linux-kernel - Re: [PATCH v2 1/3] dt-bindings: interrupt-controller: renesas,rzg2l-irqc: Update interrupts

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Date: Mon, 12 Feb 2024 17:24:45 +0100
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Thomas Gleixner <tglx@...utronix.de>, Rob Herring <robh+dt@...nel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, 
	Magnus Damm <magnus.damm@...il.com>, devicetree@...r.kernel.org, 
	linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Biju Das <biju.das.jz@...renesas.com>, 
	Claudiu Beznea <claudiu.beznea.uj@...renesas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2 1/3] dt-bindings: interrupt-controller:
 renesas,rzg2l-irqc: Update interrupts

Hi Prabhakar,

On Mon, Feb 5, 2024 at 3:44 PM Prabhakar <prabhakar.csengg@...il.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> All the RZ/G2L and alike SoC's (listed below) have ECCRAM0/1 interrupts
> supported by the IRQC block, reflect the same in DT binding doc.
>
> - R9A07G043U              - RZ/G2UL
> - R9A07G044L/R9A07G044LC  - RZ/{G2L,G2LC}
> - R9A07G054               - RZ/V2L
> - R9A08G045               - RZ/G3S
>
> For the RZ/G3S SoC ("R9A08G045") ECCRAM0/1 interrupts combined into single
> interrupt so we just use the below to represent them:
> - ec7tie1-0
> - ec7tie2-0
> - ec7tiovf-0
>
> Previously, it was assumed that BUS-error and ECCRAM0/1 error interrupts
> were only supported by RZ/G2UL ("R9A07G043U") and RZ/G3S ("R9A08G045")
> SoCs. However, in reality, all RZ/G2L and similar SoCs (listed above)
> support these interrupts. Therefore, mark the 'interrupt-names' property
> as required for all the SoCs and update the example node in the binding
> document.
>
> Fixes: 96fed779d3d4 ("dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller")
> Fixes: 1cf0697a24ef ("dt-bindings: interrupt-controller: renesas,rzg2l-irqc: Document RZ/G3S")
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Thanks for your patch!

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>

> --- a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> @@ -88,9 +88,15 @@ properties:
>        - description: GPIO interrupt, TINT30
>        - description: GPIO interrupt, TINT31
>        - description: Bus error interrupt
> +      - description: ECCRAM0 1bit error interrupt
> +      - description: ECCRAM0 2bit error interrupt
> +      - description: ECCRAM0 error overflow interrupt
> +      - description: ECCRAM1 1bit error interrupt
> +      - description: ECCRAM1 2bit error interrupt
> +      - description: ECCRAM1 error overflow interrupt
>
>    interrupt-names:
> -    minItems: 41
> +    minItems: 45
>      items:
>        - const: nmi
>        - const: irq0
> @@ -134,6 +140,12 @@ properties:
>        - const: tint30
>        - const: tint31
>        - const: bus-err
> +      - const: ec7tie1-0   # For RZ/G3S SoC ("R9A08G045") ECCRAM0/1 interrupts are combined into single interrupt.
> +      - const: ec7tie2-0   # For RZ/G3S SoC ("R9A08G045") ECCRAM0/1 interrupts are combined into single interrupt.
> +      - const: ec7tiovf-0  # For RZ/G3S SoC ("R9A08G045") ECCRAM0/1 interrupts are combined into single interrupt.

These lines are indeed a bit long, and might become longer when newer
SoCs are introduced.

What about changing the descriptions instead, like

    -      - description: ECCRAM0 1bit error interrupt
    +      - description: ECCRAM0 or combined ECCRAM0/1 1bit error interrupt

?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68korg

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds