On Tue, Sep 24, 2019 at 9:55 AM Hagen SANKOWSKI hsank@posteo.de wrote:

The main difference between AMBI AXI and Wishbone is the streaming capability. AXI can stream data, just with repetition stages, without handshake signals. So, it would be easier and more sustainable to bring-up Wishbone to the next level by standardize a similar streaming feature. And yes, there are a lot of cores which using AMBA AXI which had to be partly re-written for Wishbone. But currently, there is no alternative, or as the German chancellor Merkel likes to say: "alternativlos". With added streaming feature to Wishbone, we would get an alternative full-featured SoC Bus and Designers could fix their bad AMBA AXI bus interfaces..

great: this sounds like a perfect *additional* Research Project which someone [else] could put in a request for funding. once it is available, we can look at converting the code over to use it, and converting any peripherals to use it.

or, if someone [else] wants to include the Libre RISC-V SoC peripheral set as a possible suite of examples to convert (which would help justify a budget of EUR 50,000) they are welcome to do so.

the relevance of the streaming capability is that we need an I2S Audio Bus.

i can help with a write-up: unfortunately i am hitting an _additional_ limit of EUR 250,000 per person for overall projects submitted, so cannot be the one to submit it.

l.