Samsung Galaxy S5 mini (samsung-kminilte)

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Samsung Galaxy S5 mini
Samsung Galaxy S5 mini
Samsung Galaxy S5 mini
Manufacturer Samsung
Name Galaxy S5 mini
Codename samsung-kminilte
Released 2014
Type handset
Hardware
Chipset Samsung Exynos 3470
CPU Quad-core 1.4 GHz Cortex-A7
GPU Mali-400MP4
Display 720x1280 AMOLED
Storage 16GB
Memory 1.5GB
Architecture armv7
Software
Original software Android
Original version 4.4.2 (Linux 3.10)
postmarketOS
Category testing
Pre-built images no
Features
Flashing
Works
USB Networking
Works
Internal storage
SD card
Battery
Screen
Works
Touchscreen
Works
Multimedia
3D Acceleration
Audio
Camera
Camera Flash
Connectivity
WiFi
Works
Bluetooth
GPS
Modem
Calls
SMS
Mobile data
Miscellaneous
FDE
Works
USB OTG
HDMI/DP
Sensors
Accelerometer
Magnetometer
Ambient Light
Proximity
Hall Effect
Haptics
Barometer


Users owning this device


How to enter flash mode

Press and hold Volume Down + Home + Power simultaneously. Then click Volume Up to confirm.

How to enter recovery mode

Press and hold Volume Up + Home + Power simultaneously.

Problems

  • udevadm trigger causes a complete system freeze and eventual reboot. If you comment out that line in start_weston.sh and replace it by udevadm trigger --attr-match=name=sec_touchscreen, the touch screen should work.

Installation

First, install pmbootstrap.

Setup device to be used: 

$ pmbootstrap init
Channel [edge]:
Vendor [samsung]: samsung       <- enter this
Device codename [i9100]: kminilte   <- enter this
...

Build the rootfs image: 

$ pmbootstrap install

Then in order to flash it put your device in download mode, and plug it in USB. Then do: 

$ pmbootstrap flasher flash_rootfs

 Hold "Volume down" + "Home" buttons at the end of the process,
 so that when phone reboots put it in flashing mode again 

$ pmbootstrap flasher flash_kernel

 This time, don't hold any button, let it reboot to Linux!

It should boot, and show the Samsung splash screen. After that you should be able to setup and connect via SSH

Getting Wifi to work

Wifi requires firmware blobs to be installed: 

 apk add firmware-samsung-kminilte


After installation, either reboot the device, or:

  1. start "deferred-initcalls" service
  2. restart networkmanager and / or wpa_supplicant and / or whatever you want to do with networking

When using networkmanager, you should now be able to connect to a network: 

 nmtui

Troubleshooting Wifi

  • Interface wlan0 does not exist
  • using wlan0 or p2p0 fails with "Operation not permitted"
    • Check dmesg for messages containing "dhdsdio_download_firmware", to see if there was an error loading the firmware

What works

  • Booting off a microSD card
  • Display
  • Touchscreen
  • USB Networking
  • Full disk encryption
  • Proximity sensor
  • Light sensor
  • Heart rate sensor
  • Magnetic sensor
    • Chip: ALPS HSCDTD0008A (Datasheet)
    • Attached via: I2C, address 0x0c
    • Driver: hscd_i2c
  • Audio jack events
  • Physical buttons
    • Driver: gpio-keys
    • Device node: /dev/input/event8
      • KEY_HOMEPAGE: Home button
      • KEY_POWER: Power button
      • KEY_VOLUMEUP: Volume up button
      • KEY_VOLUMEDOWN: Volume down button
    • Use triggerhappy to configure what the buttons do
    • If you are running elogind, make sure to prevent it from handling the power button, by setting HandlePowerKeyIgnore in logind.conf
  • Touch keys
    • Attached via: I2C, address 0x20
    • Driver: i2c-gpio
    • Device node: /dev/input/event1
      • KEY_BACK Back button (right of the home button)
      • 254 (name neither listed by libinput, nor linux/input.h) Other button (left of the home button)
    • The left button cannot be used for triggerhappy right now, since it doesn't support configuring numeric key codes
  • Notification LED
    • Chip: Samsung KTD 2026
    • Attached via: I2C, address 0x30
    • Driver: ktd2026
    • This is an RGB LED. The red, green and blue channels can be controlled individually though led_r, led_g and led_b in /sys/class/leds/$led. Some examples:
      • full brightness red: echo 48 > /sys/class/leds/led_r/brightness (check max_brightness to make sure this is correct)
      • half brightness red: echo 24 > /sys/class/leds/led_r/brightness
      • blink green: echo 1 > /sys/class/leds/led_g/blink (set delay_{on,off} afterwards to control timing)
  • Vibration motor
  • Gyroscope
  • Wifi
  • Flashlight
    • Write mode "Torch" / "Off" to /sys/class/flashlight/rt-flash-led/mode to turn the light on and off
    • Change brightness by writing a value from 0 to 15 to /sys/class/flashlight/rt-flash-led/torch_brightness
    • See pmaports!1150 for details

Links

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