Ticwatch C2+ (mobvoi-skipjack)

From postmarketOS
Jump to navigation Jump to search
Mobvoi Ticwatch C2+
Ticwatch C2+ running XFCE4
Ticwatch C2+ running XFCE4
Manufacturer Mobvoi
Name Ticwatch C2+
Codename mobvoi-skipjack
Released 2018
Category testing
Original software Android Wear 9
Hardware
Chipset Qualcomm MSM8909 Snapdragon 210
CPU Quad-core 1.1 GHz Cortex-A7
GPU Adreno 304
Display 360x360 AMOLED
Storage 4 GB
Memory 1 GB
Architecture armv7
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Partial
WiFi
Works
Xwayland
FDE
Mainline
Battery
3D Acceleration
Accelerometer
Audio
Bluetooth
Camera
GPS
Broken
Mobile data
SMS
Calls
USB OTG
NFC
Ir TX



Contributors

  • ptrcnull

Users owning this device

How to enter flash mode

The watch supports flashing with fastboot. You can enter fastboot with adb reboot bootloader, or by rebooting and tapping the screen with two fingers (see video here).

Installation

WARNING: Doing this will delete ALL your data on the device, so backup all your data before continuing!

Before flashing postmarketOS you have to unlock your bootloader. To do so, you can run this command while in fastboot:

fastboot oem unlock

Follow the general installation guide with vendor mobvoi and codename skipjack, return here when told to (at the "installation and flashing section").

Now run the following, pick a password when prompted.

pmbootstrap install

Reboot back into fastboot (explained above).

pmbootstrap flasher flash_rootfs
pmbootstrap flasher flash_kernel

Reboot and you're good to go!

Broken stuff

Screen

For an unknown reason, msm_iommu_secure_fault_handler_v2 fails to get register dump after boot and the screen stays black. After disabling and re-enabling the display via following commands:

# echo 4 > /sys/class/graphics/fb0/blank
# echo 0 > /sys/class/graphics/fb0/blank

both IOMMU and the screen start working.

Modem/GPS

Device reboots after running msm-modem-downstream with following messages in kernel log:

[  148.027006] pil-q6v5-mss 4080000.qcom,mss: modem: Brought out of reset
[  148.078600] pil-q6v5-mss 4080000.qcom,mss: modem: Power/Clock ready interrupt received
[  148.078715] pil-q6v5-mss 4080000.qcom,mss: Subsystem error monitoring/handling services are up
[  148.079324] M-Notify: General: 7
[  148.126088] msm8952-asoc-wcd 7702000.sound: default codec configured
[  148.148391] msm8952-asoc-wcd 7702000.sound: ASoC: CODEC DAI cajon_vifeedback not registered
[  148.148744] msm8952-asoc-wcd 7702000.sound: snd_soc_register_card failed (-517)
[  148.486750] Fatal error on the modem.
[  148.486839] modem subsystem failure reason: fs_rmts_pm.c:855:[5, 6] rmts_read_iovec failed.
[  148.486900] subsys-restart: subsystem_restart_dev(): Restart sequence requested for modem, restart_level = SYSTEM.
[  148.489077] M-Notify: General: 8

No workaround found yet.

See also