Re: [PATCH v2 1/3] dt-bindings: Add DT binding for NVIDIA Tegra AHB DMA controller

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On 04/10/17 00:58, Dmitry Osipenko wrote:
> Document DT binding for the NVIDIA Tegra AHB DMA controller that presents
> on Tegra20/30 SoC's.
> 
> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> ---
>  .../bindings/dma/nvidia,tegra20-ahbdma.txt         | 23 +++++++++
>  include/dt-bindings/dma/tegra-ahb-dma.h            | 56 ++++++++++++++++++++++
>  2 files changed, 79 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
>  create mode 100644 include/dt-bindings/dma/tegra-ahb-dma.h
> 
> diff --git a/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
> new file mode 100644
> index 000000000000..9fa393766930
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/dma/nvidia,tegra20-ahbdma.txt
> @@ -0,0 +1,23 @@
> +* NVIDIA Tegra AHB DMA controller
> +
> +Required properties:
> +- compatible:	Must be "nvidia,tegra20-ahbdma"

Typically, we have a list here indicating what the compatible string
should be for the supported devices. So maybe we want something like ...

- compatible : Should contain one of the following:
  - "nvidia,tegra20-ahbdma": for Tegra20
  - "nvidia,tegra30-ahbdma", "nvidia,tegra20-ahbdma": for Tegra30

Please note that even thought the driver may only currently define the
compatible string "nvidia,tegra20-ahbdma", adding
"nvidia,tegra30-ahbdma" in the dts for Tegra30 is good practice if a
bug/difference is found later on.

Cheers
Jon

-- 
nvpublic
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