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How to control POWER_ON pin of TPS65070 by U-Boot and Linux [OMAP-L138]

Wojciech
Prodigy 60 points
Other Parts Discussed in Thread: OMAP-L138, TPS65070

We designed PCB board with OMAP-L138 supplied by TPS65070. We connected TPS65070 to OMAP-L138 as in OMAP L138 SOM M1 scheme:

As you see the POWER_ON signal is always pulled-high, so we  removed R166 resistor. The PMIC_PWR_ON is connected to OMAP-L138 GPIO2[2] signal.

1. Is is possible to control the state of POWER_ON signal by U-Boot (when the OMAP-L138 is starting) in order to sustain TPS65070.
2. Is it possible to control  the state of POWER_ON signal by Linux (when the system is shutdown by "poweroff" or "shutdown now" Linux shell command) in order to switch-off TPS65070?