linux-kernel - Re: [PATCH 1/3] dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file

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Message-ID: <90091f9a-9fb0-4e5b-9574-0dc12bb7fe27@kernel.org>
Date: Sun, 17 Aug 2025 07:48:34 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Ciprian Costea <dan.carpenter@...aro.org>,
 Srinivas Kandagatla <srini@...nel.org>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>,
 Ciprian Costea <ciprianmarian.costea@....com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org, linaro-s32@...aro.org,
 NXP S32 Linux Team <s32@....com>
Subject: Re: [PATCH 1/3] dt-bindings: nvmem: Add the nxp,s32g-ocotp yaml file

On 16/08/2025 12:47, Ciprian Costea wrote:
> Add bindings to expose the On Chip One-Time Programmable Controller
> (OCOTP) for the NXP s32g chipset.  There are three versions of this
> chip but they're compatible so we can fall back to the nxp,s32g2-ocotp
> compatible.
> 
> Signed-off-by: Ciprian Costea <ciprianmarian.costea@....com>
> Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
> ---
>  .../bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml  | 57 +++++++++++++++++++
>  1 file changed, 57 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
> 
> diff --git a/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml b/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
> new file mode 100644
> index 000000000000..19f3bb6b7eb0
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/nxp,s32g-ocotp-nvmem.yaml
> @@ -0,0 +1,57 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/nxp,s32g-ocotp-nvmem.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP S32G OCOTP NVMEM driver
> +
> +maintainers:
> +  - Ciprian Costea <ciprianmarian.costea@....com>
> +
> +description: |
> +  The drivers provides an interface to access One Time
> +  Programmable memory pages, such as TMU fuse values.
> +
> +allOf:
> +  - $ref: nvmem.yaml#
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - items:
> +          - enum:
> +              - nxp,s32g3-ocotp
> +              - nxp,s32r45-ocotp
> +          - const: nxp,s32g2-ocotp
> +
> +  reg:
> +    description:
> +      Address and Size of the fuse bank to be read.

Drop description, redundant.

> +    maxItems: 1
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 1

Drop these cells, already in nvmem.yaml.

> +
> +required:
> +  - compatible
> +  - reg
> +  - '#address-cells'
> +  - '#size-cells'
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/nvmem/s32g-ocotp-nvmem.h>

There is no such file.

> +
> +    ocotp: ocotp@...a4000 {
> +      compatible = "nxp,s32g2-ocotp";
> +      reg = <0x400a4000 0x400>;
> +      #address-cells = <1>;
> +      #size-cells = <1>;
> +      status = "okay";

Please drop status

> +    };


Best regards,
Krzysztof