Add capture functionality to OMAP pwm driver
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Cover letter [PATCH 0/5] Add capture functionality to OMAP pwm driver
Quoted 8 lines · Tony Lindgren
Quoted 3 lines · Ladislav Michl
Tony, I wanted to do something easy to understand as a base for event capture interrupt, but either I do not understand hardware, or it indeed cannot do pulse capture.
Hmm OK. Presumably it works as it's been around for a long time, I thought any edge trigger will just sample the current counter value and that's it..
Yes, indeed, _any_ edge will just sample the current counter value. So what can hardware say about duty cycle of this signal?
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Depending time capture was started it will either trigger on first falling or first rising edge.
ladis