AM62p SK EVM

Introduction

The AM62p starter kit (SK) evaluation module (EVM) is a stand-alone test and development platform built around the AM62p (SoC).

The AM62p is only available in HS-FS (High Secure, Field Securable). There are no GP (Global Purpose) variants for AM62p.

Initial flashing procedure

Flashing Android the first time requires booting from DFU.

First, make sure to install snagboot following the official instructions

Make sure to install the udev rules as documented:

$ snagrecover --udev > 50-snagboot.rules
$ sudo cp 50-snagboot.rules /etc/udev/rules.d/
$ sudo udevadm control --reload-rules
$ sudo udevadm trigger

Then, the following steps are required:

Change BOOTMODE DIP switches for DFU (USB) boot:

Switch Label

SW2: 12345678

SW3: 12345678

USB DFU

00000000

11001010
Ensure the device is plugged in with USB Host and Debug UART/Serial Debug.
Open a terminal debugger to view console output from the device:
```
$ sudo picocom -b 115200 -r -l /dev/ttyUSB0
```

Run snagrecover

# for AM62p SK EVM (HS-FS only)
$ snagrecover -s am625 -f ./am62px-sk-evm-hsfs.yaml

In the serial console, you will see some logs ending with:

SYSFW ABI: 3.1 (firmware rev 0x0009 '9.0.5--v09.00.05 (Kool Koala)')
SPL initial stack usage: 1856 bytes
MMC: no card present
** Bad device specification mmc 1 **
Couldn't find partition mmc 1:1
Error: could not access storage.
Trying to boot from DFU

Type Ctrl-C in the serial console to continue to U-Boot. Then hit any key to halt on the U-Boot prompt.

Make sure the default U-Boot environment is configured
```
=> env default -a -f
=> saveenv
```
Start fastboot
```
=> fastboot usb 0
```

In a different terminal, change directory to out/target/product/am62p and run the flashall.sh script:

$ cd out/target/product/am62p

# For AM62P SK EVM (HS-FS only: by default)
$ sudo ./flashall.sh --board am62px-sk

Change Boot mode DIP switches to boot from eMMC UDA mode and power cycle the board:

Switch Label

SW2: 12345678

SW3: 12345678

EMMC (with UDA)

00000000

11000010

Device Tree Overlays

Device Tree Overlays (DTBO) can be enabled from U-Boot when extra peripherals are connected to the board. DTBOs are board specific. To configure dtbos, reboot to the U-Boot console and set the adtbo_idx environment variable.

=> env set adtbo_idx '2'
=> saveenv

Note

Enabling multiple DTBOs is not supported.

Here is the list of adtbo_idx that is supported on AM62p SK EVM:

Index	Description
0	HDMI audio output (bridge by shorting a (J24) header on the board.)
1	Digilent PCam 5C OV5640 Camera
2	TEVI-OV5640C-S84-IR-RPI Camera
4	Enable MAIN and MCU GPIO + CANUART wakeup source
9	4x MCAN interfaces (requires external CAN transceivers)
10	Microtips Technology USA 10.1” WUXGA (1920x1200) OLDI panel
12	M.2-CC3301 WiFi board on the M.2 connector
14	RPi 7inch touchscreen DSI panel

Additional connectors

The EVK includes multiple external connectors such as DSI, CSI and LVDS. Below is an overview with pictures on how to connect them.

RPi touchscreen via DSI