linux-kernel - Re: [PATCH 2/8] dt-bindings: serial: fsl-linflexuart: convert to json-schema format

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Date:   Thu, 12 Aug 2021 18:04:44 +0200
From:   Andreas Färber <afaerber@...e.de>
To:     Chester Lin <clin@...e.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-serial@...r.kernel.org,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Oleksij Rempel <linux@...pel-privat.de>,
        Stefan Riedmueller <s.riedmueller@...tec.de>,
        Matthias Schiffer <matthias.schiffer@...tq-group.com>,
        Li Yang <leoyang.li@....com>,
        Fabio Estevam <festevam@...il.com>,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Frieder Schrempf <frieder.schrempf@...tron.de>,
        Tim Harvey <tharvey@...eworks.com>,
        Jagan Teki <jagan@...rulasolutions.com>, s32@....com,
        catalin-dan.udma@....com, bogdan.hamciuc@....com,
        bogdan.folea@....com, ciprianmarian.costea@....com,
        radu-nicolae.pirea@....com, ghennadi.procopciuc@....com,
        Matthias Brugger <matthias.bgg@...il.com>,
        "Ivan T . Ivanov" <iivanov@...e.de>, "Lee, Chun-Yi" <jlee@...e.com>
Subject: Re: [PATCH 2/8] dt-bindings: serial: fsl-linflexuart: convert to
 json-schema format

On 05.08.21 08:54, Chester Lin wrote:
> Convert the FSL LINFlexD UART binding to json-schema.
> 
> Signed-off-by: Chester Lin <clin@...e.com>
> ---
>  .../bindings/serial/fsl,s32-linflexuart.txt   | 22 ---------
>  .../bindings/serial/fsl,s32-linflexuart.yaml  | 48 +++++++++++++++++++
>  2 files changed, 48 insertions(+), 22 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
>  create mode 100644 Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml

Thanks for your effort, Chester.

> diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
> deleted file mode 100644
> index f1bbe0826be5..000000000000
> --- a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.txt
> +++ /dev/null
> @@ -1,22 +0,0 @@
> -* Freescale LINFlexD UART
> -
> -The LINFlexD controller implements several LIN protocol versions, as well as
> -support for full-duplex UART communication through 8-bit and 9-bit frames.
> -
> -See chapter 47 ("LINFlexD") in the reference manual[1].
> -
> -Required properties:
> -- compatible :
> -  - "fsl,s32v234-linflexuart" for LINFlexD configured in UART mode, which
> -    is compatible with the one integrated on S32V234 SoC
> -- reg : Address and length of the register set for the device
> -- interrupts : Should contain uart interrupt
> -
> -Example:
> -uart0: serial@...53000 {
> -	compatible = "fsl,s32v234-linflexuart";
> -	reg = <0x0 0x40053000 0x0 0x1000>;
> -	interrupts = <0 59 4>;
> -};
> -
> -[1] https://www.nxp.com/webapp/Download?colCode=S32V234RM
> diff --git a/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
> new file mode 100644
> index 000000000000..acfe34706ccb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/serial/fsl,s32-linflexuart.yaml
> @@ -0,0 +1,48 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

Since this is dual-licensed and BSD-2-Clause would seem compatible with
GPLv3, this could probably be s/GPL-2.0-only/GPL-2.0-or-later/ ? Not a
blocker.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/serial/fsl,s32-linflexuart.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Freescale LINFlexD UART
> +
> +description: |
> +  The LINFlexD controller implements several LIN protocol versions, as well
> +  as support for full-duplex UART communication through 8-bit and 9-bit
> +  frames. See chapter 47 ("LINFlexD") in the reference manual
> +  https://www.nxp.com/webapp/Download?colCode=S32V234RM.
> +
> +maintainers:
> +  - Greg Kroah-Hartman <gregkh@...uxfoundation.org>
> +  - Rob Herring <robh@...nel.org>

@Shawn: I assume we need both of them to ack this (or an S32V maintainer
to volunteer), since they were not named in the .txt file before?

> +
> +allOf:
> +  - $ref: "serial.yaml"
> +
> +properties:
> +  compatible:
> +    description: The LINFlexD controller on S32V234 SoC, which can be
> +      configured in UART mode.
> +    items:
> +      - const: fsl,s32v234-linflexuart
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    serial@...53000 {
> +        compatible = "fsl,s32v234-linflexuart";
> +        reg = <0x40053000 0x1000>;
> +        interrupts = <0 59 4>;
> +    };

Otherwise looking sane,

Reviewed-by: Andreas Färber <afaerber@...e.de>

Thanks,
Andreas

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