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| Udevadm info starts with the device specified by the devpath and then | |
| walks up the chain of parent devices. It prints for every device | |
| found, all possible attributes in the udev rules key format. | |
| A rule to match, can be composed by the attributes of the device | |
| and the attributes from one single parent device. | |
| looking at device '/devices/platform/soc/1c1b000.usb/usb2/2-1': | |
| KERNEL=="2-1" | |
| SUBSYSTEM=="usb" | |
| DRIVER=="usb" | |
| ATTR{authorized}=="1" | |
| ATTR{avoid_reset_quirk}=="1" | |
| ATTR{bConfigurationValue}=="1" | |
| ATTR{bDeviceClass}=="ef" | |
| ATTR{bDeviceProtocol}=="01" | |
| ATTR{bDeviceSubClass}=="02" | |
| ATTR{bMaxPacketSize0}=="64" | |
| ATTR{bMaxPower}=="500mA" | |
| ATTR{bNumConfigurations}=="1" | |
| ATTR{bNumInterfaces}==" 5" | |
| ATTR{bcdDevice}=="0318" | |
| ATTR{bmAttributes}=="a0" | |
| ATTR{busnum}=="2" | |
| ATTR{configuration}=="" | |
| ATTR{devnum}=="14" | |
| ATTR{devpath}=="1" | |
| ATTR{devspec}=="(null)" | |
| ATTR{idProduct}=="0125" | |
| ATTR{idVendor}=="2c7c" | |
| ATTR{ltm_capable}=="no" | |
| ATTR{manufacturer}=="Quectel" | |
| ATTR{maxchild}=="0" | |
| ATTR{power/active_duration}=="65880" | |
| ATTR{power/autosuspend}=="3" | |
| ATTR{power/autosuspend_delay_ms}=="3000" | |
| ATTR{power/connected_duration}=="220384" | |
| ATTR{power/control}=="auto" | |
| ATTR{power/level}=="auto" | |
| ATTR{power/persist}=="0" | |
| ATTR{power/runtime_active_time}=="66059" | |
| ATTR{power/runtime_status}=="active" | |
| ATTR{power/runtime_suspended_time}=="154039" | |
| ATTR{power/wakeup}=="enabled" | |
| ATTR{power/runtime_suspended_time}=="154039" [62/1809] | |
| ATTR{power/wakeup}=="enabled" | |
| ATTR{power/wakeup_abort_count}=="0" | |
| ATTR{power/wakeup_active}=="0" | |
| ATTR{power/wakeup_active_count}=="6" | |
| ATTR{power/wakeup_count}=="0" | |
| ATTR{power/wakeup_expire_count}=="0" | |
| ATTR{power/wakeup_last_time_ms}=="58068198" | |
| ATTR{power/wakeup_max_time_ms}=="0" | |
| ATTR{power/wakeup_prevent_sleep_time_ms}=="0" | |
| ATTR{power/wakeup_total_time_ms}=="0" | |
| ATTR{product}=="EG25-G" | |
| ATTR{quirks}=="0x10" | |
| ATTR{removable}=="unknown" | |
| ATTR{rx_lanes}=="1" | |
| ATTR{speed}=="480" | |
| ATTR{tx_lanes}=="1" | |
| ATTR{urbnum}=="1811" | |
| ATTR{version}==" 2.00" |
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