linux-kernel - Re: [PATCH v6 13/52] dt-bindings: memory: tegra124: emc: Document new interconnect property

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Date:   Tue, 27 Oct 2020 11:25:06 +0100
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Viresh Kumar <vireshk@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH v6 13/52] dt-bindings: memory: tegra124: emc: Document
 new interconnect property

On Mon, Oct 26, 2020 at 01:16:56AM +0300, Dmitry Osipenko wrote:
> External memory controller is interconnected with memory controller and
> with external memory. Document new interconnect property which turns
> External Memory Controller into interconnect provider.
> 
> Signed-off-by: Dmitry Osipenko <digetx@...il.com>
> ---
>  .../bindings/memory-controllers/nvidia,tegra124-emc.yaml   | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
> index 278549f9e051..ac00832ceac1 100644
> --- a/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
> +++ b/Documentation/devicetree/bindings/memory-controllers/nvidia,tegra124-emc.yaml
> @@ -29,6 +29,9 @@ properties:
>      items:
>        - const: emc
>  
> +  "#interconnect-cells":
> +    const: 0
> +
>    nvidia,memory-controller:
>      $ref: /schemas/types.yaml#/definitions/phandle
>      description:
> @@ -327,6 +330,7 @@ required:
>    - clocks
>    - clock-names
>    - nvidia,memory-controller
> +  - "#interconnect-cells"

Another required property, what about all existing users of this binding?

>  
>  additionalProperties: false
>  
> @@ -345,6 +349,7 @@ examples:
>  
>          #iommu-cells = <1>;
>          #reset-cells = <1>;
> +        #interconnect-cells = <1>;

You meant '0'?

Best regards,
Krzysztof