linux-kernel - Re: [PATCH 2/4] dt-bindings: interconnect: Remove bogus interconnect nodes

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Date: Tue, 2 Jan 2024 22:00:57 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>,
 Bjorn Andersson <andersson@...nel.org>, Georgi Djakov <djakov@...nel.org>,
 Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Rajendra Nayak
 <quic_rjendra@...cinc.com>, Sibi Sankar <quic_sibis@...cinc.com>,
 Abel Vesa <abel.vesa@...aro.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
 linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/4] dt-bindings: interconnect: Remove bogus interconnect
 nodes

On 02/01/2024 19:29, Konrad Dybcio wrote:
> The downstream kernel has infrastructure for passing votes from different
> interconnect nodes onto different RPMh RSCs. This neither implemented, not
> is going to be implemented upstream (in favor of a different solution
> using ICC tags through the same node).
> 
> Unfortunately, as it happens, meaningless (in the upstream context) parts
> of the vendor driver were copied, ending up causing havoc - since all
> "per-RSC" (in quotes because they all point to the main APPS one) BCMs
> defined within the driver overwrite the value in RPMh on every
> aggregation.
> 
> To both avoid keeping bogus code around and possibly introducing
> impossible-to-track-down bugs (busses shutting down for no reason), get
> rid of the duplicated ICC node definitions.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>

Best regards,
Krzysztof