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+Lite5200B wakeup from low-power mode (CONFIG_LITE5200B_PM)
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+----------------------------------------------------------
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+
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+Low-power mode as described in Lite5200B User's Manual, means that
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+with support of MC68HLC908QT1 microcontroller (refered to as QT),
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+everything but the SDRAM can be powered down. This brings
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+maximum power saving, while one can still restore previous state
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+quickly.
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+
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+Quick overview where U-Boot comes into the picture:
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+- OS saves device states
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+- OS saves wakeup handler address to physical 0x0, puts SDRAM into
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+ self-refresh and signals to QT, it should power down the board
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+- / board is sleeping here /
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+- someone presses SW4 (connected to QT)
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+- U-Boot checks PSC2_4 pin, if QT drives it down, then we woke up,
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+ so get SDRAM out of self-refresh and transfer control to OS
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+ wakeup handler
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+- OS restores device states
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+
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+This was tested on Linux with USB and Ethernet in use. Adding
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+support for other devices is an OS issue.
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Domen Puncer