TS-TPC-7990 Booting up the board

WARNING:

Be sure to take appropriate Electrostatic Discharge (ESD) precautions. Disconnect the power source before moving, cabling, or performing any set up procedures. Inappropriate handling may cause damage to the board.

The TS-TPC-7990 accepts either 5VDC, or 8-28VDC. A power supply should be prepared to provide 20W, but the board power consumption will typically be around 8W on an idle quad core. See the #Specifications section for further details on power requirements, differences between builds, and options to reduce power.

Once you have applied power to either the 5VDC, or 8-28VDC you should look for console output. The next section of the manual provides information on getting the console connected. The first output is from U-Boot:

U-Boot 2014.10-g9344da0 (Dec 09 2015 - 16:26:59)

CPU:   Freescale i.MX6Q rev1.2 at 792 MHz
Reset cause: POR
Board: TS-7990
       Watchdog enabled
I2C:   ready
DRAM:  1 GiB
FPGA Rev: 2
MMC:   FSL_SDHC: 0, FSL_SDHC: 1
SF: Detected N25Q64 with page size 256 Bytes, erase size 4 KiB, total 8 MiB
auto-detected panel LXD-WSVGA
Display: LXD-WSVGA (1024x600)
In:    serial
Out:   serial
Err:   serial
Net:   using phy at 7
FEC [PRIME]

If JP2 is populated the board will check for USB updates, and then stop at a u-boot console. If it is not set the board will boot immediately to the selected device.

If JP3 is populated the board will boot to SD. If it is not set it will boot to eMMC.

Note:

The "*** Warning - bad CRC, using default environment" can be safely ignored. If you "env save" this will use your environment on the disk, but on new boards the SPI flash is erased so it just doesn't have a modifed env saved.