[PATCH v9 6/6] pwm: airoha: Add support for EN7581 SoC

[Benjamin Larsson]

Hi.

On 2024-10-30 08:32, Uwe Kleine-König wrote:
>
>> + *  Limitations:
>> + *  - No disable bit, so a disabled PWM is simulated by setting duty_cycle to 0
>> + *  - Only 8 concurrent waveform generators are available for 8 combinations of
>> + *    duty_cycle and period. Waveform generators are shared between 16 GPIO
>> + *    pins and 17 SIPO GPIO pins.
>> + *  - Supports only normal polarity.
>> + *  - On configuration the currently running period is completed.
> Maybe I already asked before: Is there a public manual? If so, please
> add a link here.

Currently there is no public manual for this. And the existing manual is 
not that detailed.



>
>> +	/* Configure frequency divisor */
>> +	mask = WAVE_GEN_CYCLE_MASK(index % 4);
>> +	val = (period << __ffs(mask)) & mask;
> FIELD_PREP please.

Per my understanding FIELD_PREP only work on compile time constants.

MvH

Benjamin Larsson