Re: [PATCH v6 31/36] dt-bindings: nds32 CPU Bindings

[Arnd Bergmann]

On Mon, Jan 15, 2018 at 6:53 AM, Greentime Hu <green.hu@xxxxxxxxx> wrote:
> From: Greentime Hu <greentime@xxxxxxxxxxxxx>
>
> This patch adds nds32 CPU binding documents.
>
> Signed-off-by: Vincent Chen <vincentc@xxxxxxxxxxxxx>
> Signed-off-by: Rick Chen <rick@xxxxxxxxxxxxx>
> Signed-off-by: Zong Li <zong@xxxxxxxxxxxxx>
> Signed-off-by: Greentime Hu <greentime@xxxxxxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/nds32/cpus.txt |   37 ++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nds32/cpus.txt
>
> diff --git a/Documentation/devicetree/bindings/nds32/cpus.txt b/Documentation/devicetree/bindings/nds32/cpus.txt
> new file mode 100644
> index 0000000..9a52937
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nds32/cpus.txt
> @@ -0,0 +1,37 @@
> +* Andestech Processor Binding
> +
> +This binding specifies what properties must be available in the device tree
> +representation of a Andestech Processor Core, which is the root node in the
> +tree.
> +
> +Required properties:
> +
> +       - compatible:
> +               Usage: required
> +               Value type: <string>
> +               Definition: should be one of:
> +                       "andestech,n13"
> +                       "andestech,n15"
> +                       "andestech,d15"
> +                       "andestech,n10"
> +                       "andestech,d10"
> +                       "andestech,nds32v3"

Based on https://lkml.org/lkml/2017/11/27/1290, this should say that
the device tree should always list 'andestech,nds32v3' as the most
generic 'compatible' value and list exactly one of the others in
addition.

       Arnd