Purism Librem5 Devkit (purism-librem5dev)

Features
Flashing	Works
USB Networking
Internal storage
SD card
Battery
Screen	Works
Touchscreen	Works
Multimedia
3D Acceleration	Works
Audio	Partial
Camera
Camera Flash
Connectivity
WiFi	Works
Bluetooth	Partial
GPS	Works
NFC
Modem
Calls
SMS
Mobile data
Miscellaneous
FDE
USB OTG	Partial
HDMI/DP
Sensors
Accelerometer
Magnetometer
Ambient Light
Proximity
Hall Effect
Haptics
Barometer

Purism Librem 5 Devkit
Manufacturer	Purism
Name	Librem 5 Devkit
Codename	purism-librem5dev
Released	2018
Type	development board
Hardware
Chipset	Emcraft NXP i.MX8M
CPU	4x 1.5 GHz Cortex-A53
GPU	Vivante GC7000Lite
Display	1440x720
Storage	32 GB eMMC
Memory	3 GB
Architecture	aarch64
Software
Original software	PureOS
postmarketOS
Category	testing
Pre-built images	no
Unixbench Whet/Dhry score	869.5

Contributors

craftyguy
bshah

How to enter flash mode

The devkit has a switch on the same side as the reboot button, wifi switch, camera switch, and modem switch. Move it to the "USB Mode" position and hit the reboot button next to it in order to put the device into 'flash' mode.

Installation

Flashing

pmbootstrap now has support for flashing the devkit with the flasher command. After running pmbootstrap install to generate a rootfs, the devkit can be flashed by putting it into 'USB mode' and executing pmbootstrap flasher flash_rootfs

Once the image has been flashed, place the device into emmc mode and hit the reboot button to start booting postmarketOS. The first boot can take a few minutes as it resizes the rootfs to fill all available space on the emmc disk.

Graphics

The Vivante GPU in the devkit is fully supported upstream in Mesa and support for it should be installed by the device-purism-librem5dev package.

Todo

Bring up cellular modem
Resolve issues with Bluetooth
- Bluetooth can be started by loading the rsi_91x module with dev_oper_mode=14 but this disables Wifi station/client mode and enables Wifi AP mode. It doesn't seem to work with dev_oper_mode=13, which enables Wifi client mode.
Test/enable camera
Test/enable ambient light sensor

Ofono

As of 11/2019, ofono seems to "just work" when it is installed using "apk add ofono". Reasonable-looking signal information is reported, and calls seem to do something. I could not figure out how to route in-call audio, and it is possible that separate daemon is needed for that. https://source.puri.sm/Librem5/wys/blob/master/src/wys-audio.c