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

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Message-ID: <CAK8P3a0HGhx3WpF-AwC+7m8+FoaiQBTYoCLqhECrATBRLX7x5g@mail.gmail.com>
Date:   Thu, 18 Jan 2018 12:02:18 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Greentime Hu <green.hu@...il.com>
Cc:     Greentime <greentime@...estech.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-arch <linux-arch@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <marc.zyngier@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Networking <netdev@...r.kernel.org>,
        Vincent Chen <deanbo422@...il.com>,
        DTML <devicetree@...r.kernel.org>,
        Al Viro <viro@...iv.linux.org.uk>,
        David Howells <dhowells@...hat.com>,
        Will Deacon <will.deacon@....com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        linux-serial@...r.kernel.org,
        Geert Uytterhoeven <geert.uytterhoeven@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Mark Rutland <mark.rutland@....com>, Greg KH <greg@...ah.com>,
        Guo Ren <ren_guo@...ky.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        David Miller <davem@...emloft.net>,
        Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Stafford Horne <shorne@...il.com>,
        Vincent Chen <vincentc@...estech.com>,
        Rick Chen <rick@...estech.com>, Zong Li <zong@...estech.com>
Subject: Re: [PATCH v6 31/36] dt-bindings: nds32 CPU Bindings

On Mon, Jan 15, 2018 at 6:53 AM, Greentime Hu <green.hu@...il.com> wrote:
> From: Greentime Hu <greentime@...estech.com>
>
> This patch adds nds32 CPU binding documents.
>
> Signed-off-by: Vincent Chen <vincentc@...estech.com>
> Signed-off-by: Rick Chen <rick@...estech.com>
> Signed-off-by: Zong Li <zong@...estech.com>
> Signed-off-by: Greentime Hu <greentime@...estech.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> ---
>  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