Re: [PATCH v2] ARM: dts: add "simple-bus" where "arm,amba-bus" is used alone

[Rob Herring]

On Mon, Mar 7, 2016 at 11:46 PM, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
> The compatible string "simple-bus" is well defined in ePAPR, while
> I see no documentation for the "arm,amba-bus" in ePAPR or under
> Documentation/devicetree/.
>
> DT is also used by other projects than Linux kernel.  It is not a
> good idea to rely on such an unofficial binding.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
> ---
>
> Changes in v2:
>   - Rephrase the git-log

[...]

> diff --git a/arch/arm/boot/dts/axm55xx.dtsi b/arch/arm/boot/dts/axm55xx.dtsi
> index ea288f0..8da4582 100644
> --- a/arch/arm/boot/dts/axm55xx.dtsi
> +++ b/arch/arm/boot/dts/axm55xx.dtsi
> @@ -107,7 +107,7 @@
>                 };
>
>                 amba {
> -                       compatible = "arm,amba-bus";
> +                       compatible = "arm,amba-bus", "simple-bus";

As I mentioned in the last version, I think you should remove
arm,amba-bus and just have simple-bus. I don't believe anything relies
on having arm,amba-bus.

Rob