[PATCH v3] pwm: imx-tpm: Use correct MODULO value for EPWM mode

[Uwe Kleine-König]

Hello,

On Fri, Oct 25, 2024 at 08:37:00AM +0000, Erik Schumacher wrote:
> The modulo register defines the period of the edge-aligned PWM mode
> (which is the only mode implemented). The reference manual states:
> "The EPWM period is determined by (MOD + 0001h) ..." So the value that
> is written to the MOD register must therefore be one less than the
> calculated period length. Return -EINVAL if the calculated length is
> already zero.
> A correct MODULO value is particularly relevant if the PWM has to output
> a high frequency due to a low period value.
> 
> Fixes: 738a1cfec2ed ("pwm: Add i.MX TPM PWM driver support")
> Cc: stable at vger.kernel.org
> Signed-off-by: Erik Schumacher <erik.schumacher at iris-sensing.com>

Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux.git pwm/fixes

I let it sit there for a few days to get some coverage in next and then
intend to send it to Linus for mainline inclusion ~ mid of next week.

Best regards
Uwe
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