linux-kernel - Re: [PATCH v2 2/5] iio: adc: ad4000: Add support for SPI offload

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Message-ID: <336f3db7-6f8d-4eab-b28e-c8389a3d05c0@baylibre.com>
Date: Fri, 21 Mar 2025 15:11:59 -0500
From: David Lechner <dlechner@...libre.com>
To: Marcelo Schmitt <marcelo.schmitt1@...il.com>
Cc: Marcelo Schmitt <marcelo.schmitt@...log.com>, linux-iio@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org, jic23@...nel.org,
 lars@...afoo.de, Michael.Hennerich@...log.com, corbet@....net
Subject: Re: [PATCH v2 2/5] iio: adc: ad4000: Add support for SPI offload

On 3/21/25 2:54 PM, Marcelo Schmitt wrote:
> On 03/20, David Lechner wrote:
>> On 3/19/25 9:57 AM, Marcelo Schmitt wrote:
>>> FPGA HDL projects can include a PWM generator in addition to SPI-Engine.
>>> The PWM IP is used to trigger SPI-Engine offload modules that in turn set
>>> SPI-Engine to execute transfers to poll data from the ADC. That allows data
>>> to be read at the maximum sample rates. Also, it is possible to set a
>>> specific sample rate by setting the proper PWM duty cycle and related state
>>> parameters, thus allowing an adjustable ADC sample rate when a PWM (offload
>>> trigger) is used in combination with SPI-Engine.
>>>
>>> Add support for SPI offload.
>>>
>>> Signed-off-by: Marcelo Schmitt <marcelo.schmitt@...log.com>
>>> ---
>>
>> I'm surprised I'm not on the CC for this series. scripts/get_maintainer.pl should
>> have picked me up due to K: spi_offload which matches this patch.
> 
> get_maintainers doesn't list you if run over ad4000.c.
> If run over the patch file, get_maintainers lists many developers. Some of them
> don't seem to be related to this series, so I cropped the list to avoid churn.
> Will CC you on the next versions.
> 
I use b4 these days, but IIRC, I used to use the --no-git-fallback option of
get_maintainer.pl to prune the list while keeping actual matches from the
MAINTAINERS file that shouldn't be pruned.