[root@localhost ~]# udevadm info -a /sys/class/input/event14

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/pci0000:00/0000:00:15.1/i2c-7/7-0067/input/input14/event14':
    KERNEL=="event14"
    SUBSYSTEM=="input"
    DRIVER==""

  looking at parent device '/devices/pci0000:00/0000:00:15.1/i2c-7/7-0067/input/input14':
    KERNELS=="input14"
    SUBSYSTEMS=="input"
    DRIVERS==""
    ATTRS{name}=="Cypress APA Trackpad (cyapa)"
    ATTRS{phys}=="i2c-7-0067/input0"
    ATTRS{properties}=="5"
    ATTRS{uniq}==""

  looking at parent device '/devices/pci0000:00/0000:00:15.1/i2c-7/7-0067':
    KERNELS=="7-0067"
    SUBSYSTEMS=="i2c"
    DRIVERS=="cyapa"
    ATTRS{baseline}=="155 27"
    ATTRS{firmware_version}=="2.1"
    ATTRS{mode}=="gen3 operational"
    ATTRS{name}=="cyapa"
    ATTRS{product_id}=="CYTRA-101008-00"

  looking at parent device '/devices/pci0000:00/0000:00:15.1/i2c-7':
    KERNELS=="i2c-7"
    SUBSYSTEMS=="i2c"
    DRIVERS==""
    ATTRS{name}=="Synopsys DesignWare I2C adapter"

  looking at parent device '/devices/pci0000:00/0000:00:15.1':
    KERNELS=="0000:00:15.1"
    SUBSYSTEMS=="pci"
    DRIVERS=="i2c-designware-pci"
    ATTRS{broken_parity_status}=="0"
    ATTRS{class}=="0x0c8000"
    ATTRS{consistent_dma_mask_bits}=="32"
    ATTRS{d3cold_allowed}=="1"
    ATTRS{device}=="0x9c61"
    ATTRS{dma_mask_bits}=="32"
    ATTRS{driver_override}=="(null)"
    ATTRS{enable}=="1"
    ATTRS{irq}=="21"
    ATTRS{local_cpulist}=="0-1"
    ATTRS{local_cpus}=="3"
    ATTRS{msi_bus}=="1"
    ATTRS{numa_node}=="-1"
    ATTRS{subsystem_device}=="0x21ed"
    ATTRS{subsystem_vendor}=="0x103c"
    ATTRS{vendor}=="0x8086"

  looking at parent device '/devices/pci0000:00':
    KERNELS=="pci0000:00"
    SUBSYSTEMS==""
    DRIVERS==""