Question regarding PWM types in AST2500

[Jaghathiswari Rankappagounder Natarajan]

There are 3 types of PWM - type M, type N, type O given in aspeed

ast2500 datasheet(page 671). From this link I see that there are 3 types of

PWM : https://en.wikipedia.org/wiki/Pulse-width_modulation#Types

How to find which type is related to which definition? In the data sheet
they
have also given rising and falling bit. If the type is not fixed for a

particular definition, do we need to use these two bits to make the pwm
type
behave as per the wiki definition.

Thanks,
Jagha
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