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

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Date:   Thu, 15 Jun 2023 22:22:53 +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 15/06/2023 16:46, Alexander Stein wrote:
>>> +          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.
> 
> xx is a wildcard only for modules TQMa93xx, depending on the soldered SoC, but 
> not for the mainboard MBa93xx.
> You are right that there is the ordering number MBa9352LA-AA, so the 
> compatible would be "tq,imx93-tqma9352-mba9352la". But the actual values for 
> the wildcards is copied from the soldered module. So using a TQMa9351LA would 
> result in MBa9351LA-AA, although the mainboard is identical.

OK

Best regards,
Krzysztof