linux-kernel - Re: [PATCH v3 00/12] iio: adc: ad7173: add SPI offload support

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Message-ID: <aGToIInJLMHmB4ay@smile.fi.intel.com>
Date: Wed, 2 Jul 2025 11:04:48 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: David Lechner <dlechner@...libre.com>
Cc: Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Mark Brown <broonie@...nel.org>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-spi@...r.kernel.org
Subject: Re: [PATCH v3 00/12] iio: adc: ad7173: add SPI offload support

On Tue, Jul 01, 2025 at 04:37:48PM -0500, David Lechner wrote:
> Here comes another series for adding SPI offload support to an ADC.
> 
> The primary target is AD411x, but since this uses the ad_sigma_delta
> shared module, a lot of this series is focused on that.
> 
> To start with, we have some cleanups to the ad_sigma_delta code, so feel
> free to pick these up as they are ready as they generally stand on their
> own.
> 
> Then before adding proper SPI offload support, we make use of
> spi_optimize_message() to reduce CPU usage of all users of this driver
> during buffered reads.
> 
> Also there is a new dt-binding and driver for a special SPI offload
> trigger FPGA IP core that is used in this particular setup.
> 
> Then finally actual SPI offload support is added to the ad_sigma_delta
> module and the ad7173 driver.
> 
> This was tested using EVAL-AD4112ARDZ on a DE10-Nano.

This version LGTM,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>

-- 
With Best Regards,
Andy Shevchenko