linux-kernel - Re: [PATCH 1/3] dt: bindings: add bindings for TQMa93xxLA SOM

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Date:   Fri, 9 Jun 2023 17:58:17 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Alexander Stein <alexander.stein@...tq-group.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>, Marek Vasut <marex@...x.de>
Cc:     Markus Niebel <Markus.Niebel@...tq-group.com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux@...tq-group.com
Subject: Re: [PATCH 1/3] dt: bindings: add bindings for TQMa93xxLA SOM

On 09/06/2023 15:29, Alexander Stein wrote:
> From: Markus Niebel <Markus.Niebel@...tq-group.com>
> 
> TQMa93xxLA is a SOM variant in the TQ-Systems GmbH TQMa93xx series using
> NXP i.MX93 CPU on an LGA type board.
> MBa93xxCA is a starterkit base board for TQMa93xxLA on an adapter board.

Please use subject prefixes matching the subsystem. You can get them for
example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory
your patch is touching.

It is dt-bindings, not something else.

A nit, subject: drop second/last, redundant "bindings for". The
"dt-bindings" prefix is already stating that these are bindings. One
bindings is enough.


> 
> Signed-off-by: Markus Niebel <Markus.Niebel@...tq-group.com>
> Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
> ---
>  .../devicetree/bindings/arm/fsl.yaml          | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/arm/fsl.yaml b/Documentation/devicetree/bindings/arm/fsl.yaml
> index 2510eaa8906dd..8048c7f6a299d 100644
> --- a/Documentation/devicetree/bindings/arm/fsl.yaml
> +++ b/Documentation/devicetree/bindings/arm/fsl.yaml
> @@ -1219,6 +1219,25 @@ properties:
>                - fsl,imxrt1170-evk         # i.MXRT1170 EVK Board
>            - const: fsl,imxrt1170
>  
> +      - description:
> +          TQMa93xxLA and TQMa93xxCA are two series of feature compatible SOM
> +          using NXP i.MX93 SOC in 11x11 mm package.
> +          TQMa93xxLA is designed to be soldered on different carrier boards.
> +          TQMa93xxCA is a compatible variant using board to board connectors.
> +          All SOM and CPU variants use the same device tree hence only one
> +          compatible is needed. Bootloader disables all features not present
> +          in the assembled SOC.
> +          MBa93xxCA mainboard can be used as starterkit for the SOM
> +          soldered on an adapter board or for the connector variant
> +          MBa93xxLA mainboard is a single board computer using the solderable
> +          SOM variant
> +        items:
> +          - enum:
> +              - tq,imx93-tqma9352-mba93xxca # TQ-Systems GmbH i.MX93 TQMa93xxCA/LA SOM on MBa93xxCA
> +              - tq,imx93-tqma9352-mba93xxla # TQ-Systems GmbH i.MX93 TQMa93xxLA SOM on MBa93xxLA SBC

xx sound like wildcard which you should not use. If you open the product
page, it also suggests that.

Best regards,
Krzysztof