Re: [RFC] iio: adc: support for multi-device aggregation

[Andy Shevchenko]

On Fri, May 08, 2026 at 10:27:54AM +0300, Andy Shevchenko wrote:
> On Thu, May 07, 2026 at 06:28:58PM -0300, Jonathan Santos wrote:
> > 
> > We have a request to support multiple devices tied together in a single evaluation
> > board. The goal is to be able to read them simultaneously via the IIO framework,
> > while also controlling them individually. Currently we have two ADC devices that
> > would benefit from this, but there might be more in the future.
> 
> > To summarize, the devices share SPI pins such as SCLK and MOSI, but have individual
> > chip-selects and MOSIs (we can consider individual SPI interfaces). The ideia
> > is to allow users to aggregate these devices so they can be read simultaneously
> > from the user space.
> 
> This paragraph contradicts itself. The they share the bus. The bus is serial
> and can't do at all what you are describing. Try to rephrase, or forget about
> this, it's simply impossible.

Ah, this is semi-shared bus... Interesting how the host controller looks like
for this? It's not a regular SPI.

-- 
With Best Regards,
Andy Shevchenko