Allwinner A83TDevBoard

Allwinner A83TDevBoard
Manufacturer	Allwinner
Dimensions	128mm x 67mm
Release Date	May 2015
Website	N/A
Specifications
SoC	A83T @ XGhz
DRAM	1GiB DDR3 @ 672MHz (Samsung K4B4G-1646D-BCK0 * 2)
NAND	8GB eMMC (FORESEE NCFSESA8-08G)
Power	DC 5V @ 2A
Features
Video	HDMI Type A, CVBS
Audio	HDMI, RCA
Network	WiFi 802.11 b/g/n (Realtek RTL8189ETV), 10/100Mbps Ethernet (X-Powers AC200)
Storage	µSD
USB	1 USB2.0 OTG (host mode), 1 USB2.0 EHCI/OHCI
Headers	UART, IRDA

This page needs to be properly filled according to the New Device Howto and the New Device Page guide.

This is a limited edition product verification board that is used here for the purpose of mainline support of the A83T SoC.

Identification

On the front of the board, the following is printed:

H8_HOMLET_PROTO_V2_0
20141015 L4

The PCB has the following silkscreened on it:

TEAN-E120399 
94V-OML1

These markings do not have specific significance to the A83T since this is a product verification board.

Sunxi support

Current status

There is ongoing discussion at https://groups.google.com/forum/#!topic/linux-sunxi/_woM2vJmcuc regarding the mainline support of the SoC in this board.

BSP

The repository at https://github.com/allwinner-zh/bootloader contains

• BSP for the A83T, https://github.com/allwinner-zh/bootloader/tree/master/basic_loader/bsp/bsp_for_a83

Manual build

• For building U-Boot, use the MANUFACTURER_DEVICE target.
• The .fex file can be found in sunxi-boards as MANUFACTURER_DEVICE.fex

Everything else is the same as the manual build howto.

Mainline U-Boot

For building mainline U-Boot, use the 'h8_homlet_v2_defconfig' target.

The reference source code from Allwinner is at https://github.com/allwinner-zh/bootloader contains

• Boot 0 source code for the A83T, https://github.com/allwinner-zh/bootloader/tree/master/basic_loader/boot0
• U-boot 2011.09 for the A83T, https://github.com/allwinner-zh/bootloader/tree/master/u-boot-2011.09

Mainline kernel

Basic support is available in mainline kernel for A83T.

Use sun8i-a83t-allwinner-h8homlet-v2.dtb device-tree tree binary.

There is a 3.4 source tree for the A83T at https://github.com/allwinner-zh/linux-3.4-sunxi/tree/A83T

Tips, Tricks, Caveats

The following table is a comparison of the A83T SoC to other SoCs from the A-series.

Module	Description
CPU	Cortex-A7 MP4 in 2 clusters, the MCPM is more likely as the A80
CCI400	It's same as the A80
DRAMM	It's more likely as the A80
Timer	It's same as the A31 and A20
CCU	It's more likely as the A80
DMA	It's same as the A31
PinCtrl	It's same as the A31
UART	It's same as the A31 and A20
RSB	It's same as the A80 and A33
SPI	It's same as the A31 and A20
TWI	It's same as the A31 and A20
NAND	It's more likely as the A80 and A33, but the clk/dma/pin are different
SD/eMMC	It's same as the A31 and A20
USB2.0 OTG	It's same as the A31 and A20
USB HCI	It's same as the A31 and A20
USB HSIC	It's same as the A80
GMAC	It's a new IP, is more different of the platform before
Security Engine	It's same as the A80
Display Engine	It's a new IP, is more different of the platforms before

Source: Kevin@Allwinner

The following image shows the description of the modules on the board.

• 

  Description of modules on the board

FEL mode

To enter into FEL mode,

1. connect the serial console
2. keep pressing the 2 key in the serial console and at the same time switch on the board

Adding a serial port

A83T Produce verification board UART pads

The UART is located at the bottom-right of the board. The above image shows the location of GND, TX and RX. See more at the UART howto.

Locating the UART

The UART is located at the bottom-right of the board.

Pictures

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See also

• Datasheet and User Guide
• Linux 3.4 kernel source code
• U-boot 2011.09 source code
• Boot0 source code
• BSP configuration

Manufacturer images

• Linux image (81MB, SHA-256 hash: 72fdb9a18c0b9bd81fbdcc6fd486e521def625e20b089ae3a3a2f96ff5d8c99c)
• Android image (333MB, SHA-256 hash: 8239dd7db83cd578c0f0bd3de6dca884fa01333e32c1885e5b5bb1755281ceb3)