On 5/5/25 07:48, Rob Herring (Arm) wrote:
> Convert the ARC-HS Interrupt Distribution Unit interrupt controller
> binding to schema format. It's a straight-forward conversion of the
> typical interrupt controller.
>
> Signed-off-by: Rob Herring (Arm) <r...@kernel.org>
Acked-by: Vineet Gupta <vgu...@kernel.org>
Thx,
-Vineet
> ---
> .../snps,archs-idu-intc.txt | 46 ------------------
> .../snps,archs-idu-intc.yaml | 48 +++++++++++++++++++
> 2 files changed, 48 insertions(+), 46 deletions(-)
> delete mode 100644
> Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt
> create mode 100644
> Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.yaml
>
> diff --git
> a/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt
>
> b/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt
> deleted file mode 100644
> index a5c1db95b3ec..000000000000
> ---
> a/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.txt
> +++ /dev/null
> @@ -1,46 +0,0 @@
> -* ARC-HS Interrupt Distribution Unit
> -
> - This optional 2nd level interrupt controller can be used in SMP
> configurations
> - for dynamic IRQ routing, load balancing of common/external IRQs towards
> core
> - intc.
> -
> -Properties:
> -
> -- compatible: "snps,archs-idu-intc"
> -- interrupt-controller: This is an interrupt controller.
> -- #interrupt-cells: Must be <1> or <2>.
> -
> - Value of the first cell specifies the "common" IRQ from peripheral to IDU.
> - Number N of the particular interrupt line of IDU corresponds to the line
> N+24
> - of the core interrupt controller.
> -
> - The (optional) second cell specifies any of the following flags:
> - - bits[3:0] trigger type and level flags
> - 1 = low-to-high edge triggered
> - 2 = NOT SUPPORTED (high-to-low edge triggered)
> - 4 = active high level-sensitive <<< DEFAULT
> - 8 = NOT SUPPORTED (active low level-sensitive)
> - When no second cell is specified, the interrupt is assumed to be level
> - sensitive.
> -
> - The interrupt controller is accessed via the special ARC AUX register
> - interface, hence "reg" property is not specified.
> -
> -Example:
> - core_intc: core-interrupt-controller {
> - compatible = "snps,archs-intc";
> - interrupt-controller;
> - #interrupt-cells = <1>;
> - };
> -
> - idu_intc: idu-interrupt-controller {
> - compatible = "snps,archs-idu-intc";
> - interrupt-controller;
> - interrupt-parent = <&core_intc>;
> - #interrupt-cells = <1>;
> - };
> -
> - some_device: serial@c0fc1000 {
> - interrupt-parent = <&idu_intc>;
> - interrupts = <0>; /* upstream idu IRQ #24 */
> - };
> diff --git
> a/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.yaml
>
> b/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.yaml
> new file mode 100644
> index 000000000000..286a964f23e1
> --- /dev/null
> +++
> b/Documentation/devicetree/bindings/interrupt-controller/snps,archs-idu-intc.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/snps,archs-idu-intc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: ARC-HS Interrupt Distribution Unit
> +
> +maintainers:
> + - Vineet Gupta <vgu...@kernel.org>
> +
> +description: >
> + ARC-HS Interrupt Distribution Unit is an optional 2nd level interrupt
> + controller which can be used in SMP configurations for dynamic IRQ routing,
> + load balancing of common/external IRQs towards core intc.
> +
> + The interrupt controller is accessed via the special ARC AUX register
> + interface, hence "reg" property is not specified.
> +
> +properties:
> + compatible:
> + const: snps,archs-idu-intc
> +
> + interrupt-controller: true
> +
> + '#interrupt-cells':
> + description: |
> + Number of interrupt specifier cells:
> + - 1: only a common IRQ is specified.
> + - 2: a second cell encodes trigger type and level flags:
> + 1 = low-to-high edge triggered
> + 4 = active high level-sensitive (default)
> + enum: [1, 2]
> +
> +required:
> + - compatible
> + - interrupt-controller
> + - '#interrupt-cells'
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + interrupt-controller {
> + compatible = "snps,archs-idu-intc";
> + interrupt-controller;
> + #interrupt-cells = <1>;
> + };
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