linux-kernel - Re: [PATCH v3 1/4] dt-bindings: power: add Amlogic secure power domains bindings

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Message-ID: <20191029020125.GA11182@bogus>
Date:   Mon, 28 Oct 2019 21:01:25 -0500
From:   Rob Herring <robh@...nel.org>
To:     Jianxin Pan <jianxin.pan@...ogic.com>
Cc:     Kevin Hilman <khilman@...libre.com>,
        linux-amlogic@...ts.infradead.org,
        Neil Armstrong <narmstrong@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        Jian Hu <jian.hu@...ogic.com>,
        Hanjie Lin <hanjie.lin@...ogic.com>,
        Victor Wan <victor.wan@...ogic.com>,
        Xingyu Chen <xingyu.chen@...ogic.com>
Subject: Re: [PATCH v3 1/4] dt-bindings: power: add Amlogic secure power
 domains bindings

On Fri, Oct 18, 2019 at 05:32:44PM +0800, Jianxin Pan wrote:
> Add the bindings for the Amlogic Secure power domains, controlling the
> secure power domains.
> 
> The bindings targets the Amlogic A1 and C1 compatible SoCs, in which the
> power domain registers are in secure world.
> 
> Signed-off-by: Jianxin Pan <jianxin.pan@...ogic.com>
> ---
>  .../bindings/power/amlogic,meson-sec-pwrc.yaml     | 42 ++++++++++++++++++++++
>  include/dt-bindings/power/meson-a1-power.h         | 32 +++++++++++++++++
>  2 files changed, 74 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/power/amlogic,meson-sec-pwrc.yaml
>  create mode 100644 include/dt-bindings/power/meson-a1-power.h
> 
> diff --git a/Documentation/devicetree/bindings/power/amlogic,meson-sec-pwrc.yaml b/Documentation/devicetree/bindings/power/amlogic,meson-sec-pwrc.yaml
> new file mode 100644
> index 00000000..88d8261
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/amlogic,meson-sec-pwrc.yaml
> @@ -0,0 +1,42 @@
> +# SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +# Copyright (c) 2019 Amlogic, Inc
> +# Author: Jianxin Pan <jianxin.pan@...ogic.com>
> +%YAML 1.2
> +---
> +$id: "http://devicetree.org/schemas/power/amlogic,meson-sec-pwrc.yaml#"
> +$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +
> +title: Amlogic Meson Secure Power Domains
> +
> +maintainers:
> +  - Jianxin Pan <jianxin.pan@...ogic.com>
> +
> +description: |+
> +  Meson Secure Power Domains used in A1/C1 SoCs.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - amlogic,meson-a1-pwrc
> +
> +  "#power-domain-cells":
> +    const: 1
> +
> +  secure-monitor:
> +    description: phandle to the secure-monitor node
> +    $ref: /schemas/types.yaml#/definitions/phandle

Like the watchdog, make this a child or the secure firmware node. Or 
just add '#power-domain-cells' to it. You don't really need a child node 
here if there's not other resources in DT for this.

Rob