that contains PRODUCT_TYPE=<product + type> (for example PRODUCT_TYPE=hub). + + Valid values: + + UFP / device role + ====================== ========================== + undefined - + hub PDUSB Hub + peripheral PDUSB Peripheral + psd Power Bank + ama Alternate Mode Adapter + ====================== ========================== + + DFP / host role + ====================== ========================== + undefined - + hub PDUSB Hub + host PDUSB Host + power_brick Power Brick + amc Alternate Mode Controller + ====================== ========================== + +What: /sys/class/typec/<port>-partner>/identity/ +Date: April 2017 +Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> +Description: + This directory appears only if the port device driver is capable + of showing the result of Discover Identity USB power delivery + command. That will not always be possible even when USB power + delivery is supported, for example when USB power delivery + communication for the port is mostly handled in firmware. If the + directory exists, it will have an attribute file for every VDO + in Discover Identity command result. USB Type-C cable devices (eg. /sys/class/typec/port0-cable/) @@ -159,9 +205,21 @@ described in USB Type-C and USB Power Delivery specifications. What: /sys/class/typec/<port>-cable/type Date: April 2017 Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> -Description: - Shows if the cable is active. - Valid values: active, passive +Description: USB Power Delivery Specification defines a set of product types + for the cables. This file will show the product type of the + cable if it is known. If the product type of the cable is not + visible to the device driver, this file will not exist. + + When the cable product type is detected, uvevent is also raised + with PRODUCT_TYPE showing the product type of the cable. + + Valid values: + + ====================== ========================== + undefined - + active Active Cable + passive Passive Cable + ====================== ========================== What: /sys/class/typec/<port>-cable/plug_type Date: April 2017 |