RE: [PATCH v18 4/5] dt-bindings: remoteproc: Add documentation for ZynqMP R5 rproc bindings

[Stefano Stabellini]

On Thu, 8 Oct 2020, Ben Levinsky wrote:
> > Does it mean that the main CPU see the memory of the
> > R5 as "some kind of TCM" and that TCM is physically
> > mapped at 0xffe00000 (ITCM) and 0xffe20000 (DTCM)?
> > 
> > If the first is ITCM and the second DTCM that is pretty
> > important to point out, since this reflects the harvard
> > architecture properties of these two memory areas.

Hi Linus,

I don't think Xilinx TCMs are split in ITCM and DTCM in the way you
describe here: https://www.kernel.org/doc/Documentation/arm/tcm.txt.
Either TCM could be used for anything. See
https://www.xilinx.com/support/documentation/user_guides/ug1085-zynq-ultrascale-trm.pdf
at page 82.