On Thursday 05 May 2022 10:40:09 Rob Herring wrote: > On Wed, May 4, 2022 at 1:09 PM Pali Rohár <p...@kernel.org> wrote: > > > > DT law_trgt_if property defines Local Access Window Target Interface. > > Documentation?
I was not able to find it :-( So the only documentation for me was the source code and decoding how it works and how it is used. > fsl,law-trgt-if would be the preferred form. > > > Local Access Window Target Interface is used for identifying individual > > peripheral and mapping its memory to CPU. Interface id is defined by > > hardware itself. > > Normally, we avoid instance indices like this, but if it is more than > just documentation convention maybe that's fine. > > Rob It is id defined by HW. Software needs to know how to pair DT node with address range defined in "ranges" to the correct HW PCIe controller.
