Volla Phone (volla-yggdrasil)
Appearance
	
	
|  Booted early mainline kernel v6.1-rc5 with Sxmo! | |
| Manufacturer | Volla | 
|---|---|
| Name | Phone | 
| Codename | volla-yggdrasil | 
| Released | 2020 | 
| Type | handset | 
| Hardware | |
| Chipset | MediaTek Helio P23 (MT6763V) | 
| CPU | Octa-core Cortex-A53 @ 2.0 GHz | 
| GPU | ARM Mali-G71 MP2 (Bifrost, v6) @ 770 MHz, 2 cores | 
| Display | 1080x2340 6,3" | 
| Storage | 64 GB eMMC | 
| Memory | 4 GB | 
| Architecture | aarch64 | 
| Software | |
| Original software The software and version the device was shipped with. | Android 9 | 
| Extended version The most recent supported version from the manufacturer. | Android 12 | 
| Optional software | Ubuntu Touch | 
| FOSS bootloader | no | 
| postmarketOS | |
| Category | testing | 
| Mainline Instead of a Linux kernel fork, it is possible to run (Close to) Mainline. | yes | 
| pmOS kernel The kernel version that runs on the device's port. | 6.1_rc5 | 
| Unixbench score Unixbench Whetstone/Dhrystone score. See Unixbench. | 4393.6 | 
| Device package |  device-volla-yggdrasil | 
| Kernel package |  linux-volla-yggdrasil | 
| Flashing Whether it is possible to flash the device with  pmbootstrap flasher. | Works | 
|---|---|
| USB Networking After connecting the device with USB to your PC, you can connect to it via telnet (initramfs) or SSH (booted system). | Works | 
| Battery Whether charging and battery level reporting work. | Broken | 
| Screen Whether the display works; ideally with sleep mode and brightness control. | Partial | 
| Touchscreen | Broken | 
| Multimedia | |
| 3D Acceleration | Broken | 
| Audio Audio playback, microphone, headset and buttons. | Broken | 
| Camera | Broken | 
| Camera Flash | Untested | 
| Connectivity | |
| WiFi | Broken | 
| Bluetooth | Broken | 
| GPS | Broken | 
| NFC Near Field Communication | Broken | 
| Modem | |
| Calls | Broken | 
| SMS | Broken | 
| Mobile data | Broken | 
| Miscellaneous | |
| FDE Full disk encryption and unlocking with unl0kr. | Untested | 
| USB OTG USB On-The-Go or USB-C Role switching. | Untested | 
| Sensors | |
| Accelerometer Handles automatic screen rotation in many interfaces. | Broken | 
| Magnetometer Sensor to measure the Earth's magnetism | Broken | 
| Ambient Light Measures the light level; used for automatic screen dimming in many interfaces. | Broken | 
| Proximity | Broken | 
| Hall Effect Measures magnetic fields; usually used as a flip cover sensor | Broken | 
| Haptics | Untested | 
| This device is based on the Helio P23. See the SoC page for common tips, guides and troubleshooting steps | 
How to enter flash mode
- Fastboot: Power on the device with both and buttons held down. Then select Fastboot by pressing and confirm with .
- Recovery: Do the same as for Fastboot, but select the Recovery option in the menu instead.
- MediaTek Preloader: The preloader triggers automatically everytime the phone turns on or reboots.
Installation
Follow the usual flashing guide via pmbootstrap.
| NOTE: fastboot booting is broken on this device, so e.g.pmbootstrap flasher bootwon't work and as such kernels will always have to be flashed to thebootpartition of the device. | 
Mainline kernel
There is some early mainline support being worked on for the MT6763 chipset; see the MediaTek Helio P23 SoC page and Volla Phone (volla-yggdrasil)/Hacking for more details.
Please note that as eMMC internal storage access isn't yet working you'll have to Netboot a postmarketOS rootfs over USB RNDIS!
As pmbootstrap flasher flash_dtbo is a pre-requisite to booting mainline please backup your existing dtbo partition contents to be able to boot downstream kernels/recovery images again with e.g. mtk r dtbo dtbo-backup.img using mtkclient!
| NOTE: Currently mainline ONLY boots with the (Android 9) firmware & bootloader that Ubuntu Touch also uses, so flash that beforehand through the UBports installer! Needs investigation what changes are required to boot with Android 10 bootloader... | 
Patches of interest
- Himax HX83112b touchscreen driver (also used on the Fairphone 3 (fairphone-fp3)!): https://patchwork.kernel.org/project/linux-input/cover/20221107105604.26541-1-job@noorman.info/, will in v6.2-rc1 :)
Partition layout
volla-yggdrasil:~# fdisk -l -o Device,Start,End,Sectors,Size,Name /dev/mmcblk0
Disk /dev/mmcblk0: 58.24 GiB, 62537072640 bytes, 122142720 sectors Units: sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disklabel type: gpt Disk identifier: 00000000-0000-0000-0000-000000000000 Device Start End Sectors Size Name /dev/mmcblk0p1 64 6207 6144 3M proinfo /dev/mmcblk0p2 6208 8255 2048 1M boot_para /dev/mmcblk0p3 8256 73791 65536 32M recovery /dev/mmcblk0p4 73792 74815 1024 512K para /dev/mmcblk0p5 74816 115775 40960 20M expdb /dev/mmcblk0p6 115776 117823 2048 1M frp /dev/mmcblk0p7 117824 183359 65536 32M nvcfg /dev/mmcblk0p8 183360 314431 131072 64M nvdata /dev/mmcblk0p9 314432 379967 65536 32M metadata /dev/mmcblk0p10 379968 396351 16384 8M protect1 /dev/mmcblk0p11 396352 425983 29632 14.5M protect2 /dev/mmcblk0p12 425984 442367 16384 8M seccfg /dev/mmcblk0p13 442368 540671 98304 48M persist /dev/mmcblk0p14 540672 544767 4096 2M sec1 /dev/mmcblk0p15 544768 675839 131072 64M md1img /dev/mmcblk0p16 675840 708607 32768 16M md1dsp /dev/mmcblk0p17 708608 710655 2048 1M spmfw /dev/mmcblk0p18 710656 712703 2048 1M sspm_1 /dev/mmcblk0p19 712704 714751 2048 1M sspm_2 /dev/mmcblk0p20 714752 747519 32768 16M gz1 /dev/mmcblk0p21 747520 780287 32768 16M gz2 /dev/mmcblk0p22 780288 911359 131072 64M nvram /dev/mmcblk0p23 911360 913407 2048 1M lk /dev/mmcblk0p24 913408 915455 2048 1M lk2 /dev/mmcblk0p25 915456 980991 65536 32M boot /dev/mmcblk0p26 980992 997375 16384 8M logo /dev/mmcblk0p27 997376 1013759 16384 8M dtbo /dev/mmcblk0p28 1013760 1023999 10240 5M tee1 /dev/mmcblk0p29 1024000 1048575 24576 12M tee2 /dev/mmcblk0p30 1048576 2686975 1638400 800M vendor /dev/mmcblk0p31 2686976 10027007 7340032 3.5G system /dev/mmcblk0p32 10027008 10911743 884736 432M cache /dev/mmcblk0p33 10911744 122109918 111198175 53G userdata /dev/mmcblk0p34 122109919 122142686 32768 16M flashinfo
Community Info
postmarketOS users that own the device
- Comcloudway (Notes: running /e/OS)
- Cvbnm90i
- Danct12
- Deathmist (Notes: Working on mainlining)
- Eriki73 (Notes: Working on mainlining)
Maintainer(s)
- No one currently; feel free to pick up the remains under the See also section!