linux-kernel - Re: [PATCH v2] dt-bindings: timer: renesas,tmu: Document input capture interrupt

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Message-ID: <20240131180013.GE2544372@ragnatech.se>
Date: Wed, 31 Jan 2024 19:00:13 +0100
From: Niklas Söderlund <niklas.soderlund@...natech.se>
To: Geert Uytterhoeven <geert+renesas@...der.be>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Laurent Pinchart <laurent.pinchart+renesas@...asonboard.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Yoshinori Sato <ysato@...rs.sourceforge.jp>,
	devicetree@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
	linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] dt-bindings: timer: renesas,tmu: Document input
 capture interrupt

Hi Geert,

Thanks for your work.

On 2024-01-31 17:11:45 +0100, Geert Uytterhoeven wrote:
> Some Timer Unit (TMU) instances with 3 channels support a fourth
> interrupt: an input capture interrupt for the third channel.
> 
> While at it, document the meaning of the four interrupts, and add
> "interrupt-names" for clarity.
> 
> Update the example to match reality.
> 
> Inspired by a patch by Yoshinori Sato for SH.
> 
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>

Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@...natech.se>

> ---
> v2:
>   - Reword interrupt descriptions.
> 
> The corresponding DTS updates can be found in series "[PATCH 0/2]
> ARM/arm64: dts: renesas: Improve TMU interrupt descriptions".
> https://lore.kernel.org/r/cover.1705325654.git.geert+renesas@glider.be
> Once the DTS updates are upstream, "interrupt-names" can be made
> required.
> ---
>  .../devicetree/bindings/timer/renesas,tmu.yaml | 18 ++++++++++++++++--
>  1 file changed, 16 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> index a67e427a9e7e22aa..84bbe15028a1de94 100644
> --- a/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> +++ b/Documentation/devicetree/bindings/timer/renesas,tmu.yaml
> @@ -46,7 +46,19 @@ properties:
>  
>    interrupts:
>      minItems: 2
> -    maxItems: 3
> +    items:
> +      - description: Underflow interrupt, channel 0
> +      - description: Underflow interrupt, channel 1
> +      - description: Underflow interrupt, channel 2
> +      - description: Input capture interrupt, channel 2
> +
> +  interrupt-names:
> +    minItems: 2
> +    items:
> +      - const: tuni0
> +      - const: tuni1
> +      - const: tuni2
> +      - const: ticpi2
>  
>    clocks:
>      maxItems: 1
> @@ -100,7 +112,9 @@ examples:
>              reg = <0xffd80000 0x30>;
>              interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>,
>                           <GIC_SPI 33 IRQ_TYPE_LEVEL_HIGH>,
> -                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
> +                         <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>,
> +                         <GIC_SPI 35 IRQ_TYPE_LEVEL_HIGH>;
> +            interrupt-names = "tuni0", "tuni1", "tuni2", "ticpi2";
>              clocks = <&mstp0_clks R8A7779_CLK_TMU0>;
>              clock-names = "fck";
>              power-domains = <&sysc R8A7779_PD_ALWAYS_ON>;
> -- 
> 2.34.1
> 
> 

-- 
Kind Regards,
Niklas Söderlund