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    Subject[PATCH v4 2/4] dt-bindings: interrupt-controller: sifive,plic: add legacy riscv compatible
    Date
    From: Conor Dooley <conor.dooley@microchip.com>

    While "real" hardware might not use the compatible string "riscv,plic0"
    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: plic@c000000: compatible: 'oneOf' conditional failed, one must be fixed:
    'sifive,plic-1.0.0' is not one of ['sifive,fu540-c000-plic', 'starfive,jh7100-plic', 'canaan,k210-plic']
    'sifive,plic-1.0.0' is not one of ['allwinner,sun20i-d1-plic']
    'sifive,plic-1.0.0' was expected
    'thead,c900-plic' was expected
    riscv-virt.dtb: plic@c000000: '#address-cells' is a required property

    Reported-by: Rob Herring <robh@kernel.org>
    Link: https://lore.kernel.org/linux-riscv/20220803170552.GA2250266-robh@kernel.org/
    Reviewed-by: Rob Herring <robh@kernel.org>
    Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
    ---
    .../bindings/interrupt-controller/sifive,plic-1.0.0.yaml | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
    index 92e0f8c3eff2..99e01f4d0a69 100644
    --- a/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
    +++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
    @@ -66,6 +66,11 @@ properties:
    - enum:
    - allwinner,sun20i-d1-plic
    - const: thead,c900-plic
    + - items:
    + - const: sifive,plic-1.0.0
    + - const: riscv,plic0
    + deprecated: true
    + description: For the QEMU virt machine only

    reg:
    maxItems: 1
    --
    2.37.1
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