[vvanders]

Not always the case that you need the pin count, a good number of SPI devices support daisy chaining[1].

[1] https://www.maximintegrated.com/en/design/technical-document...

[fra]

Cool! I've never seen this before.

[amelius]

The downside is of course that you need a lot of clock cycles before the data reaches the corresponding device, which makes this too inefficient for certain applications.