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SubjectRe: [RFC PATCH 4/7] irqchip/apple-aic: Add support for Apple AIC
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On 20.01.21 14:27, Mohamed Mediouni wrote:
> From: Stan Skowronek <stan@corellium.com>
>
> Apple SoCs use the Apple AIC interrupt controller.
> The Arm architectural timers is wired over FIQ on that hardware.
>
> Signed-off-by: Stan Skowronek <stan@corellium.com>
> Signed-off-by: Mohamed Mediouni <mohamed.mediouni@caramail.com>
> ---
> .../interrupt-controller/apple,aic.yaml | 49 ++++
> MAINTAINERS | 6 +
> drivers/irqchip/Kconfig | 6 +
> drivers/irqchip/Makefile | 1 +
> drivers/irqchip/irq-apple-aic.c | 211 ++++++++++++++++++
> 5 files changed, 273 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
> create mode 100644 drivers/irqchip/irq-apple-aic.c
>
> diff --git a/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml b/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
> new file mode 100644
> index 000000000000..e615eaaca869
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/interrupt-controller/apple,aic.yaml
> @@ -0,0 +1,49 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/interrupt-controller/apple,aic.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Apple Advanced Interrupt Controller (AIC)
> +
> +description:
> + Interrupt controller present on Apple processors. AIC
> + is used by Apple on their AArch64 SoCs since the Apple A7.
> +
> +maintainers:
> + - Stan Skowronek <stan@corellium.com>
> +
> +properties:
> + compatible:
> + items:
> + - const: apple,aic
> +
> + reg:
> + maxItems: 1
> +
> + '#interrupt-cells':
> + const: 3
> +
> + interrupt-controller: true
> +
> + fast-ipi:
> + description:
> + Fast IPI support.
> +
> +required:
> + - compatible
> + - '#interrupt-cells'
> + - interrupt-controller
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + aic: interrupt-controller@23b100000 {
> + compatible = "apple,aic";
> + #interrupt-cells = <3>;
> + interrupt-controller;
> + reg = <0x2 0x3b100000 0x0 0x8000>;
> + fast-ipi;
> + };
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 00836f6452f0..e609ede99dd4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -1218,6 +1218,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/jj/linux-apparmor
> F: Documentation/admin-guide/LSM/apparmor.rst
> F: security/apparmor/
>
> +APPLE ADVANCED INTERRUPT CONTROLLER DRIVER
> +M: Stan Skowronek <stan@corellium.com>

Signing someone else up for maintainership is ... unusual :). Do you
have buy in from Stan that he'll be responsive and handle patch reviews?

> +L: linux-arm-kernel@lists.infradead.org
> +S: Maintained
> +F: drivers/irqchip/irq-apple-aic.c
> +


Alex



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