[PATCH 1/3] dt-bindings: timer: sifive,clint: add legacy riscv compatible

[Rob Herring]

On Fri, Aug 05, 2022 at 05:28:43PM +0100, Conor Dooley wrote:
> From: Conor Dooley <conor.dooley at microchip.com>
> 
> While "real" hardware might not use the compatible string "riscv,clint0"
> it is present in the driver & QEMU uses it for automatically generated
> virt machine dtbs. To avoid dt-validate problems with QEMU produced
> dtbs, such as the following, add it to the binding.
> 
> riscv-virt.dtb: clint at 2000000: compatible:0: 'sifive,clint0' is not one of ['sifive,fu540-c000-clint', 'starfive,jh7100-clint', 'canaan,k210-clint']
> 
> Reported-by: Rob Herring <robh at kernel.org>
> Link: https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
> Signed-off-by: Conor Dooley <conor.dooley at microchip.com>
> ---
>  .../bindings/timer/sifive,clint.yaml           | 18 ++++++++++++------
>  1 file changed, 12 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/timer/sifive,clint.yaml b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> index e64f46339079..9fcf20942582 100644
> --- a/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> +++ b/Documentation/devicetree/bindings/timer/sifive,clint.yaml
> @@ -22,12 +22,18 @@ description:
>  
>  properties:
>    compatible:
> -    items:
> -      - enum:
> -          - sifive,fu540-c000-clint
> -          - starfive,jh7100-clint
> -          - canaan,k210-clint
> -      - const: sifive,clint0
> +    oneOf:
> +      - items:
> +          - enum:
> +              - sifive,fu540-c000-clint
> +              - starfive,jh7100-clint
> +              - canaan,k210-clint
> +          - const: sifive,clint0
> +      - items:
> +          - const: sifive,clint0
> +          - const: riscv,clint0
> +        deprecated: true
> +        description: For legacy systems & the qemu virt machine only

I would drop 'legacy systems'.

>  
>      description:
>        Should be "<vendor>,<chip>-clint" and "sifive,clint<version>".
> -- 
> 2.37.1
> 
>