Re: [PATCH v2 1/3] dt-bindings: soc: nuvoton: Add NPCM BPC

[Conor Dooley <conor@kernel.org>]

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On Tue, Dec 12, 2023 at 12:07:01PM +0200, Tomer Maimon wrote:
> Added device tree binding documentation for Nuvoton BMC NPCM BIOS Post
> Code (BPC).
> 
> The NPCM BPC monitoring two configurable I/O addresses written by the
> host on the bus.
> 
> Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
> ---
>  .../soc/nuvoton/nuvoton,npcm-bpc.yaml         | 63 +++++++++++++++++++
>  1 file changed, 63 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml
> 
> diff --git a/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml
> new file mode 100644
> index 000000000000..30033cdac8f5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/nuvoton/nuvoton,npcm-bpc.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/soc/nuvoton/nuvoton,npcm-bpc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Nuvoton BMC NPCM BIOS Post Code (bpc) controller
> +
> +maintainers:
> +  - Tomer Maimon <tmaimon77@gmail.com>
> +
> +description:
> +  Nuvoton BMC NPCM BIOS Post Code (BPC) monitoring two configurable I/O
> +  addresses written by the host on the bus, the capture data stored in
> +  128-word FIFO.
> +
> +  NPCM BPC supports capture double words, when using capture
> +  double word only I/O address 1 is monitored.
> +
> +properties:
> +  compatible:
> +    enum:
> +      - nuvoton,npcm750-bpc
> +      - nuvoton,npcm845-bpc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  nuvoton,monitor-ports:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    description:
> +      Contain monitor I/O addresses on the bus, at least one monitor I/O
> +      address required.
> +
> +  nuvoton,bpc-en-dwcapture:
> +    description:
> +      If present, Enable FIFO capture of the DWord address according to
> +      one address setting.

This sounds like something you can either infer from the compatible or
is determining software policy. A more detailed
explanation/justification is required here.

Thanks,
Conor.

> +    type: boolean
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - nuvoton,monitor-ports
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/interrupt-controller/irq.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    bpc: bpc@f0007040 {
> +        compatible = "nuvoton,npcm750-bpc";
> +        reg = <0xf0007040 0x20>;
> +        interrupts = <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +        nuvoton,monitor-ports = <0x80>;
> +    };
> +...
> -- 
> 2.34.1
> 
> 

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