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SubjectRe: [PATCH v5 2/4] DMA: Freescale: Add new 8-channel DMA engine device tree nodes
On 07/24/2013 01:21:07 AM, hongbo.zhang@freescale.com wrote:
> From: Hongbo Zhang <hongbo.zhang@freescale.com>
>
> Freescale QorIQ T4 and B4 introduce new 8-channel DMA engines, this
> patch add
> the device tree nodes for them.
>
> Signed-off-by: Hongbo Zhang <hongbo.zhang@freescale.com>
> ---
> .../devicetree/bindings/powerpc/fsl/dma.txt | 66
> ++++++++++++++++
> arch/powerpc/boot/dts/fsl/b4si-post.dtsi | 4 +-
> arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi | 81
> ++++++++++++++++++++
> arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi | 81
> ++++++++++++++++++++
> arch/powerpc/boot/dts/fsl/t4240si-post.dtsi | 4 +-
> 5 files changed, 232 insertions(+), 4 deletions(-)
> create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-0.dtsi
> create mode 100644 arch/powerpc/boot/dts/fsl/elo3-dma-1.dtsi
>
> diff --git a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> index ed703d9..54a023b2 100644
> --- a/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> +++ b/Documentation/devicetree/bindings/powerpc/fsl/dma.txt
> @@ -130,6 +130,72 @@ Example:
> };
> };
>
> +** Freescale Elo3 DMA Controller
> + This is EloPlus controller with 8 channels, used in Freescale
> Txxx and Bxxx
> + series chips, such as t1040, t4240, b4860.
> +
> +Required properties:
> +
> +- compatible : should be "fsl,elo3-dma"

Should include "fsl,elo3-dma". There's nothing different about elo3
versus elo/eloplus regarding whether fsl,CHIP-dma is allowed. I'd just
drop the references to fsl,CHIP-dma throughout the binding, and phrase
the compatible description as "must include" rather than "must be" so
that additional strings are allowed.

-Scott


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