Inet K970

= Identification =

On the back of the device, the following is printed: Tristan Auron Planet 1

The PCB has the following silkscreened on it: INET-K970-REV02 Zeng-gc 2013-08-27

In android, under Settings->About Tablet, you will find:
 * Model Number: planet 1
 * Build Number: A20_K9701_K9701L2B_1210239.20121030

= Sunxi support =

Current status
Supported by the legacy u-boot-sunxi and sunxi-3.4 kernel.

Only partially working are:
 * Bluetooth

Currently broken for A20 is:
 * USB OTG

No drivers are readily at hand for the following devices:
 * G-Sensor
 * Cameras

All devices not mentioned above are fully operational.

Manual build

 * For building u-boot, use the target.
 * The .fex file can be found in sunxi-boards as tristan-auron-planet-1.fex

Everything else is the same as the Manual build howto.

Mainline U-Boot


For building mainline u-boot, use the Tristan_Auron_Planet_1_defconfig target.

A patch is currently under review.

Until the patch and new various features hit the main repository, use the following u-boot as mainline: $ git clone -b sunxi-wip https://github.com/jwrdegoede/u-boot-sunxi/tree/sunxi-wip In particular, this allows an u-boot dialog using an usb-keyboard and the tablet's LCD.

Mainline kernel
= Tips, Tricks, Caveats =

FEL mode
The Vol+ button triggers FEL mode.

Reset button
Like with most Inet-tek tablets, a reset button is available through the pinhole on the back.

Buttons
The keys are working. Use the sun4i_keyboard module. Test using evtest. The power-key is available using the input/event0 device provided by axp. Install acpid for controlled shutdown. Note the FEX power_start setting, which has an effect on reboot/halt, when connected to AC power.

Touchscreen
The touchscreen works well with the ft5x_ts driver available in linux-sunxi (modulo the patch noted on the driver page). Some modifications were applied w.r.t. the original FEX file.

Wifi
Wifi is provided by a RTL8723AU. This is an USB device, attached to the third USB-bus. Some modifications were applied therefor w.r.t. the original FEX file.

Bluetooth
Bluetooth works using the rtk_btusb module, though I had mixed success working towards full operation of a Bluetooth keyboard.

Most particular, the Weezy userspace is not operational, see e.g. here for some fun ahead. I had more success with bluez-5.23 and could reliably connect and use the keyboard.

Automatic connection failed though, which may or may not related to recognizable driver issues.

= Adding a serial port (voids warranty) =



Device disassembly
To open the tablet, first remove the two screws on the connector's side. As the picture aside shows, the back cover can most safely be lifted from the side opposite to the connectors. Try using a Plastic tool. A spool-like tool, shown with the opened device, worked better for me. Before trying to open the tablet, notice the eyelets on the back cover clearly visible both at the cover itself and its shadows. I found it best to open it first at one of the loops in the middle.



Locating the UART
= Pictures =

= Also known as =


 * Tristan Auron Planet 1
 * M973

= See also =