Messages in this thread | | | Subject | Re: dma_declare_coherent_memory and SuperH | From | Rob Landley <> | Date | Mon, 28 Jun 2021 09:04:19 -0500 |
| |
On 6/28/21 8:38 AM, Christoph Hellwig wrote: > On Sat, Jun 26, 2021 at 05:36:08PM -0500, Rob Landley wrote: >> On 6/23/21 8:32 AM, Christoph Hellwig wrote: >> > Hi SuperH maintainers, >> > >> > I have a vague recollection that you were planning on dropping support >> > for non-devicetree platforms, is that still the case? >> >> We'd like to convert them, but have to rustle up test hardware for what _is_ >> still available. (There was some motion towards this a year or so back, but it >> petered out because pandemic and everyone got distracted halfway through.) >> >> (We should definitely START by converting the r2d board qemu emulates. :) >> >> > The reason I'm asking is because all but one users of >> > dma_declare_coherent_memory are in the sh platform setup code, and >> > I'd really like to move towards killing this function off. >> >> Understood. Is there an easy "convert to this" I could do to those callers? > > Well, the replacement is to declare the device memory carveouts in the > Device Tree.
Your plan is to eliminate the ability for non-device-tree boards to do DMA?
Rob
| |