Re: [PATCH v4 0/3] gpio: mvebu: Armada 8K/7K PWM support

Russell King - ARM Linux admin
2021-01-04T09:30:24Z

On Thu, Dec 10, 2020 at 02:15:57PM +0200, Baruch Siach wrote:
> This series makes two changes to v3:
>
> * Remove patches that are in LinusW linux-gpio for-next and fixes
>
> * Rename the 'pwm-offset' property to 'marvell,pwm-offset' as suggested by
> Rob Herring
>
> The original cover letter follows (with DT property name updated).
>
> The gpio-mvebu driver supports the PWM functionality of the GPIO block for
> earlier Armada variants like XP, 370 and 38x. This series extends support to
> newer Armada variants that use CP11x and AP80x, like Armada 8K and 7K.
>
> This series adds adds the 'marvell,pwm-offset' property to DT binding.
> 'marvell,pwm-offset' points to the base of A/B counter registers that
> determine the PWM period and duty cycle.
>
> The existing PWM DT binding reflects an arbitrary decision to allocate the A
> counter to the first GPIO block, and B counter to the other one. In attempt to
> provide better future flexibility, the new 'marvell,pwm-offset' property
> always points to the base address of both A/B counters. The driver code still
> allocates the counters in the same way, but this might change in the future
> with no change to the DT.
>
> Tested AP806 and CP110 (both) on Armada 8040 based system.

Did you see the patches I sent during the last year doing this and
adding support for the fan on the GT-8k?

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