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doc: release notes: Update contents for 2.2

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List the added PWM API flags parameter under changes to stable APIs
for the 2.2 release.

Signed-off-by: Henrik Brix Andersen <hebad@vestas.com>
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Henrik Brix Andersen 2019-12-18 15:40:45 +01:00 • committed by Carles Cufí
commit d9d4082325
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doc/releases/release-notes-2.2.rst
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@ -27,6 +27,19 @@ Deprecated in this release
Stable API changes in this release
==================================
* PWM
* The pwm_pin_set_cycles(), pwm_pin_set_usec(), and
pwm_pin_set_nsec() functions now take a flags parameter. The newly
introduced flags are PWM_POLARITY_NORMAL and PWM_POLARITY_INVERTED
for specifying the polarity of the PWM signal. The flags parameter
can be set to 0 if no flags are required (the default is
PWM_POLARITY_NORMAL).
* Similarly, the pwm_pin_set_t PWM driver API function function now
takes a flags parameter. The PWM controller driver must check the
value of the flags parameter and return -ENOTSUP if any
unsupported flag is set.
* USB
* The usb_enable() function, which was previously invoked automatically