linux-kernel - Re: [PATCH v2 01/12] dt-bindings: soc: qcom,rpmh-rsc: Limit power-domains requirement

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Message-ID: <20250327-noisy-dogfish-of-advertising-69bb05@krzk-bin>
Date: Thu, 27 Mar 2025 09:18:23 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Konrad Dybcio <konradybcio@...nel.org>
Cc: Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	cros-qcom-dts-watchers@...omium.org, Marc Gonzalez <mgonzalez@...ebox.fr>, 
	Dmitry Baryshkov <lumag@...nel.org>, Arnaud Vrac <avrac@...ebox.fr>, 
	Sayali Lokhande <quic_sayalil@...cinc.com>, Xin Liu <quic_liuxin@...cinc.com>, 
	Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>, Marijn Suijten <marijn.suijten@...ainline.org>, 
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: Re: [PATCH v2 01/12] dt-bindings: soc: qcom,rpmh-rsc: Limit
 power-domains requirement

On Thu, Mar 27, 2025 at 02:47:03AM +0100, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> Certain platforms (such as Chrome SDM845 and SC7180 with a TF-A running
> as secure firmware) do not have a OSI-mode capable PSCI implementation.
> 
> That in turn means the PSCI-associated power domain which represents the
> system's power state can't provide enough feedback to the RSC device.
> 
> Don't require power-domains on platforms where this may be the case.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> ---
>  .../bindings/soc/qcom/qcom,rpmh-rsc.yaml           | 24 ++++++++++++++++++++--
>  1 file changed, 22 insertions(+), 2 deletions(-)

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

Best regards,
Krzysztof