Re: [PATCH v2 0/4] iio: adc: ad4080: add support for AD4880 dual-channel ADC

[Andy Shevchenko]

On Fri, Feb 06, 2026 at 06:07:12PM +0200, Antoniu Miclaus wrote:
> Add support for the AD4880, a dual-channel 20-bit 40MSPS SAR ADC from
> the same family as AD4080.
> 
> The AD4880 has two independent ADC channels, each with its own SPI
> configuration interface and LVDS data output. The driver uses
> spi_new_ancillary_device() for the second channel's SPI and requires
> two io-backend instances for the data interfaces.

I believe there is a better approach, what you need is rather a flag
to SPI core to tell that this is the device with shared CS.

-- 
With Best Regards,
Andy Shevchenko