Oysters T74ER

From linux-sunxi.org
Jump to: navigation, search
Oysters T74ER
Oysters t74er u-boot202201.jpg
Manufacturer Manufacturer
Dimensions 190.7mm x 115.7mm x 11.7mm
Release Date 23/03/2015
Website Device Product Page
SoC A33 @ 1.3Ghz
DRAM 512MiB DDR3 @ 400MHz
Power DC 5V @ 1A, 2000mAh 3.7V Li-Ion battery
LCD 1024x600 (7" 16:9)
Touchscreen X-finger capacitive/resistive (Manufacturer device)
Audio 3.5mm headphone plug, 3.5mm microphone plug, internal mono speaker, internal microphone
Network WiFi 802.11 b/g/n
Storage µSD
Camera ??.?MP (????x????) front, ??.?MP (????x????) rear

A Q8 style cheap tablet, but with an A33 SoC.


This section explains how to most easily identify your device. For a development board, explain the name(s) printed on the board. For an android device, find out the strings as reported under settings.

On the back of the device, the following is printed:

Tablet PC I T74ER

The PCB has the following silkscreened on it:


In android, under Settings->About Tablet, you will find:

  • Model Number: DEVICE
  • Build Number: Oysters_T74ER_SA002_08092015

Sunxi support

Current status

Mainline U-boot OK from SD.

Mainline kernel started but usb and drm don't work

Mainline U-Boot

Use the q8_a33_tablet_1024x600_defconfig build target.

Linux Kernel

Sunxi/Legacy Kernel

Only useful for A10/A10s/A13 and A20 based devices. Remove this section otherwise.


Mainline kernel

Use the FAMILY-CHIP-DEVICE.dtb device-tree binary.

Tips, Tricks, Caveats

Add MANUFACTURER DEVICE specific tips, tricks, Caveats and nice to have changes here.

FEL mode

The Volume+ button triggers FEL mode.

Device specific topic

If there are no further device specific topics to add, remove these sections.


Adding a serial port (voids warranty)


This section explains how to attach a serial port to the device. Make sure it refers to our UART howto. For a development board, you can just mention how to find the header with the pins and include a picture, and you can remove the warranty voiding warning.

Device disassembly

If necessary, provide a short description of how to open the device. Perhaps explain how the pins can be most easily popped. If pins do need to be popped, mention the Plastic tool howto.

Locating the UART

Describe how to find the RX,TX,GND signals here, and mention the UART howto.


Take some pictures of your device, upload them, and add them here. DO NOT UPLOAD PICTURES WHICH YOU PLUCKED OFF THE INTERNET.


List schematics, board layout, cad files, etc here.

Also known as

List rebadged devices here.

See also

Add some nice to have links here. This includes related devices, and external links.

Manufacturer images

Optional. Add non-sunxi images in this section.