On Tue, 2014-05-20 at 09:40 -0300, Emilio López wrote:
> El 24/04/14 11:22, Maxime Ripard escribió:
> > The Allwinner A31 has a 16 channels DMA controller that it shares with the
> > newer A23. Although sharing some similarities with the DMA controller of the
> > older Allwinner SoCs, it's significantly different, I don't expect it to be
> > possible to share the driver for these two.
> >
> > The A31 Controller is able to memory-to-memory or memory-to-device transfers on
> > the 16 channels in parallel.
...
> > diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
> > index 5c5863842de9..360a10c71388 100644
> > --- a/drivers/dma/Kconfig
> > +++ b/drivers/dma/Kconfig
> > @@ -361,6 +361,14 @@ config FSL_EDMA
> > multiplexing capability for DMA request sources(slot).
> > This module can be found on Freescale Vybrid and LS-1 SoCs.
> >
> > +config DMA_SUN6I
> > + tristate "Allwinner A31 SoCs DMA support"
> > + depends on ARCH_SUNXI
> > + select DMA_ENGINE
> > + select DMA_VIRTUAL_CHANNELS
>
> I think you also need to select DMA_OF here as you are using
> of_dma_controller_register
of_dma_controller_register should have a stub (which it does).
No need to have such a dependency.
--
Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Intel Finland Oy
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