On Fri, Mar 14, 2025 at 04:12:54PM +0800, Nick Hu wrote:
> Add compatible string and property for the SiFive CLINT v2.
Conor asked about being backwards compatible with v1. Please say why it
isn't here.
>
> Signed-off-by: Nick Hu <nick.hu@xxxxxxxxxx>
> Reviewed-by: Samuel Holland <samuel.holland@xxxxxxxxxx>
> ---
> - v2 changes:
> - Don't allow sifive,clint2 by itself. Add '-{}' to the first entry
> - Mark the sifive,fine-ctr-bits as the required property when
> the compatible includes the sifive,clint2
>
> .../bindings/timer/sifive,clint.yaml | 20 +++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> index 76d83aea4e2b..4b9dad11c1e9 100644
> --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> @@ -36,6 +36,10 @@ properties:
> - starfive,jh7110-clint # StarFive JH7110
> - starfive,jh8100-clint # StarFive JH8100
> - const: sifive,clint0 # SiFive CLINT v0 IP block
> + - items:
> + - {}
> + - const: sifive,clint2 # SiFive CLINT v2 IP block
> + description: SiFive CLINT v2 is the HRT that supports the Zicntr
> - items:
> - enum:
> - allwinner,sun20i-d1-clint
> @@ -62,6 +66,22 @@ properties:
> minItems: 1
> maxItems: 4095
>
> + sifive,fine-ctr-bits:
> + maximum: 15
> + description: The width in bits of the fine counter.
> +
> +if:
> + properties:
> + compatible:
> + contains:
> + const: sifive,clint2
> +then:
> + required:
> + - sifive,fine-ctr-bits
> +else:
> + properties:
> + sifive,fine-ctr-bits: false
> +
> additionalProperties: false
>
> required:
> --
> 2.17.1
>
