HW A, touchscreen not working:
$ cat xt897_HW_A_evdev_trace.out
----====( /dev/input/event0 )====----
Name: "gpio-keys"
ID: bus 0x19, vendor, 0x1, product 0x1, version 0x100
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_VOLUMEDOWN
Type 0x05 (EV_SW)
	 SW_LID*
Readers:
	mce(pid=664,fd=19)
	jolla-startupwizard-pre-user-session(pid=1310,fd=26)

----====( /dev/input/event1 )====----
Name: "keypad_8960"
ID: bus 0x18, vendor, 0x1, product 0x1, version 0x1
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_1 KEY_2 KEY_3 KEY_4 KEY_5 KEY_6 KEY_7 KEY_8 KEY_9 KEY_0 KEY_MINUS KEY_EQUAL
	 KEY_BACKSPACE KEY_TAB KEY_Q KEY_W KEY_E KEY_R KEY_T KEY_Y KEY_U KEY_I KEY_O KEY_P
	 KEY_ENTER KEY_LEFTCTRL KEY_A KEY_S KEY_D KEY_F KEY_G KEY_H KEY_J KEY_K KEY_L KEY_GRAVE
	 KEY_LEFTSHIFT KEY_Z KEY_X KEY_C KEY_V KEY_B KEY_N KEY_M KEY_COMMA KEY_DOT KEY_SLASH
	 KEY_LEFTALT KEY_SPACE KEY_CAPSLOCK KEY_RIGHTALT KEY_UP KEY_LEFT KEY_RIGHT KEY_DOWN
	 KEY_VOLUMEUP KEY_CAMERA
Type 0x04 (EV_MSC)
	 MSC_SCAN
Readers:
	mce(pid=664,fd=18)
	jolla-startupwizard-pre-user-session(pid=1310,fd=27)

----====( /dev/input/event2 )====----
Name: "light-prox"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x04 (EV_MSC)
	 MSC_RAW
Type 0x11 (EV_LED)
	 LED_MISC*
Readers:
	mce(pid=664,fd=17)
	sensorfwd(pid=1013,fd=14)

----====( /dev/input/event3 )====----
Name: "pmic8xxx_pwrkey"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_POWER
Readers:
	mce(pid=664,fd=16)
	dsme-server(pid=868,fd=11)
	jolla-startupwizard-pre-user-session(pid=1310,fd=28)

----====( /dev/input/event4 )====----
Name: "msm8960-snd-card Button Jack"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_MEDIA BTN_1 BTN_2 BTN_3 BTN_4 BTN_5 BTN_6 BTN_7
Readers:
	mce(pid=664,fd=15)
	jolla-startupwizard-pre-user-session(pid=1310,fd=29)

----====( /dev/input/event5 )====----
Name: "msm8960-snd-card Headset Jack"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x05 (EV_SW)
	 SW_HEADPHONE_INSERT SW_MICROPHONE_INSERT SW_HPHL_OVERCURRENT SW_HPHR_OVERCURRENT
Readers:
	mce(pid=664,fd=14)
	ohmd(pid=668,fd=6)

----====( /dev/input/event6 )====----
Name: "mmi_vib_memless"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x15 (EV_FF)
	 FF_RUMBLE FF_PERIODIC FF_SQUARE FF_TRIANGLE FF_SINE FF_GAIN

----====( /dev/input/event7 )====----
Name: "atmxt-i2c"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x03 (EV_ABS)
	 ABS_MT_WIDTH_MAJOR=0 [0,24] ABS_MT_POSITION_X=0 [0,1023] ABS_MT_POSITION_Y=0 [0,1023]
	 ABS_MT_TRACKING_ID=0 [0,9] ABS_MT_PRESSURE=0 [0,255]
Readers:
	mce(pid=664,fd=33)
	jolla-startupwizard-pre-user-session(pid=1310,fd=25)

=-=-=-=-=-=-=-=-=-=-=-=-=

HW B, touchscreen works:
$ cat xt897_HW_B_evdev_trace.out
----====( /dev/input/event0 )====----
Name: "gpio-keys"
ID: bus 0x19, vendor, 0x1, product 0x1, version 0x100
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_VOLUMEDOWN
Type 0x05 (EV_SW)
	 SW_LID
Readers:
	mce(pid=642,fd=19)
	lipstick(pid=1339,fd=26)

----====( /dev/input/event1 )====----
Name: "keypad_8960"
ID: bus 0x18, vendor, 0x1, product 0x1, version 0x1
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_1 KEY_2 KEY_3 KEY_4 KEY_5 KEY_6 KEY_7 KEY_8 KEY_9 KEY_0 KEY_MINUS KEY_EQUAL KEY_BACKSPACE
	 KEY_TAB KEY_Q KEY_W KEY_E KEY_R KEY_T KEY_Y KEY_U KEY_I KEY_O KEY_P KEY_ENTER* KEY_LEFTCTRL
	 KEY_A KEY_S KEY_D KEY_F KEY_G KEY_H KEY_J KEY_K KEY_L KEY_GRAVE KEY_LEFTSHIFT KEY_Z KEY_X KEY_C
	 KEY_V KEY_B KEY_N KEY_M KEY_COMMA KEY_DOT KEY_SLASH KEY_LEFTALT KEY_SPACE KEY_CAPSLOCK
	 KEY_RIGHTALT KEY_UP KEY_LEFT KEY_RIGHT KEY_DOWN KEY_VOLUMEUP KEY_CAMERA
Type 0x04 (EV_MSC)
	 MSC_SCAN
Readers:
	mce(pid=642,fd=18)
	lipstick(pid=1339,fd=27)
	photonq-helper(pid=1453,fd=12)

----====( /dev/input/event2 )====----
Name: "light-prox"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x04 (EV_MSC)
	 MSC_RAW
Type 0x11 (EV_LED)
	 LED_MISC
Readers:
	mce(pid=642,fd=17)
	sensorfwd(pid=1022,fd=14)

----====( /dev/input/event3 )====----
Name: "pmic8xxx_pwrkey"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_POWER
Readers:
	mce(pid=642,fd=16)
	dsme-server(pid=808,fd=11)
	lipstick(pid=1339,fd=28)

----====( /dev/input/event4 )====----
Name: "msm8960-snd-card Button Jack"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x01 (EV_KEY)
	 KEY_MEDIA BTN_1 BTN_2 BTN_3 BTN_4 BTN_5 BTN_6 BTN_7
Readers:
	mce(pid=642,fd=15)
	lipstick(pid=1339,fd=29)

----====( /dev/input/event5 )====----
Name: "msm8960-snd-card Headset Jack"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x05 (EV_SW)
	 SW_HEADPHONE_INSERT SW_MICROPHONE_INSERT SW_HPHL_OVERCURRENT SW_HPHR_OVERCURRENT
Readers:
	mce(pid=642,fd=14)
	ohmd(pid=674,fd=6)

----====( /dev/input/event6 )====----
Name: "mmi_vib_memless"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x15 (EV_FF)
	 FF_RUMBLE FF_PERIODIC FF_SQUARE FF_TRIANGLE FF_SINE FF_GAIN
Readers:
	ngfd(pid=1326,fd=14)
	lipstick(pid=1339,fd=98)
	voicecall-ui(pid=1478,fd=48)
	store-client(pid=1512,fd=60)
	fingerterm(pid=1542,fd=31)
	harbour-sailotp(pid=1740,fd=49)
	jolla-messages(pid=2212,fd=59)
	fingerterm(pid=3210,fd=31)
	fingerterm(pid=3210,fd=38)
	bash(pid=3211,fd=31)
	bash(pid=3413,fd=31)
	evdev_trace(pid=3532,fd=31)

----====( /dev/input/event7 )====----
Name: "atmxt-i2c"
ID: bus 0x0, vendor, 0x0, product 0x0, version 0x0
Type 0x00 (EV_SYN)
Type 0x03 (EV_ABS)
	 ABS_MT_WIDTH_MAJOR=0 [0,24] ABS_MT_POSITION_X=0 [0,1023] ABS_MT_POSITION_Y=0 [0,1023]
	 ABS_MT_TRACKING_ID=0 [0,9] ABS_MT_PRESSURE=0 [0,255]
Readers:
	mce(pid=642,fd=35)
	lipstick(pid=1339,fd=25)