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Samsung Galaxy Trend Plus (samsung-kylepro)

From postmarketOS Wiki
Samsung Galaxy Trend Plus
Manufacturer Samsung
Name Galaxy Trend Plus
Codename samsung-kylepro
Released 2013
Type handset
Hardware
Chipset Broadcom BCM21664T
CPU 2x 1.2 GHz Cortex-A9
GPU VideoCore IV
Display 480x800 (240dpi)
Storage 4 GB
Memory 768 MB
Architecture armv7
Software
Original software
The software and version the device was shipped with.
Android 4.2.2
postmarketOS
Category downstream
Mainline
Instead of a Linux kernel fork, it is possible to run (Close to) Mainline.
no
pmOS kernel
The kernel version that runs on the device's port.
3.4.113 / Mainline
Device package device-samsung-kylepro
Kernel package linux-samsung-kylepro
Features
Flashing
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
Charging and battery level reporting works
Works
Screen
Display works. Ideally with sleep mode and brightness control.
Works
Touchscreen
Works
Multimedia
3D Acceleration
Untested
Audio
Audio playback, microphone, headset and buttons.
Partial
Camera
Untested
Connectivity
WiFi
Works
Bluetooth
Untested
GPS
Untested
Modem
Calls
Untested
SMS
Untested
Mobile data
Untested
Miscellaneous
FDE
Full disk encryption and unlocking with unl0kr.
Works
Sensors
Accelerometer
Auto screen rotation works in desktops e.g. Phosh or Plasma Mobile
Works

Contributors

  • Deata

Maintainer(s)

  • Deata

Users owning this device


What works

  • Screen
  • USB Network
  • Wifi
  • Proximity sensor (/dev/input/event0)
    • enable with echo 1 > /sys/class/input/input0/enable
  • Accelerometer (/dev/input/event1)
    • enable with echo 1 > /sys/class/input/input1/enable
  • Compass (/dev/input/event2)
    • enable with echo 1 > /sys/class/input/input2/enable
  • Touch (/dev/input/event4)

What does not work

  • Setting up wifi using networkmanager. (Wifi works when setting up manually with wpa_supplicant and udhcpc, see WiFi)
  • Everything else

How to enter flash mode

  • Press volume down and the home key, then press the power button.
  • Maintain volume down and home pressed until a warning screen comes up

Installation

  • 1. Flash the kernel pmbootstrap flasher flash_kernel
  • 2. Flash system image pmbootstrap flasher flash_rootfs
  • 3. Install system image to sdcard pmbootstrap install --sdcard /dev/mmcblkXXX

Misc

Mainline

This device has support in mainline. Device is able to boot the mainline kernel all the way to the initramfs.

The internal clocks are currently broken on mainline meaning that the periperal devices don't work currently. Anyone with expertise in this area could perhaps help out.(?)

Pictures

UART pin location on motherboard

Videos

https://youtu.be/2h9T3Rb06LY

Links