Re: [PATCH 5/7] spi: fsi: Implement restricted size for certain controllers

On Thu, Aug 20, 2020 at 12:02:26PM -0500, Eddie James wrote:

Some of the FSI-attached SPI controllers cannot use the loop command in
programming the sequencer due to security requirements. Add a boolean
devicetree property that describes this condition and restrict the
size for these controllers. Also, add more transfers directly in the
sequence up to the length of the sequence register.

If there is one difference between implementations of the controller
there are likely to be more - why have a property here rather than use
compatible strings for the different hardware variants?  Compatible
strings mean that as more differences are discovered existing DTs
continue to work.