linux-kernel - Re: [PATCH 1/2] dt-bindings: timer: Add ARM SSE(Subsystems for Embedded) timer

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Message-Id: <175581575625.1136124.14166801245928231276.robh@kernel.org>
Date: Thu, 21 Aug 2025 17:39:48 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Jisheng Zhang <jszhang@...nel.org>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>, 
 linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>, 
 devicetree@...r.kernel.org, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: timer: Add ARM SSE(Subsystems for
 Embedded) timer


On Thu, 21 Aug 2025 23:24:28 +0800, Jisheng Zhang wrote:
> Add binding doc for the ARM SSE(Subsystems for Embedded) timer. Here
> is the document URL:
> https://developer.arm.com/documentation/107610/0000/System-timer-components?lang=en
> 
> Although the IP is mostly seen on MCU SoC platforms, but nothing
> prevent it from being integrated into linux capable SoC platforms.
> 
> The IP core may have a system counter to generate timestamp value,
> a system timer to raise an interrupt when a period has elapsed, and
> a System Watchdog to detect errant system behaviour then reset the
> system if a period elapses without ping.
> 
> Signed-off-by: Jisheng Zhang <jszhang@...nel.org>
> ---
>  .../bindings/timer/arm,sse_timer.yaml         | 90 +++++++++++++++++++
>  1 file changed, 90 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/arm,sse_timer.yaml
> 

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

yamllint warnings/errors:
./Documentation/devicetree/bindings/timer/arm,sse_timer.yaml:43:111: [warning] line too long (145 > 110 characters) (line-length)

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/timer/arm,sse_timer.yaml: patternProperties:^frame@[0-9a-f]+$:properties:interrupts: 'oneOf' conditional failed, one must be fixed:
	[{'description': 'timer irq'}] is too short
	False schema does not allow 1
	hint: "minItems" is only needed if less than the "items" list length
	from schema $id: http://devicetree.org/meta-schemas/items.yaml#

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250821152429.26995-2-jszhang@kernel.org

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.