[PATCH v2 4/7] of: address: Add support for the dma-parent property
Maxime Ripard
maxime.ripard at bootlin.com
Mon Feb 11 13:09:15 UTC 2019
On Wed, Feb 06, 2019 at 02:57:51PM -0600, Rob Herring wrote:
> On Wed, Feb 6, 2019 at 1:42 PM Maxime Ripard <maxime.ripard at bootlin.com> wrote:
> >
> > Some SoCs have devices that are using a separate bus from the main bus to
> > perform DMA.
> >
> > These buses might have some restrictions and/or different mapping than from
> > the CPU side, so we'd need to express those using the usual dma-ranges, but
> > using a different DT node than the node's parent.
> >
> > Add support for a dma-parent property that links to the DMA bus used by the
> > device in such a case.
>
> ?? dma-parent is gone now, right? And I see #dma-parent-cells?
Urgh, right... I forgot to update the commit log, I'll resend it.
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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