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U-boot SPL power off after 7 seconds #10

Closed khozaei closed 4 years ago

khozaei commented 4 years ago

The u-boot SPL working in falcon mode after flashing it using dfu-util and then reset the board, but when the board is set ON, the u-boot SPL showing following message and after 7 seconds the board automatically powering off.

U-Boot SPL 2019.07-rc4-dirty (Mar 27 2020 - 01:04:53 +0430)

DRA752-GP ES2.0

Trying to boot from MMC2_2

no pinctrl state for default mode

no pinctrl state for default mode

Loading Environment from MMC... OK

If I press c and set ON the board, it goes to u-boot and the board state is stable. How to fix it?

RobertCNelson commented 4 years ago

@khozaei which board?

khozaei commented 4 years ago

AM5728 EVM

RobertCNelson commented 4 years ago

@khozaei see Page 3 of https://github.com/beagleboard/beagleboard-x15/blob/master/BEAGLEBOARD_X15_REV_B1.pdf

"Insert wire here to enable use of the JTAG without boot image present. Otherwise board will power off."...

Your SPL build, doesn't reach u-boot.img fast enough, so the board shuts down..

Regards,

khozaei commented 4 years ago

Thank you so much.

RobertCNelson commented 4 years ago

@khozaei it's a built-in safety feature, so the am57xx doesn't fry..