|Dimensions||190mm x 130mm|
|Website||OKA40i-C Product Page|
|SoC||A40i @ 1.2Ghz|
|DRAM||1GiB/2GiB DDR3 @ 576MHz|
|Power||DC 5V @ 2A, battery|
|Video||HDMI (Type A - full), TV out, LVDS|
|Audio||3.5mm headphone plug, 3.5mm microphone plug, HDMI|
|Network||WiFi 802.11 b/g/n (RL-UM02WBS-8723BU-V1.2), 10/100Mbps Ethernet (Manufacturer device)|
|Storage||µSD, fullsize SD, eMMC, SATA|
|USB||3 x USB2.0 Host (2 via hub, 1 native), 1 x USB2.0 OTG (micro-B)|
This is a development board built around Forlinx's "automotive" FETA40i-C system-on-module based on the A40i chip.
The SOM has "FETA40i-C" silkscreened on it in the upper left corner; The carrier devboard has "OKA40i-C [version]" near the fullsize SD card slot.
Manufacturer-provided images/sources available (kernel 3.10).
Experimental support with mainline U-Boot. Mainline Linux (Armbian) has been made to run on this board.
Currently working code available at https://github.com/flashcactus/u-boot/tree/sunxi-feta40i-config-rb.
Apparently provided by the board/SoM manufacturer to customers only. Contains Allwinner BSP based images, SDKs, schematics and other information, with the usual complete ignorance towards mainline work.
No mainline support yet. Experiments should start off the other R40/A40i boards. DRAM is apparently dual-rank, which is not yet supported by mainline U-Boot (but you can try to make it work anyway if you really want).
You can build things for yourself by following our Manual build howto and by choosing from the configurations available below.
Use the repository at https://github.com/flashcactus/u-boot/tree/sunxi-feta40i-config-rb, using the OKA40i build target.
The mainline kernel runs on this board without any additional modification. For now, compile the sun8i-r40-OKA40i-C device tree from the U-Boot repository listed above.
Tips, Tricks, Caveats
- The full-size SD card slot is bootable; the micro-SD is for storage only.
- The red DIP switch near the SoM socket changes the BROM boot priority: eMMC is tried first when the switch is in the "On" position, and the SD card first when it is off.
The "Boot" button next to the reset button triggers FEL mode.
Device specific topic
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Adding a serial port
Standard DB9 serial connector gives access to the debug UART.
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