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TMDS62LEVM: Error controlling LED9 with sysfs LED interface

Part Number: TMDS62LEVM
Other Parts Discussed in Thread: AM62L

Tool/software:

Hello,

I'm following this instructions with our new AM62L EVM and see the expected output when listing the available leds:

ls /sys/class/leds
am62-sk:green:heartbeat  mmc0::  mmc1::

However I'm unable to control the led with the commands:

echo 1 > /sys/class/leds/am62-sk:green:heartbeat/brightness 
echo 0 > /sys/class/leds/am62-sk:green:heartbeat/brightness
echo none > /sys/class/leds/am62-sk:green:heartbeat/trigger

The led appears to stay in the default heartbeat mode and continues blinking. I'm using the SDK default image without any modifications to the device tree. I've tried booting from both SD and TFTP/NFS but the behavior is the same. SDK version is 11.00.05.02

Is there something I'm missing, or are there any suggestion of what could be causing this?

Thanks in advance