Re: [PATCH v4 3/6] dt-bindings: interrupt-controller: add LS7A PCH LPC

[Jiaxun Yang]

On Sat, 21 Mar 2026, at 9:20 AM, Icenowy Zheng wrote:
> Loongson 7A series PCH contains an LPC controller with an interrupt
> controller.
>
> Add the device tree binding for the interrupt controller.
>
> Signed-off-by: Icenowy Zheng <zhengxingda@xxxxxxxxxxx>

Reviewed-by: Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>

> ---
>  .../loongson,pch-lpc.yaml                     | 52 +++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 
> Documentation/devicetree/bindings/interrupt-controller/loongson,pch-lpc.yaml
>
> diff --git 
> a/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-lpc.yaml 
> b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-lpc.yaml
> new file mode 100644
> index 0000000000000..ff2a425b6f0b8
> --- /dev/null
> +++ 
> b/Documentation/devicetree/bindings/interrupt-controller/loongson,pch-lpc.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: 
> http://devicetree.org/schemas/interrupt-controller/loongson,pch-lpc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Loongson PCH LPC Controller
> +
> +maintainers:
> +  - Jiaxun Yang <jiaxun.yang@xxxxxxxxxxx>
> +
> +description:
> +  This interrupt controller is found in the Loongson LS7A family of 
> PCH for
> +  accepting interrupts sent by LPC-connected peripherals and 
> signalling PIC
> +  via a single interrupt line when interrupts are available.
> +
> +properties:
> +  compatible:
> +    const: loongson,ls7a-lpc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupt-controller: true
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  '#interrupt-cells':
> +    const: 2
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupt-controller
> +  - interrupts
> +  - '#interrupt-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    lpc: interrupt-controller@10002000 {
> +      compatible = "loongson,ls7a-lpc";
> +      reg = <0x10002000 0x400>;
> +      interrupt-controller;
> +      #interrupt-cells = <2>;
> +      interrupt-parent = <&pic>;
> +      interrupts = <19 IRQ_TYPE_LEVEL_HIGH>;
> +    };
> +...
> -- 
> 2.52.0

-- 
- Jiaxun