linux-kernel - Re: [PATCH v2 2/3] dt-bindings: power: reset: convert nvmem-reboot-mode bindings to YAML

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Date:   Mon, 8 May 2023 14:39:34 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Arnd Bergmann <arnd@...db.de>,
        linux-pm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2 2/3] dt-bindings: power: reset: convert
 nvmem-reboot-mode bindings to YAML

Hi,

On Mon, Apr 17, 2023 at 04:55:35PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> 
> Convert the DT binding document for nvmem-reboot-mode from .txt to YAML.
> 
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> ---

Thanks, queued.

-- Sebastian

>  .../power/reset/nvmem-reboot-mode.txt         | 26 ----------
>  .../power/reset/nvmem-reboot-mode.yaml        | 52 +++++++++++++++++++
>  2 files changed, 52 insertions(+), 26 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt
>  create mode 100644 Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.yaml
> 
> diff --git a/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt
> deleted file mode 100644
> index 752d6126d5da..000000000000
> --- a/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.txt
> +++ /dev/null
> @@ -1,26 +0,0 @@
> -NVMEM reboot mode driver
> -
> -This driver gets reboot mode magic value from reboot-mode driver
> -and stores it in a NVMEM cell named "reboot-mode". Then the bootloader
> -can read it and take different action according to the magic
> -value stored.
> -
> -Required properties:
> -- compatible: should be "nvmem-reboot-mode".
> -- nvmem-cells: A phandle to the reboot mode provided by a nvmem device.
> -- nvmem-cell-names: Should be "reboot-mode".
> -
> -The rest of the properties should follow the generic reboot-mode description
> -found in reboot-mode.txt
> -
> -Example:
> -	reboot-mode {
> -		compatible = "nvmem-reboot-mode";
> -		nvmem-cells = <&reboot_mode>;
> -		nvmem-cell-names = "reboot-mode";
> -
> -		mode-normal     = <0xAAAA5501>;
> -		mode-bootloader = <0xBBBB5500>;
> -		mode-recovery   = <0xCCCC5502>;
> -		mode-test       = <0xDDDD5503>;
> -	};
> diff --git a/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.yaml b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.yaml
> new file mode 100644
> index 000000000000..14a262bcbf7c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/power/reset/nvmem-reboot-mode.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/power/reset/nvmem-reboot-mode.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Generic NVMEM reboot mode
> +
> +maintainers:
> +  - Bartosz Golaszewski <bartosz.golaszewski@...aro.org>
> +
> +description:
> +  This driver gets the reboot mode magic value from the reboot-mode driver
> +  and stores it in the NVMEM cell named "reboot-mode". The bootloader can
> +  then read it and take different action according to the value.
> +
> +properties:
> +  compatible:
> +    const: nvmem-reboot-mode
> +
> +  nvmem-cells:
> +    description:
> +      A phandle pointing to the nvmem-cells node where the vendor-specific
> +      magic value representing the reboot mode is stored.
> +    maxItems: 1
> +
> +  nvmem-cell-names:
> +    items:
> +      - const: reboot-mode
> +
> +patternProperties:
> +  "^mode-.+":
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description: Vendor-specific mode value written to the mode register
> +
> +required:
> +  - compatible
> +  - nvmem-cells
> +  - nvmem-cell-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    reboot-mode {
> +        compatible = "nvmem-reboot-mode";
> +        nvmem-cells = <&reboot_reason>;
> +        nvmem-cell-names = "reboot-mode";
> +        mode-recovery = <0x01>;
> +        mode-bootloader = <0x02>;
> +    };
> +...
> -- 
> 2.37.2
> 

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