1USB Type-C port devices (eg. /sys/class/typec/port0/) 2 3What: /sys/class/typec/<port>/data_role 4Date: April 2017 5Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 6Description: 7 The supported USB data roles. This attribute can be used for 8 requesting data role swapping on the port. Swapping is supported 9 as synchronous operation, so write(2) to the attribute will not 10 return until the operation has finished. The attribute is 11 notified about role changes so that poll(2) on the attribute 12 wakes up. Change on the role will also generate uevent 13 KOBJ_CHANGE on the port. The current role is show in brackets, 14 for example "[host] device" when DRP port is in host mode. 15 16 Valid values: host, device 17 18What: /sys/class/typec/<port>/power_role 19Date: April 2017 20Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 21Description: 22 The supported power roles. This attribute can be used to request 23 power role swap on the port. Swapping is supported as 24 synchronous operation, so write(2) to the attribute will not 25 return until the operation has finished. The attribute is 26 notified about role changes so that poll(2) on the attribute 27 wakes up. Change on the role will also generate uevent 28 KOBJ_CHANGE. The current role is show in brackets, for example 29 "[source] sink" when in source mode. 30 31 Valid values: source, sink 32 33What: /sys/class/typec/<port>/port_type 34Date: May 2017 35Contact: Badhri Jagan Sridharan <Badhri@google.com> 36Description: 37 Indicates the type of the port. This attribute can be used for 38 requesting a change in the port type. Port type change is 39 supported as a synchronous operation, so write(2) to the 40 attribute will not return until the operation has finished. 41 42 Valid values: 43 44 ====== ============================================== 45 source (The port will behave as source only DFP port) 46 sink (The port will behave as sink only UFP port) 47 dual (The port will behave as dual-role-data and 48 dual-role-power port) 49 ====== ============================================== 50 51What: /sys/class/typec/<port>/vconn_source 52Date: April 2017 53Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 54Description: 55 Shows is the port VCONN Source. This attribute can be used to 56 request VCONN swap to change the VCONN Source during connection 57 when both the port and the partner support USB Power Delivery. 58 Swapping is supported as synchronous operation, so write(2) to 59 the attribute will not return until the operation has finished. 60 The attribute is notified about VCONN source changes so that 61 poll(2) on the attribute wakes up. Change on VCONN source also 62 generates uevent KOBJ_CHANGE. 63 64 Valid values: 65 66 - "no" when the port is not the VCONN Source 67 - "yes" when the port is the VCONN Source 68 69What: /sys/class/typec/<port>/power_operation_mode 70Date: April 2017 71Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 72Description: 73 Shows the current power operational mode the port is in. The 74 power operation mode means current level for VBUS. In case USB 75 Power Delivery communication is used for negotiating the levels, 76 power operation mode should show "usb_power_delivery". 77 78 Valid values: 79 80 - default 81 - 1.5A 82 - 3.0A 83 - usb_power_delivery 84 85What: /sys/class/typec/<port>/preferred_role 86Date: April 2017 87Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 88Description: 89 The user space can notify the driver about the preferred role. 90 It should be handled as enabling of Try.SRC or Try.SNK, as 91 defined in USB Type-C specification, in the port drivers. By 92 default the preferred role should come from the platform. 93 94 Valid values: source, sink, none (to remove preference) 95 96What: /sys/class/typec/<port>/supported_accessory_modes 97Date: April 2017 98Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 99Description: 100 Space separated list of accessory modes, defined in the USB 101 Type-C specification, the port supports. 102 103What: /sys/class/typec/<port>/usb_power_delivery_revision 104Date: April 2017 105Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 106Description: 107 Revision number of the supported USB Power Delivery 108 specification, or 0 when USB Power Delivery is not supported. 109 110What: /sys/class/typec/<port>/usb_typec_revision 111Date: April 2017 112Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 113Description: 114 Revision number of the supported USB Type-C specification. 115 116What: /sys/class/typec/<port>/orientation 117Date: February 2020 118Contact: Badhri Jagan Sridharan <badhri@google.com> 119Description: 120 Indicates the active orientation of the Type-C connector. 121 Valid values: 122 - "normal": CC1 orientation 123 - "reverse": CC2 orientation 124 - "unknown": Orientation cannot be determined. 125 126USB Type-C partner devices (eg. /sys/class/typec/port0-partner/) 127 128What: /sys/class/typec/<port>-partner/accessory_mode 129Date: April 2017 130Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 131Description: 132 Shows the Accessory Mode name when the partner is an Accessory. 133 The Accessory Modes are defined in USB Type-C Specification. 134 135What: /sys/class/typec/<port>-partner/supports_usb_power_delivery 136Date: April 2017 137Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 138Description: 139 Shows if the partner supports USB Power Delivery communication: 140 Valid values: yes, no 141 142What: /sys/class/typec/<port>-partner>/identity/ 143Date: April 2017 144Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 145Description: 146 This directory appears only if the port device driver is capable 147 of showing the result of Discover Identity USB power delivery 148 command. That will not always be possible even when USB power 149 delivery is supported, for example when USB power delivery 150 communication for the port is mostly handled in firmware. If the 151 directory exists, it will have an attribute file for every VDO 152 in Discover Identity command result. 153 154What: /sys/class/typec/<port>-partner/identity/id_header 155Date: April 2017 156Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 157Description: 158 ID Header VDO part of Discover Identity command result. The 159 value will show 0 until Discover Identity command result becomes 160 available. The value can be polled. 161 162What: /sys/class/typec/<port>-partner/identity/cert_stat 163Date: April 2017 164Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 165Description: 166 Cert Stat VDO part of Discover Identity command result. The 167 value will show 0 until Discover Identity command result becomes 168 available. The value can be polled. 169 170What: /sys/class/typec/<port>-partner/identity/product 171Date: April 2017 172Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 173Description: 174 Product VDO part of Discover Identity command result. The value 175 will show 0 until Discover Identity command result becomes 176 available. The value can be polled. 177 178 179USB Type-C cable devices (eg. /sys/class/typec/port0-cable/) 180 181Note: Electronically Marked Cables will have a device also for one cable plug 182(eg. /sys/class/typec/port0-plug0). If the cable is active and has also SOP 183Double Prime controller (USB Power Deliver specification ch. 2.4) it will have 184second device also for the other plug. Both plugs may have alternate modes as 185described in USB Type-C and USB Power Delivery specifications. 186 187What: /sys/class/typec/<port>-cable/type 188Date: April 2017 189Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 190Description: 191 Shows if the cable is active. 192 Valid values: active, passive 193 194What: /sys/class/typec/<port>-cable/plug_type 195Date: April 2017 196Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 197Description: 198 Shows type of the plug on the cable: 199 200 - type-a - Standard A 201 - type-b - Standard B 202 - type-c 203 - captive 204 205What: /sys/class/typec/<port>-cable/identity/ 206Date: April 2017 207Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 208Description: 209 This directory appears only if the port device driver is capable 210 of showing the result of Discover Identity USB power delivery 211 command. That will not always be possible even when USB power 212 delivery is supported. If the directory exists, it will have an 213 attribute for every VDO returned by Discover Identity command. 214 215What: /sys/class/typec/<port>-cable/identity/id_header 216Date: April 2017 217Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 218Description: 219 ID Header VDO part of Discover Identity command result. The 220 value will show 0 until Discover Identity command result becomes 221 available. The value can be polled. 222 223What: /sys/class/typec/<port>-cable/identity/cert_stat 224Date: April 2017 225Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 226Description: 227 Cert Stat VDO part of Discover Identity command result. The 228 value will show 0 until Discover Identity command result becomes 229 available. The value can be polled. 230 231What: /sys/class/typec/<port>-cable/identity/product 232Date: April 2017 233Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 234Description: 235 Product VDO part of Discover Identity command result. The value 236 will show 0 until Discover Identity command result becomes 237 available. The value can be polled. 238 239 240USB Type-C port alternate mode devices. 241 242What: /sys/class/typec/<port>/<alt mode>/supported_roles 243Date: April 2017 244Contact: Heikki Krogerus <heikki.krogerus@linux.intel.com> 245Description: 246 Space separated list of the supported roles. 247 248 Valid values: source, sink 249
