linux-kernel - Re: [PATCH v24] pwm: airoha: Add support for EN7581 SoC

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Message-ID: <d7muk67gsfgrz7ykw57gq5koepa6c3sjt2kqbalcudmilux4fp@yueqgglt4aon>
Date: Sat, 1 Nov 2025 08:48:37 +0100
From: Uwe Kleine-König <ukleinek@...nel.org>
To: Christian Marangi <ansuelsmth@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org, 
	Benjamin Larsson <benjamin.larsson@...exis.eu>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, Lorenzo Bianconi <lorenzo@...nel.org>, 
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v24] pwm: airoha: Add support for EN7581 SoC

Hello Christian,

On Mon, Oct 13, 2025 at 12:34:03PM +0200, Christian Marangi wrote:
> From: Benjamin Larsson <benjamin.larsson@...exis.eu>
> 
> Introduce driver for PWM module available on EN7581 SoC.
> 
> Limitations:
> - 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.
> - Minimum supported period is 4 ms
> - Maximum supported period is 1s
> 
> Signed-off-by: Benjamin Larsson <benjamin.larsson@...exis.eu>
> Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
> Co-developed-by: Lorenzo Bianconi <lorenzo@...nel.org>
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> Co-developed-by: Christian Marangi <ansuelsmth@...il.com>
> Signed-off-by: Christian Marangi <ansuelsmth@...il.com>

I still have the impression that the bucket selection is more
complicated than necessary, but I don't want to delay this patch
further, so I applied it to
https://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux.git pwm/for-next
as 6.19-rc1 material.

Thanks for your perseverance,
Uwe

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