On Thu, Apr 28, 2022 at 11:09 AM Geert Uytterhoeven
<geert@xxxxxxxxxxxxxx> wrote:
> On Thu, Apr 21, 2022 at 11:53 AM Miquel Raynal
> <miquel.raynal@xxxxxxxxxxx> wrote:
> > UART 0 to 2 do not have DMA support, while UART 3 to 7 do.
> >
> > Fill the "dmas" and "dma-names" properties for each of these nodes.
> >
> > Please mind that these nodes go through the dmamux node which will
> > redirect the requests to the right DMA controller. The first 4 cells of
> > the "dmas" properties will be transferred as-is to the DMA
> > controllers. The last 2 cells are consumed by the dmamux. Which means
> > cell 0 and 4 are almost redundant, one giving the controller request ID
> > and the other the dmamux channel which is a 1:1 translation of the
> > request IDs, shifted by 16 when pointing to the second DMA controller.
> >
> > Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Queuing in renesas-devel for v5.19.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
