linux-kernel - Re: [PATCH 1/3] dt-bindings: arm,psci: Allow S2RAM power

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Message-Id: <173013537587.887084.8594386084996855802.robh@kernel.org>
Date: Mon, 28 Oct 2024 12:09:35 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Konrad Dybcio <konradybcio@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>, 
 Bjorn Andersson <bjorn.andersson@....qualcomm.com>, 
 Lorenzo Pieralisi <lpieralisi@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>, 
 Mark Rutland <mark.rutland@....com>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: arm,psci: Allow S2RAM power_state
 parameter description


On Mon, 28 Oct 2024 15:22:57 +0100, Konrad Dybcio wrote:
> From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> 
> Certain firmware implementations (such as the ones found on Qualcomm
> SoCs between roughly 2015 and 2023) expose an S3-like S2RAM state
> through the CPU_SUSPEND call, as opposed to exposing PSCIv1.0's
> optional PSCI_SYSTEM_SUSPEND.
> 
> This really doesn't work well with the model where we associate all
> calls to CPU_SUSPEND with cpuidle. Allow specifying a single special
> CPU_SUSPEND suspend parameter value that is to be treated just like
> SYSTEM_SUSPEND from the OS's point of view.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
> ---
>  Documentation/devicetree/bindings/arm/psci.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/arm/psci.yaml: properties:arm,psci-s2ram-param:maxItems: False schema does not allow 1
	hint: Scalar properties should not have array keywords
	from schema $id: http://devicetree.org/meta-schemas/keywords.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20241028-topic-cpu_suspend_s2ram-v1-1-9fdd9a04b75c@oss.qualcomm.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.