Could you maybe elaborate a bit of how the power is controlled in the
ARM dev boards? Would it be possible to control such a switch in "GPIO"
manner instead? For example via the vdd_handler or similar?
I will also think if and see if is feasible to re-design and see if this
hole feature can be controlled by the variant struct instead. My feeling
is although it can be kind of messy. But let's see...
The MCIPWR register contains two bits to control _the_ _power_ _state_.
See Table A-4: the MCIPWR signal. See section 2.2.2. See section 3.3.1.
The MCIPWR signal controls the external power switch. This is the only
signal for it. This is the only connection for it. There is no other
control form for this power switch.
Then we are only left to use the variant struct I believe. In principle,
a flag in the variant struct, could indicate whether it is OK to disable
the vcore regulator and thus clear the MCIPWR when doing runtime_suspend.
How do you feel about this kind of approach to find a solution?
BR
Ulf Hansson
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