Re: [PATCH v3 0/5] iio: adc: Add support for LTC2378 and similar ADCs

[David Lechner]

On 6/16/26 9:02 PM, Marcelo Schmitt wrote:
> This patch series adds support for LTC2378 and similar low noise, low power,
> high speed, successive approximation register (SAR) ADCs. These ADCs are similar
> among each other, varying mainly on the amount of precision bits, maximum sample
> rate, and input configuration (either fully differential or pseudo-differential).
> 
> The first patch adds device tree documentation for LTC2378.
> 
> The second patch enables single-shot sample read with a GPIO connected
> to the LTC2378 CNV pin.
> 
> The third patch extends IIO DMAengine buffer interface to make
> sampling_frequency and sampling_frequency_available buffer attributes.
> 
> The fourth patch enables high-speed data captures with SPI offloading.
> The setup is similar to AD4030, with a specialized PWM generator being used both
> for SPI offload triggering and conversion start signaling.
> 
> The last support patch enables running buffered data captures without SPI offloading.
> 
> Even though these parts are somewhat similar to AD4000, the wiring configuration
> for LTC parts is different as well as the available HDL for high speed sample
> rate mode. Because of that, I propose creating a new device driver for
> supporting LTC2378-like devices.
> 
> Specifications can be found at:
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/233818fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236416fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236418f.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236716fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236718f.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236816f.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236818f.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/236918fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237016fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237616fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237618fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237620fb.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237716fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237718fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237720fb.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237816fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237818fa.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237820fb.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/237918fb.pdf
> Link: https://www.analog.com/media/en/technical-documentation/data-sheets/238016fb.pdf

Putting `Link:` tags like this in the cover letter will cause b4 to apply all of these
to all patches in the series, so we don't want to do that. I think it is enough that
they are already in the code, we don't need to list them again here.