evtest /dev/input/event0:
Input driver version is 1.0.1
Input device ID: bus 0x19 vendor 0x1 product 0x1 version 0x100
Input device name: "soc:gpio-keys"
Supported events:
  Event type 0 (EV_SYN)
  Event type 1 (EV_KEY)
    Event code 114 (KEY_VOLUMEDOWN)
    Event code 115 (KEY_VOLUMEUP)
    Event code 212 (KEY_CAMERA)
Properties:
Testing ... (interrupt to exit)
^@^@^@^@^@^@^@^@^@^@^@^@^@W<96><8B><E9> time 2008772.853981, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 2008772.853981, -------------- SYN_REPORT ------------
Event: time 2008773.003980, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 2008773.003980, -------------- SYN_REPORT ------------
Event: time 2008773.463978, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 2008773.463978, -------------- SYN_REPORT ------------
Event: time 2008773.603979, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 2008773.603979, -------------- SYN_REPORT ------------
Event: time 2008774.103981, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 1
Event: time 2008774.103981, -------------- SYN_REPORT ------------
Event: time 2008774.253978, type 1 (EV_KEY), code 115 (KEY_VOLUMEUP), value 0
Event: time 2008774.253978, -------------- SYN_REPORT ------------
Event: time 2008776.563985, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 1
Event: time 2008776.563985, -------------- SYN_REPORT ------------
Event: time 2008776.713978, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0
Event: time 2008776.713978, -------------- SYN_REPORT ------------
Event: time 2008777.193997, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 1
Event: time 2008777.193997, -------------- SYN_REPORT ------------
Event: time 2008777.373977, type 1 (EV_KEY), code 114 (KEY_VOLUMEDOWN), value 0
Event: time 2008777.373977, -------------- SYN_REPORT ------------
[   31.574179] irq 0, desc: ee806900, depth: 1, count: 0, unhandled: 0
[   31.574219] ->handle_irq():  c0363a10,
[   31.574233] handle_bad_irq+0x0/0x290
[   31.583066] ->irq_data.chip(): c0e0e908,
[   31.583079] no_irq_chip+0x0/0x88
[   31.590794] ->action():   (null)
[   31.594091]    IRQ_NOPROBE set
[   31.597302]  IRQ_NOREQUEST set
[   31.600167] unexpected IRQ trap at vector 00
Event: time 2008784.514504, type 1 (EV_KEY), code 212 (KEY_CAMERA), value 1
Event: time 2008784.514504, -------------- SYN_REPORT ------------
[   31.932881] irq 0, desc: ee806900, depth: 1, count: 0, unhandled: 0
[   31.932918] ->handle_irq():  c0363a10,
[   31.932928] handle_bad_irq+0x0/0x290
[   31.941767] ->irq_data.chip(): c0e0e908,
[   31.941777] no_irq_chip+0x0/0x88
[   31.949493] ->action():   (null)
[   31.952792]    IRQ_NOPROBE set
[   31.956003]  IRQ_NOREQUEST set
[   31.958868] unexpected IRQ trap at vector 00
Event: time 2008784.873921, type 1 (EV_KEY), code 212 (KEY_CAMERA), value 0
Event: time 2008784.873921, -------------- SYN_REPORT ------------
[   32.136029] irq 0, desc: ee806900, depth: 1, count: 0, unhandled: 0
[   32.136065] ->handle_irq():  c0363a10,
[   32.136075] handle_bad_irq+0x0/0x290
[   32.144914] ->irq_data.chip(): c0e0e908,
[   32.144924] no_irq_chip+0x0/0x88
[   32.152640] ->action():   (null)
[   32.155939]    IRQ_NOPROBE set
[   32.159149]  IRQ_NOREQUEST set
[   32.162014] unexpected IRQ trap at vector 00