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>
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
