Re: [PATCH 09/12] [v3] ARM: shmobile: r8a7791 dtsi: Enable DMA for QSPI

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On Thu, Aug 07, 2014 at 09:39:08AM +0900, Simon Horman wrote:
> On Thu, Aug 07, 2014 at 09:37:56AM +0900, Simon Horman wrote:
> > On Wed, Aug 06, 2014 at 02:59:06PM +0200, Geert Uytterhoeven wrote:
> > > Add a DMA property to the QSPI node
> > > 
> > > Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> > > Cc: devicetree@xxxxxxxxxxxxxxx
> > > ---
> > > This depends on "[PATCH v2 8/8] ARM: shmobile: r8a7791: Add DMAC devices
> > > to DT" of series "[PATCH v2 0/8] R-Car Gen2 DMA Controller driver".
> > 
> > Hi Geert, Hi Laurent,
> > 
> > Am I correct in assuming that with this patch applied things
> > will continue to work the old way until the patch above applied
> > to the same tree and from there on the user will get the new behaviour?
> > 
> > If so I think that I can take this patch as although the driver hasn't been
> > merged the relevant bindings were added to the subsystem maintainers tree
> > by "dmaengine: rcar-dmac: Add device tree bindings documentation" and are
> > available in linux-next.
> > 
> > Likewise for "[v3] ARM: shmobile: r8a7791 dtsi: Enable DMA for MSIO".
> 
> ... and "ARM: shmobile: r8a7790 dtsi: Enable DMA for QSPI"

... and "ARM: shmobile: r8a7790 dtsi: Enable DMA for MSIO"

and any other similar patches I didn't list above :)

> 
> > > v2:
> > >   - Update DMA specifiers to match the renesas,rcar-dmac bindings,
> > > v2:
> > >   - QSPI needs to use 8-bit accesses for DMA, not 32-bit,
> > >   - Reorder: TX first, RX second.
> > > ---
> > >  arch/arm/boot/dts/r8a7791.dtsi | 2 ++
> > >  1 file changed, 2 insertions(+)
> > > 
> > > diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
> > > index d59af615e365..8186c9f4a18a 100644
> > > --- a/arch/arm/boot/dts/r8a7791.dtsi
> > > +++ b/arch/arm/boot/dts/r8a7791.dtsi
> > > @@ -1044,6 +1044,8 @@
> > >  		reg = <0 0xe6b10000 0 0x2c>;
> > >  		interrupts = <0 184 IRQ_TYPE_LEVEL_HIGH>;
> > >  		clocks = <&mstp9_clks R8A7791_CLK_QSPI_MOD>;
> > > +		dmas = <&dmac0 0x17>, <&dmac0 0x18>;
> > > +		dma-names = "tx", "rx";
> > >  		num-cs = <1>;
> > >  		#address-cells = <1>;
> > >  		#size-cells = <0>;
> > > -- 
> > > 1.9.1
> > > 
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