Semitime g2
| Semitime g2 | |
|---|---|
 | |
| Manufacturer | Semitime |
| Dimensions | 88.5mm x 35mm x 13.4mm |
| Release Date | December 2012 |
| Website | Reseller Product Page |
| Specifications | |
| SoC | A10s @ 1Ghz |
| DRAM | 1GiB DDR3 @ 432MHz |
| NAND | 4GB |
| Power | DC 5V @ 2A |
| Features | |
| Video | HDMI (Type C - mini) |
| Audio | HDMI, internal microphone |
| Network | WiFi 802.11 b/g/n (Realtek RTL8189ES) |
| Storage | µSD |
| USB | 1 USB2.0 Host, 1 USB2.0 OTG |
| Headers | none! |
This is an obvious Rikomagic MK802+ clone, but it contains an A10s SoC instead. It is not clear whether it was ever sold by Rikomagic itself, or whether it was only marketed by third parties.
Identification
This device is clearly marked as an MK802+ on the case, and is often sold as such. It however has 1GB of RAM and an A10s chip inside. The paper manual mentions "AK-212MinPC". The board is marked as "ST-G2", together with the kernel version strings, this led us to the manufacturer.
In android, under Settings->About Tablet, you will find:
- Model Number: SoftwinnerEvb
- Kernel-Version: 3.0.8 qliu00@semitime #6 Mon Dec 10:44:01 CST 2012
- Build Number: elite_nm307_v11-eng 4.0.4 IMMQ76D 20121210 test-keys
Incidentally, that's the same android image that is running on the Megafeis A08.
Sunxi support
Current status
Supported.
Images
HW-Pack
BSP
Manual build
- For building u-boot, use the "Semitime_G2" target.
- The .fex file can be found in sunxi-boards as semitime_g2.fex
Everything else is the same as the manual build howto.
Mainline kernel
Use the sun5i-a10s-mk802.dts device-tree file for the mainline kernel.
Tips, Tricks, Caveats
FEL mode
There is a special button to trigger FEL mode. You can reach it through the bottom-left hole of the top cover of the device.
Adding a serial port (voids warranty)
Device disassembly
The three piece case is clicked together. Do not try to get the semi-transparent bit around the USB Host connector off, as it is clipped into the top and you could damage the clip. Just gently push your plastic tool between the bottom and the top, and push the top part of the shell outwards. You will soon hear the clips release.
Locating the UART
On the board labelled VER:1.0, due to bad routing, the two pads which were meant to be the UART instead turned out to be PB11 and PB14, rendering them useless. You will have to resort to a MicroSD breakout board to get serial on this device.
Pictures
Also known as
- It is often branded as an A10s based MK802+, but it just shares the external packaging and has MK802+ written on the top cover.
See also
- Rikomagic MK802: The 512MiB A10 based original, which has the same case.
- Rikomagic MK802+: The 1GiB A10 based device, which also has the same case.
- Megafeis A08: Different board, different exterior, but it has the same android identification strings.