Date:   Fri, 19 Nov 2021 10:52:04 -0600
From:   Rob Herring <robh@kernel.org>
To:     Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Cc:     Marc Zyngier <maz@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Linus Walleij <linus.walleij@linaro.org>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Magnus Damm <magnus.damm@gmail.com>,
        Bartosz Golaszewski <bgolaszewski@baylibre.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        devicetree@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
        linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org,
        Prabhakar <prabhakar.csengg@gmail.com>,
        Biju Das <biju.das.jz@bp.renesas.com>
Subject: Re: [RFC PATCH v3 1/7] dt-bindings: interrupt-controller: Add
 Renesas RZ/G2L Interrupt Controller
Message-ID: <YZfWNNkO1Kcghona@robh.at.kernel.org>
References: <20211110225808.16388-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
 <20211110225808.16388-2-prabhakar.mahadev-lad.rj@bp.renesas.com>
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On Wed, Nov 10, 2021 at 10:58:02PM +0000, Lad Prabhakar wrote:
> Add DT bindings for the Renesas RZ/G2L Interrupt Controller.
> 
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> ---
>  .../renesas,rzg2l-irqc.yaml                   | 137 ++++++++++++++++++
>  1 file changed, 137 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> new file mode 100644
> index 000000000000..ebe318fe336b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> @@ -0,0 +1,137 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/renesas,rzg2l-irqc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas RZ/G2L Interrupt Controller
> +
> +maintainers:
> +  - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> +  - Geert Uytterhoeven <geert+renesas@glider.be>
> +
> +description: |
> +  The RZ/G2L Interrupt Controller is a front-end for the GIC found on Renesas RZ/G2L SoC's
> +    - IRQ sense select for 8 external interrupts, mapped to 8 GIC SPI interrupts
> +    - GPIO pins used as external interrupt input pins, mapped to 32 GIC SPI interrupts
> +    - NMI edge select (NMI is not treated as NMI exception and supports fall edge and
> +      stand-up edge detection interrupts)
> +
> +allOf:
> +  - $ref: /schemas/interrupt-controller.yaml#
> +
> +properties:
> +  compatible:
> +    items:
> +      - enum:
> +          - renesas,r9a07g044-irqc # RZ/G2L
> +      - const: renesas,rzg2l-irqc
> +
> +  '#interrupt-cells':
> +    const: 2
> +
> +  '#address-cells':
> +    const: 0
> +
> +  interrupt-controller: true
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupt-map:
> +    maxItems: 41
> +    description: Specifies the mapping from external interrupts to GIC interrupts.
> +
> +  interrupt-map-mask:
> +    items:
> +      - const: 40
> +      - const: 0

Are you sure this is what you want? I'd expect <0xff 0x0> here.

Otherwise, it's kind of pointless to list out 41 interrupt-map entries.

> +
> +  clocks:
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: clk
> +      - const: pclk
> +
> +  power-domains:
> +    maxItems: 1
> +
> +  resets:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - '#interrupt-cells'
> +  - '#address-cells'
> +  - interrupt-controller
> +  - reg
> +  - interrupt-map
> +  - interrupt-map-mask
> +  - clocks
> +  - clock-names
> +  - power-domains
> +  - resets
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    #include <dt-bindings/clock/r9a07g044-cpg.h>
> +
> +    irqc: interrupt-controller@110a0000 {
> +            compatible = "renesas,r9a07g044-irqc", "renesas,rzg2l-irqc";
> +            #interrupt-cells = <2>;
> +            #address-cells = <0>;
> +            interrupt-controller;
> +            reg = <0x110a0000 0x10000>;
> +            interrupt-map = <0 0 &gic GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
> +                            <1 0 &gic GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
> +                            <2 0 &gic GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
> +                            <3 0 &gic GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
> +                            <4 0 &gic GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
> +                            <5 0 &gic GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
> +                            <6 0 &gic GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> +                            <7 0 &gic GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
> +                            <8 0 &gic GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +                            <9 0 &gic GIC_SPI 444 IRQ_TYPE_LEVEL_HIGH>,
> +                            <10 0 &gic GIC_SPI 445 IRQ_TYPE_LEVEL_HIGH>,
> +                            <11 0 &gic GIC_SPI 446 IRQ_TYPE_LEVEL_HIGH>,
> +                            <12 0 &gic GIC_SPI 447 IRQ_TYPE_LEVEL_HIGH>,
> +                            <13 0 &gic GIC_SPI 448 IRQ_TYPE_LEVEL_HIGH>,
> +                            <14 0 &gic GIC_SPI 449 IRQ_TYPE_LEVEL_HIGH>,
> +                            <15 0 &gic GIC_SPI 450 IRQ_TYPE_LEVEL_HIGH>,
> +                            <16 0 &gic GIC_SPI 451 IRQ_TYPE_LEVEL_HIGH>,
> +                            <17 0 &gic GIC_SPI 452 IRQ_TYPE_LEVEL_HIGH>,
> +                            <18 0 &gic GIC_SPI 453 IRQ_TYPE_LEVEL_HIGH>,
> +                            <19 0 &gic GIC_SPI 454 IRQ_TYPE_LEVEL_HIGH>,
> +                            <20 0 &gic GIC_SPI 455 IRQ_TYPE_LEVEL_HIGH>,
> +                            <21 0 &gic GIC_SPI 456 IRQ_TYPE_LEVEL_HIGH>,
> +                            <22 0 &gic GIC_SPI 457 IRQ_TYPE_LEVEL_HIGH>,
> +                            <23 0 &gic GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH>,
> +                            <24 0 &gic GIC_SPI 459 IRQ_TYPE_LEVEL_HIGH>,
> +                            <25 0 &gic GIC_SPI 460 IRQ_TYPE_LEVEL_HIGH>,
> +                            <26 0 &gic GIC_SPI 461 IRQ_TYPE_LEVEL_HIGH>,
> +                            <27 0 &gic GIC_SPI 462 IRQ_TYPE_LEVEL_HIGH>,
> +                            <28 0 &gic GIC_SPI 463 IRQ_TYPE_LEVEL_HIGH>,
> +                            <29 0 &gic GIC_SPI 464 IRQ_TYPE_LEVEL_HIGH>,
> +                            <30 0 &gic GIC_SPI 465 IRQ_TYPE_LEVEL_HIGH>,
> +                            <31 0 &gic GIC_SPI 466 IRQ_TYPE_LEVEL_HIGH>,
> +                            <32 0 &gic GIC_SPI 467 IRQ_TYPE_LEVEL_HIGH>,
> +                            <33 0 &gic GIC_SPI 468 IRQ_TYPE_LEVEL_HIGH>,
> +                            <34 0 &gic GIC_SPI 469 IRQ_TYPE_LEVEL_HIGH>,
> +                            <35 0 &gic GIC_SPI 470 IRQ_TYPE_LEVEL_HIGH>,
> +                            <36 0 &gic GIC_SPI 471 IRQ_TYPE_LEVEL_HIGH>,
> +                            <37 0 &gic GIC_SPI 472 IRQ_TYPE_LEVEL_HIGH>,
> +                            <38 0 &gic GIC_SPI 473 IRQ_TYPE_LEVEL_HIGH>,
> +                            <39 0 &gic GIC_SPI 474 IRQ_TYPE_LEVEL_HIGH>,
> +                            <40 0 &gic GIC_SPI 475 IRQ_TYPE_LEVEL_HIGH>;
> +                        interrupt-map-mask = <40 0>;
> +                        clocks = <&cpg CPG_MOD R9A07G044_IA55_CLK>,
> +                                 <&cpg CPG_MOD R9A07G044_IA55_PCLK>;
> +                        clock-names = "clk", "pclk";
> +                        power-domains = <&cpg>;
> +                        resets = <&cpg R9A07G044_IA55_RESETN>;
> +    };
> -- 
> 2.17.1
> 
>