Re: [PATCH v2 1/2] dt-bindings: reset: Add YAML schemas for the Intel Reset controller

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On Mon, Aug 26, 2019 at 4:52 AM Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx> wrote:
>
> Hi Rob,
>
> On 8/23/2019 8:25 PM, Rob Herring wrote:
> > On Fri, Aug 23, 2019 at 12:28 AM Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx> wrote:
> >> Add YAML schemas for the reset controller on Intel
> >> Lightening Mountain (LGM) SoC.
> >>
> >> Signed-off-by: Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx>
> >> ---
> >> Changes on v2:
> >>      Address review comments
> >>        Update the compatible property definition
> >>        Add description for reset-cells
> >>        Add 'additionalProperties: false' property
> >>
> >>   .../bindings/reset/intel,syscon-reset.yaml         | 53 ++++++++++++++++++++++
> >>   1 file changed, 53 insertions(+)
> >>   create mode 100644 Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
> >>
> >> diff --git a/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml b/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
> >> new file mode 100644
> >> index 000000000000..3403a967190a
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
> >> @@ -0,0 +1,53 @@
> >> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> >> +%YAML 1.2
> >> +---
> >> +$id: http://devicetree.org/schemas/reset/intel,syscon-reset.yaml#
> >> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> >> +
> >> +title: Intel Lightening Mountain SoC System Reset Controller
> >> +
> >> +maintainers:
> >> +  - Dilip Kota <eswara.kota@xxxxxxxxxxxxxxx>
> >> +
> >> +properties:
> >> +  compatible:
> >> +    items:
> >> +      - const: intel,rcu-lgm
> >> +      - const: syscon
> >> +
> >> +  reg:
> >> +    description: Reset controller register base address and size
> >> +
> >> +  intel,global-reset:
> >> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> >> +    description: Global reset register offset and bit offset.
> >> +
> >> +  "#reset-cells":
> >> +    const: 2
> >> +    description: |
> >> +      The 1st cell is the register offset.
> >> +      The 2nd cell is the bit offset in the register.
> >> +
> >> +required:
> >> +  - compatible
> >> +  - reg
> >> +  - intel,global-reset
> >> +  - "#reset-cells"
> >> +
> >> +additionalProperties: false
> >> +
> >> +examples:
> >> +  - |
> >> +    rcu0: reset-controller@00000000 {
> >> +        compatible = "intel,rcu-lgm", "syscon";
> >> +        reg = <0x000000 0x80000>;
> >> +        intel,global-reset = <0x10 30>;
> >> +        #reset-cells = <2>;
> >> +    };
> >> +
> >> +    pcie_phy0: pciephy@... {
> >> +        ...
> > You need to run 'make dt_binding_check' and fix the warnings. The
> > example has to be buildable and it is not.
>
> Sure, i  will correct this pcie_phy0 node. But i didn't get any warnings
> for make dt_binding_check
>
>    CHKDT Documentation/devicetree/bindings/reset/intel,syscon-reset.yaml
> DTC Documentation/devicetree/bindings/arm/renesas.example.dt.yaml
> FATAL ERROR: Unknown output format "yaml"
>
> Will DTC report about the example node errors? But, DTC is failing with
> FATAL_ERROR.
> I tried it even after installing libyaml and headers in my local
> directory and export the path, but no luck.(ref:
> https://lkml.org/lkml/2018/12/3/951)
> Could you please let me know if i miss anything and help me to proceed
> further.

See Documentation/devicetree/writing-schema.md

Rob



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