1 What: Raise a uevent when a USB char 1 What: Raise a uevent when a USB charger is inserted or removed
2 Date: 2020-01-14 2 Date: 2020-01-14
3 KernelVersion: 5.6 3 KernelVersion: 5.6
4 Contact: linux-usb@vger.kernel.org 4 Contact: linux-usb@vger.kernel.org
5 Description: There are two USB charger stat 5 Description: There are two USB charger states:
6 !! 6 USB_CHARGER_ABSENT
7 - USB_CHARGER_ABSENT !! 7 USB_CHARGER_PRESENT
8 - USB_CHARGER_PRESENT <<
9 <<
10 There are five USB charger typ 8 There are five USB charger types:
11 !! 9 USB_CHARGER_UNKNOWN_TYPE: Charger type is unknown
12 ======================== ==== !! 10 USB_CHARGER_SDP_TYPE: Standard Downstream Port
13 USB_CHARGER_UNKNOWN_TYPE Char !! 11 USB_CHARGER_CDP_TYPE: Charging Downstream Port
14 USB_CHARGER_SDP_TYPE Stan !! 12 USB_CHARGER_DCP_TYPE: Dedicated Charging Port
15 USB_CHARGER_CDP_TYPE Char !! 13 USB_CHARGER_ACA_TYPE: Accessory Charging Adapter
16 USB_CHARGER_DCP_TYPE Dedi <<
17 USB_CHARGER_ACA_TYPE Acce <<
18 ======================== ==== <<
19 <<
20 https://www.usb.org/document-l 14 https://www.usb.org/document-library/battery-charging-v12-spec-and-adopters-agreement
21 15
22 Here are two examples taken us !! 16 Here are two examples taken using udevadm monitor -p when
23 USB charger is online:: !! 17 USB charger is online:
24 !! 18 UDEV change /devices/soc0/usbphynop1 (platform)
25 UDEV change /devices/so !! 19 ACTION=change
26 ACTION=change !! 20 DEVPATH=/devices/soc0/usbphynop1
27 DEVPATH=/devices/soc0/usbp !! 21 DRIVER=usb_phy_generic
28 DRIVER=usb_phy_generic !! 22 MODALIAS=of:Nusbphynop1T(null)Cusb-nop-xceiv
29 MODALIAS=of:Nusbphynop1T(n !! 23 OF_COMPATIBLE_0=usb-nop-xceiv
30 OF_COMPATIBLE_0=usb-nop-xc !! 24 OF_COMPATIBLE_N=1
31 OF_COMPATIBLE_N=1 !! 25 OF_FULLNAME=/usbphynop1
32 OF_FULLNAME=/usbphynop1 !! 26 OF_NAME=usbphynop1
33 OF_NAME=usbphynop1 !! 27 SEQNUM=2493
34 SEQNUM=2493 !! 28 SUBSYSTEM=platform
35 SUBSYSTEM=platform !! 29 USB_CHARGER_STATE=USB_CHARGER_PRESENT
36 USB_CHARGER_STATE=USB_CHAR !! 30 USB_CHARGER_TYPE=USB_CHARGER_SDP_TYPE
37 USB_CHARGER_TYPE=USB_CHARG !! 31 USEC_INITIALIZED=227422826
38 USEC_INITIALIZED=227422826 !! 32
39 !! 33 USB charger is offline:
40 USB charger is offline:: !! 34 KERNEL change /devices/soc0/usbphynop1 (platform)
41 !! 35 ACTION=change
42 KERNEL change /devices/s !! 36 DEVPATH=/devices/soc0/usbphynop1
43 ACTION=change !! 37 DRIVER=usb_phy_generic
44 DEVPATH=/devices/soc0/usbp !! 38 MODALIAS=of:Nusbphynop1T(null)Cusb-nop-xceiv
45 DRIVER=usb_phy_generic !! 39 OF_COMPATIBLE_0=usb-nop-xceiv
46 MODALIAS=of:Nusbphynop1T(n !! 40 OF_COMPATIBLE_N=1
47 OF_COMPATIBLE_0=usb-nop-xc !! 41 OF_FULLNAME=/usbphynop1
48 OF_COMPATIBLE_N=1 !! 42 OF_NAME=usbphynop1
49 OF_FULLNAME=/usbphynop1 !! 43 SEQNUM=2494
50 OF_NAME=usbphynop1 !! 44 SUBSYSTEM=platform
51 SEQNUM=2494 !! 45 USB_CHARGER_STATE=USB_CHARGER_ABSENT
52 SUBSYSTEM=platform !! 46 USB_CHARGER_TYPE=USB_CHARGER_UNKNOWN_TYPE
53 USB_CHARGER_STATE=USB_CHAR <<
54 USB_CHARGER_TYPE=USB_CHARG <<
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.