timbgpio: add support for interrupt triggering on both flanks
Introduce support for triggering interrupts on both rising and falling edge. This feature requires version 3 or newer of the IP, a version check is done when triggering on both edges is requested. Signed-off-by: NRichard Röjfors <richard.rojfors@pelagicore.com> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: NAndrew Morton <akpm@linux-foundation.org> Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
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