linux-kernel - Re: [PATCH] dt-bindings: arm: altera: convert socfpga-system.txt to yaml

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Date:   Wed, 4 Oct 2023 08:45:30 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     niravkumar.l.rabara@...el.com, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Dinh Nguyen <dinguyen@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dt-bindings: arm: altera: convert socfpga-system.txt to
 yaml

On 04/10/2023 05:07, niravkumar.l.rabara@...el.com wrote:
> From: Niravkumar L Rabara <niravkumar.l.rabara@...el.com>
> 
> Convert socfpga-system.txt to altr,sys-mgr.yaml.
> 
> Signed-off-by: Niravkumar L Rabara <niravkumar.l.rabara@...el.com>
> ---
>  .../bindings/arm/altera/altr,sys-mgr.yaml     | 50 +++++++++++++++++++
>  .../bindings/arm/altera/socfpga-system.txt    | 25 ----------
>  2 files changed, 50 insertions(+), 25 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/arm/altera/altr,sys-mgr.yaml

arm is only for top-level. What is this this device about? FPGA? SoC?


>  delete mode 100644 Documentation/devicetree/bindings/arm/altera/socfpga-system.txt
> 
> diff --git a/Documentation/devicetree/bindings/arm/altera/altr,sys-mgr.yaml b/Documentation/devicetree/bindings/arm/altera/altr,sys-mgr.yaml
> new file mode 100644
> index 000000000000..8deb70aef664
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/altera/altr,sys-mgr.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/altera/altr,sys-mgr.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Altera SOCFPGA System Manager
> +
> +maintainers:
> +  - Dinh Nguyen <dinguyen@...nel.org>
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - description: Cyclone5/Arria5/Arria10
> +        const: altr,sys-mgr
> +      - description: Stratix10 SoC
> +        items:
> +          - const: altr,sys-mgr-s10
> +          - const: altr,sys-mgr

That's not what old binding was saying. Please describe in the commit
msg differences from pure conversion.

> +
> +  reg:
> +    maxItems: 1
> +
> +  cpu1-start-addr:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: CPU1 start address in hex
> +
> +required:
> +  - compatible
> +  - reg
> +
> +if:

Please keep it here under "allOf:". Will save you one re-indentation on
any new variant.

> +  properties:
> +    compatible:
> +      contains:
> +        const: altr,sys-mgr-s10
> +then:
> +  properties:
> +    cpu1-start-addr: false
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    sysmgr@...08000 {
> +      compatible = "altr,sys-mgr";
> +      reg = <0xffd08000 0x1000>;
> +      cpu1-start-addr = <0xffd080c4>;
> +    };
Best regards,
Krzysztof