On Mon, Jun 04, 2018 at 02:32:41PM -0400, Thomas Hebb wrote: > Six of the eight prescaler values available for Berlin PWM are not true > prescalers but rather internal shifts that throw away the high bits of > TCNT. Currently, we attempt to use those high bits, leading to erratic > behavior. Restrict the prescaler configurations we select to only the > two that respect the full range of TCNT. > > Tested on BG2CD. > > Signed-off-by: Thomas Hebb <[email protected]> > --- > drivers/pwm/pwm-berlin.c | 45 ++++++++++++++++++++++------------------ > 1 file changed, 25 insertions(+), 20 deletions(-)
Antoine, Jisheng, can you guys review this patch? I'm personally on the fence about this, even if we can technically do the shift in software, I don't necessarily see a reason why we can't "offload" to the hardware. Thierry
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