linux-kernel - Re: [PATCH v8 09/10] dt-bindings: interconnect: Add interconnect-tags bindings

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Date:   Tue, 19 May 2020 12:58:36 -0600
From:   Rob Herring <robh@...nel.org>
To:     Georgi Djakov <georgi.djakov@...aro.org>
Cc:     vireshk@...nel.org, nm@...com, sboyd@...nel.org, rjw@...ysocki.net,
        saravanak@...gle.com, sibis@...eaurora.org, mka@...omium.org,
        rnayak@...eaurora.org, bjorn.andersson@...aro.org,
        vincent.guittot@...aro.org, jcrouse@...eaurora.org,
        evgreen@...omium.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 09/10] dt-bindings: interconnect: Add
 interconnect-tags bindings

On Tue, May 12, 2020 at 03:53:26PM +0300, Georgi Djakov wrote:
> From: Sibi Sankar <sibis@...eaurora.org>
> 
> Add interconnect-tags bindings to enable passing of optional
> tag information to the interconnect framework.
> 
> Signed-off-by: Sibi Sankar <sibis@...eaurora.org>
> Signed-off-by: Georgi Djakov <georgi.djakov@...aro.org>
> ---
> v8:
> * New patch, picked from here:
>   https://lore.kernel.org/r/20200504202243.5476-10-sibis@codeaurora.org
> 
>  .../devicetree/bindings/interconnect/interconnect.txt        | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/interconnect/interconnect.txt b/Documentation/devicetree/bindings/interconnect/interconnect.txt
> index 6f5d23a605b7..c1a226a934e5 100644
> --- a/Documentation/devicetree/bindings/interconnect/interconnect.txt
> +++ b/Documentation/devicetree/bindings/interconnect/interconnect.txt
> @@ -55,6 +55,11 @@ interconnect-names : List of interconnect path name strings sorted in the same
>  			 * dma-mem: Path from the device to the main memory of
>  			            the system
>  
> +interconnect-tags : List of interconnect path tags sorted in the same order as the
> +		    interconnects property. Consumers can append a specific tag to
> +		    the path and pass this information to the interconnect framework
> +		    to do aggregation based on the attached tag.

Why isn't this information in the 'interconnect' arg cells?

We have 'interconnect-names' because strings don't mix with cells. An 
expanding list of 'interconnect-.*' is not a good pattern IMO.

Rob