Address issue where the timing source is not stopped upon step completion
and not adjusting the actual position after performing a step.
Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
Adds a fallback for the dual-edge-step property in the step dir common
code. Without this drivers using the common code would have to declare the
dual-edge-step property so it can default to false when not set, even if
the IC does not support adjusting it.
Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
Adds a timing source api which is used by the step-dir stepper common code.
This allows the reusable common code to configure different timing sources,
since the initial delayable work implementation was inacurate for higher
maximum velocities.
Signed-off-by: Fabian Blatz <fabianblatz@gmail.com>
