Samsung Galaxy Tab 3 Lite 7.0 (samsung-goyawifi)

From postmarketOS
Samsung Galaxy Tab 3 Lite 7.0
Samsung Galaxy Tab 3 Lite 7.0
Samsung Galaxy Tab 3 Lite 7.0
Manufacturer Samsung
Name Galaxy Tab 3 Lite 7.0
Codename samsung-goyawifi
Released 2014
Category testing
Pre-built images no
Original software Android
Original version 4.4.2 (Linux 3.4.5)
Hardware
Chipset Marvell PXA986
CPU Dual-core 1.2 GHz Cortex-A9
GPU Vivante GC1000
Display 1024×600 TFT, ~170 PPI (MDPI)
Storage 8GB
Memory 1GB
Architecture ARMv7
Type Tablet
Features
USB Networking
Works
Flashing
Partial
Touchscreen
Works
Display
Works
WiFi
Works
FDE
Broken
Mainline
Broken
Battery
Works
3D Acceleration
Partial
Audio
Works
Bluetooth
Camera
Partial
GPS
Internal storage
USB OTG
Sensors
Accelerometer
Works
Misc
Built-in DVB
Camera Flash
Ir RX
Stylus
Memory Card
Haptics
Ethernet
FOSS bootloader
Broken


Links and development thread

Here you can get more and frequently updated information about status and downloads for this device:

Contributors

  • cheadrian

Updates

As of 18.11.2023, the Edge version of PostMarketOS still works.

Installation

The most compatible way is to use recovery zip. Make sure you have the TWRP recovery from the XDA thread for both ready-made zip or the build one.

You can navigate to the XDA thread above and download a flashable zip (faster) or you can build using pmbootstrap to get the latest version of packages (recommended).

$ pmbootstrap init
Pick the proper device according, Samsung -> Goyawifi
$ pmbootstrap install --android-recovery-zip --recovery-install-partition=external_sd
$ pmbootstrap export
$ cd /tmp/postmarketOS-export/
$ adb push pmos-samsung-goyawifi.zip /sdcard

Alternative, you can copy using MTP the zip inside tablet internal storage (/sdcard), microSD is mapped as /external_sd.

Audio

Audio should working. Configuration is it now in the pmaports.

Accelerometer

You can access accelerometer raw data from:

$cat /sys/class/sensors/accelerometer_sensor/raw_data

Calibration data:

$cat /sys/class/sensors/accelerometer_sensor/calibration

Camera

Camera seems to work now with the full resolution after unlocking the CMA limit from boot flags. The example bellow is with half resolution.

$sudo apk add v4l-utils imagemagick

$v4l2-ctl -d /dev/video0 --set-fmt-video=width=320,height=240,pixelformat=UYVY --stream-mmap --stream-count=1 --stream-to=test.raw

$convert -size 320x240 -depth 16 uyvy:test.raw test.png

3D acceleration

Hardware accelerated graphic demos, based on old Etnaviv initial work over proprietary Vivante GPU:

The kernel also integrates an old Etnaviv module I've backported, yet didn't manage to make it work with actual mesa, but it probably would work.

Related work

Can compile the kernel using Pazos kernel source using his shell script and bind pmOS generated initramfs with the kernel build with GCC 4.7.

The output to UART using MicroUSB cable with 520Kohm, 619Kohm and 150Kohm between ID and GND pins works, with the kernel config according to Command Line and serial output.