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We only need the power interface when placing the chip in the lowest
power state, so don't power up the power interface clock at startup,
instead wait until later.
Signed-off-by: Keith Packard <keithp@keithp.com>
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This provides nano-second resolution times by reading the systick
value (which runs at 250ns ticks on stm).
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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This was used to try and not have two xtals on telemini, but failed
because the provided clock has too much noise.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Allows the use of crystals instead of requiring USB.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Allow USB suspend to suspend USB, GPIOs and master clock.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Signed-off-by: Keith Packard <keithp@keithp.com>
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Also moves the usual address for applications out of the way of the
flash loader.
Signed-off-by: Keith Packard <keithp@keithp.com>
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Basic clock configuration, OS support, LED and USB drivers.
Signed-off-by: Keith Packard <keithp@keithp.com>
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