linux-kernel - Re: [PATCH v3 1/3] dt-bindings: arm: amlogic: Add SoC information bindings

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Date:   Thu, 22 Jun 2017 16:24:49 -0500
From:   Rob Herring <robh@...nel.org>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     khilman@...libre.com, carlo@...one.org,
        linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v3 1/3] dt-bindings: arm: amlogic: Add SoC information
 bindings

On Wed, Jun 14, 2017 at 02:05:44PM +0200, Neil Armstrong wrote:
> Add bindings for the SoC information register of the Amlogic SoCs.
> 
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
> ---
>  Documentation/devicetree/bindings/arm/amlogic.txt | 29 +++++++++++++++++++++++
>  1 file changed, 29 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/amlogic.txt b/Documentation/devicetree/bindings/arm/amlogic.txt
> index 5c01e65..a6d8754 100644
> --- a/Documentation/devicetree/bindings/arm/amlogic.txt
> +++ b/Documentation/devicetree/bindings/arm/amlogic.txt
> @@ -60,3 +60,32 @@ Board compatible values (alphabetically, grouped by SoC):
>    - "amlogic,q201" (Meson gxm s912)
>    - "kingnovel,r-box-pro" (Meson gxm S912)
>    - "nexbox,a1" (Meson gxm s912)
> +
> +Amlogic Meson Firmware registers Interface
> +------------------------------------------
> +
> +The Meson SoCs have a register bank with status and data shared with the
> +secure firmware.
> +
> +Required properties:
> + - compatible: For Meson GX SoCs, must be "amlogic,meson-gx-ao-secure", "syscon"
> +
> +Properties should indentify components of this register interface :
> +
> +Meson GX SoC Information
> +------------------------
> +A firmware register encodes the SoC type, package and revision information on
> +the Meson GX SoCs.
> +If present, the following property should be added :
> +
> +Optional properties:
> +  - has-chip-id: If present, the interface gives the current SoC version.

amlogic,has-chip-id

With that,

Acked-by: Rob Herring <robh@...nel.org>

> +
> +Example
> +-------
> +
> +ao-secure@140 {
> +	compatible = "amlogic,meson-gx-ao-secure", "syscon";
> +	reg = <0x0 0x140 0x0 0x140>;
> +	has-chip-id;
> +};
> -- 
> 1.9.1
> 
> --
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