OnePlus Two (oneplus-oneplus2)

From postmarketOS Wiki
OnePlus Two
OnePlus Two running Weston
OnePlus Two running Weston
Manufacturer OnePlus
Name Two
Codename oneplus-oneplus2
Released 2015
Category testing
Pre-built images no
Original software Android
Original version 5.1.1
postmarketOS kernel 3.10.108
Hardware
Chipset Qualcomm Snapdragon 810 (MSM8994)
CPU 4x 1.7 GHz A57 + 4x 1.5 GHz A53
GPU Adreno 430 650 MHz
Display 1080x1920 Full HD IPS LCD In-Cell
Storage 16 or 64 GB eMMC v5.0
Memory 3 or 4 GB LPDDR4 RAM
Architecture AArch64
Type handset
Unixbench Whet/Dhry score 1409.9
Features
USB Networking
Works
Flashing
Works
Touchscreen
Works
Display
Works
WiFi
Broken
FDE
Mainline
Broken
Battery
Works
3D Acceleration
Broken
Audio
Bluetooth
Broken
Camera
Broken
GPS
Broken
Mobile data
Broken
Internal storage
SMS
Broken
Calls
Broken
USB OTG
NFC
Sensors
Accelerometer
Broken
Magnetometer
Ambient Light
Proximity
Hall Effect
Barometer
Power Sensor
Misc
Built-in DVB
Camera Flash
Keyboard
Touchpad
USB-A
HDMI/DP
Ir TX
Ir RX
Stylus
Memory Card
Haptics
Ethernet
FOSS bootloader


Development status

As of 23/05/2021 this device is not recommended to be used for mission critical tasks as it's not possible to connect to the Wi-Fi nor broadband and it's lacking implementation of Direct Rendering Manager (DRM) in linux kernel makes it impossible to use graphical interfaces such as phosh and plasma-mobile.

What works:

  • Kernel compilation
  • Flashing system (including recovery mode flashable zip)
  • Booting kernel via fastboot
  • initramfs boot
  • Flashing kernel
  • USB network
  • SSH connectivity (using USB network only)
  • sxmo
  • Touchscreen

What does NOT work:

  • Wi-Fi (blob needed)
  • Direct Rendering Manager (DRM)
    • phosh
    • plasma-mobile
  • Weston boots to blank screen (no available back-end)
  • Default deviceinfo uses only 4 of available 8 cpu cores (#CPU tuning)

BIOS built-in signals

Majority of all android devices have three signals accessible by pressing physical buttons depending on the runtime state of a device.

Hard shutdown

Pressing and holding POWER button for +- 20 seconds will force device shutdown allowing you to access recovery and fastboot mode.

Recovery

is used to recover a device which Operating System is unable to boot. To access this mode press and hold when the device is turned off

VOLUME_DOWN + POWER

Fastboot

is mainly used during the device production for manufacturer to load the required software onto the device. This mode can also be used to flash 3rd party recovery.

To access it press and hold while device is turned off

VOLUME_UP + POWER

Deployment of pmos on the device

This section covers recommended steps to deploy PostmarketOS on Oneplus2, these steps are made for a reference and should be used with a causion.

Preparation

pmbootstrap

To install PostmarketOS you need a pmbootstrap, see https://wiki.postmarketos.org/wiki/Installing_pmbootstrap for more informations

Once you've installed it, follow-up with pmbootstrap init and go through the Terminal interface selecting Vendor `oneplus` and `oneplus2`. If the vendor is not available you might need to use and edge channel.

USB-C cable

Lot of USB-C cables are crappy which causes the insulation to get brutal and chip off causing short in-between pins

TODO(Krey): Photo

resulting in a bad connecting and failure to enumerate (identify the USB device for the system) in dmesg seen as:

[535470.046440] usb 2-1: new full-speed USB device number 76 using xhci_hcd
[535470.186582] usb 2-1: device descriptor read/64, error -71
[535470.434567] usb 2-1: device descriptor read/64, error -71

Verify using dmesg -w to ensure that your cable has data pin linked and that it's working without issues for example:

[536030.265487] usb 2-1: new high-speed USB device number 87 using xhci_hcd
[536030.421932] usb 2-1: New USB device found, idVendor=18d1, idProduct=4ee2, bcdDevice= 3.10
[536030.421944] usb 2-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[536030.421948] usb 2-1: Product: Android
[536030.421952] usb 2-1: Manufacturer: OnePlus
[536030.421956] usb 2-1: SerialNumber: REDACTED
[536031.780781] usb 2-1: USB disconnect, device number 87

Installation

flashable zip method

Flashable zip files can be installed using: A. Recovery mode B. ADB sideloading

To get a flashable zip invoke:

pmbootstrap install --android-recovery-zip

To export it in a default path /tmp/postmarketOS-export/pmos-oneplus-oneplus2.zip use:

pmbootstrap export

fastboot method

Put the device in a "fastboot mode" and invoke:

pmbootstrap flasher flash_kernel

Hardware details / status

hwtest output

Category Model Path Status Value
framebuffer mdssfb_90000 /sys/class/graphics/fb0 Working U:1080x1920p-360
framebuffer mdssfb_a0000 /sys/class/graphics/fb1 Working
input gpio-keys /dev/input/event6 Working
input synaptics /dev/input/event5 Working
input synaptics /dev/input/event4 Working
input qpnp_pon /dev/input/event3 Working
input STM VL6180 proximity sensor /dev/input/event2 Working
input fpc1020 /dev/input/event1 Working
input tri-state-key /dev/input/event0 Working

See also /sys/project_info/component_info/

CPU tuning

The default deviceinfo defines boot_cpus=0-3. This boots only the 4x 1.56 GHz A53 cores. This can be shown via cpufreq-info (package cpufrequtils), or htop. The unixbench result for this configuration is 1409.9, similar to other quadcore A53 devices. The default governor is battery-draining "performance".

To utilize all cores, extract and edit (or update) bootimg.cfg from boot.img to use boot_cpus=0-7. Boot the new image via fastboot boot boot.img. Alternatively, edit deviceinfo and repeat pmbootstrap install. This configuration will boot the 4x 1.56 GHz A53 cores as cpus 0-3 and the 4x 1.77 GHz A57 cores as cpus 4-7. The unixbench result for this configuration is 2702.1. (Note at present the only other MSM8994 device in the benchmark table, sony-sumire, for unknown reasons uses boot_cpus=0-5, and thus has a lower score).

The governor for each quad is assigned separately:

$ sudo cpufreq-set -c 0 -r -g ondemand
$ sudo cpufreq-set -c 4 -r -g ondemand

This change does not persist across reboots. For a persistent change uniform across all cores, confirm that the governor listed in /etc/conf.d/cpufrequtils is acceptable, then install the service as:

$ sudo rc-update add cpufrequtils boot

Alternatively, reconfigure the kernel (CPU Frequency scaling section).

Affiliates

Maintainer(s): - None

Contributor(s):

References

  1. Device package
  2. Kernel package
  3. 3rd party kernel used in AOSP Extended
  4. Wiki page of the device