[RFC 5/5] pwm: pwm-omap-dmtimer: Add capture functionality

[Tony Lindgren]

* Ladislav Michl <ladis at linux-mips.org> [180108 15:46]:
> Here it seems hardware can capture both edges, but I do not see a way
> how to tell it I want start from either low to high or high to low
> transition. Clues?

At least dm3730 TRM documents TCM bits [9:8] for TCLR, but you
probably know that already..

If you're having hard time getting things starting, maybe something
like this helps:

stop timer in TCLR register
configure timer in TCLR
write some value to TLDR, maybe 0?
set ST bit in TCLR to start

Regards,

Tony