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Date:   Wed, 14 Sep 2022 09:55:06 -0500
From:   Rob Herring <robh@kernel.org>
To:     Doug Berger <opendmb@gmail.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Jonathan Corbet <corbet@lwn.net>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Frank Rowand <frowand.list@gmail.com>,
        Mike Kravetz <mike.kravetz@oracle.com>,
        Muchun Song <songmuchun@bytedance.com>,
        Mike Rapoport <rppt@kernel.org>,
        Christoph Hellwig <hch@lst.de>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Robin Murphy <robin.murphy@arm.com>,
        Borislav Petkov <bp@suse.de>,
        "Paul E. McKenney" <paulmck@kernel.org>,
        Neeraj Upadhyay <quic_neeraju@quicinc.com>,
        Randy Dunlap <rdunlap@infradead.org>,
        Damien Le Moal <damien.lemoal@opensource.wdc.com>,
        Florian Fainelli <f.fainelli@gmail.com>,
        David Hildenbrand <david@redhat.com>, Zi Yan <ziy@nvidia.com>,
        Oscar Salvador <osalvador@suse.de>,
        Hari Bathini <hbathini@linux.ibm.com>,
        Kees Cook <keescook@chromium.org>,
        - <devicetree-spec@vger.kernel.org>,
        KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
        Mel Gorman <mgorman@suse.de>, linux-doc@vger.kernel.org,
        linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
        linux-mm@kvack.org, iommu@lists.linux.dev
Subject: Re: [PATCH 16/21] dt-bindings: reserved-memory: introduce
 designated-movable-block
Message-ID: <20220914145506.GA2149379-robh@kernel.org>
References: <20220913195508.3511038-1-opendmb@gmail.com>
 <20220913195508.3511038-17-opendmb@gmail.com>
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On Tue, Sep 13, 2022 at 12:55:03PM -0700, Doug Berger wrote:
> Introduce designated-movable-block.yaml to document the
> devicetree binding for Designated Movable Block children of the
> reserved-memory node.

What is a Designated Movable Block? This patch needs to stand on its 
own.

Why does this belong or need to be in DT?

> 
> Signed-off-by: Doug Berger <opendmb@gmail.com>
> ---
>  .../designated-movable-block.yaml             | 51 +++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/reserved-memory/designated-movable-block.yaml
> 
> diff --git a/Documentation/devicetree/bindings/reserved-memory/designated-movable-block.yaml b/Documentation/devicetree/bindings/reserved-memory/designated-movable-block.yaml
> new file mode 100644
> index 000000000000..42f846069a2e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reserved-memory/designated-movable-block.yaml
> @@ -0,0 +1,51 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/reserved-memory/designated-movable-block.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: /reserved-memory Designated Movable Block node binding
> +
> +maintainers:
> +  - devicetree-spec@vger.kernel.org
> +
> +allOf:
> +  - $ref: "reserved-memory.yaml"
> +
> +properties:
> +  compatible:
> +    const: designated-movable-block
> +    description:
> +      This indicates a region of memory meant to be placed into
> +      ZONE_MOVABLE.

Don't put Linuxisms into bindings.

> +
> +unevaluatedProperties: false
> +
> +required:
> +  - compatible
> +  - reusable
> +
> +examples:
> +  - |
> +      reserved-memory {
> +          #address-cells = <0x2>;
> +          #size-cells = <0x2>;
> +
> +          DMB0@10800000 {
> +               compatible = "designated-movable-block";
> +               reusable;
> +               reg = <0x0 0x10800000 0x0 0x2d800000>;
> +          };
> +
> +          DMB1@40000000 {
> +               compatible = "designated-movable-block";
> +               reusable;
> +               reg = <0x0 0x40000000 0x0 0x30000000>;
> +          };
> +
> +          DMB2@80000000 {
> +               compatible = "designated-movable-block";
> +               reusable;
> +               reg = <0x0 0x80000000 0x0 0x2fc00000>;
> +          };
> +      };
> -- 
> 2.25.1
> 
>