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 <[email protected]>
> ---
> .../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 <[email protected]>
> +
> +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
>
>