linux-kernel - Re: [PATCH V5 1/4] dt-bindings: interconnect: Add EPSS L3 compatible for SA8775P

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Message-ID: <bda810ab-68d8-4265-87c3-a6d021092e62@kernel.org>
Date: Thu, 21 Nov 2024 12:53:58 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Raviteja Laggyshetty <quic_rlaggysh@...cinc.com>,
 Georgi Djakov <djakov@...nel.org>, Rob Herring <robh@...nel.org>,
 Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Bjorn Andersson <andersson@...nel.org>,
 Konrad Dybcio <konradybcio@...nel.org>
Cc: Odelu Kukatla <quic_okukatla@...cinc.com>,
 Mike Tipton <quic_mdtipton@...cinc.com>, Sibi Sankar
 <quic_sibis@...cinc.com>, linux-arm-msm@...r.kernel.org,
 linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH V5 1/4] dt-bindings: interconnect: Add EPSS L3 compatible
 for SA8775P

On 21/11/2024 12:30, Raviteja Laggyshetty wrote:
> Add Epoch Subsystem (EPSS) L3 interconnect provider binding on
> SA8775P SoCs.

This we see from the diff. Explain the hardware, why adding epps-l3-perf.

> 
> Signed-off-by: Raviteja Laggyshetty <quic_rlaggysh@...cinc.com>
> ---
>  .../devicetree/bindings/interconnect/qcom,osm-l3.yaml         | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> index 21dae0b92819..042ca44c32ec 100644
> --- a/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> +++ b/Documentation/devicetree/bindings/interconnect/qcom,osm-l3.yaml
> @@ -34,6 +34,10 @@ properties:
>                - qcom,sm8250-epss-l3
>                - qcom,sm8350-epss-l3
>            - const: qcom,epss-l3
> +      - items:
> +          - enum:
> +              - qcom,sa8775p-epss-l3
> +          - const: qcom,epss-l3-perf

I don't understand this change in context of driver. These are the same.
Isn't this compatible with sm8250?

Sorry, this is all (binding plus driver) quite confusing.

Best regards,
Krzysztof