Re: [PATCH v3 1/5] dt-bindings: interrupt-controller: Add Renesas RZ/G2L Interrupt Controller

Geert Uytterhoeven
2022-05-12T06:43:30Z

Hi Prabhakar,

On Wed, May 11, 2022 at 8:32 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
> Add DT bindings for the Renesas RZ/G2L Interrupt Controller.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Thanks for the update!

> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/renesas,rzg2l-irqc.yaml
> @@ -0,0 +1,134 @@
> +# 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 (and alike SoC's) Interrupt Controller (IA55)
> +
> +maintainers:
> + - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
> + - Geert Uytterhoeven <geert+renesas@glider.be>
> +
> +description: |
> + IA55 performs various interrupt controls including synchronization for the external
> + interrupts of NMI, IRQ, and GPIOINT and the interrupts of the built-in peripheral
> + interrupts output by each IP. And it notifies the interrupt to the GIC
> + - 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':
> + description: The first cell should contain interrupt number and the second cell
> + is used to specify the flag.

The important part is still missing: which interrupt number (the general
description mentions 3 types)?
I believe the answer is "external interrupt number".

> + const: 2
> +
> +

Double blank line.

> + '#address-cells':
> + const: 0

Gr{oetje,eeting}s,

Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

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