linux-kernel - Re: [PATCH 1/2] dt-bindings: bluetooth: broadcom: Add BCM4349B1 DT binding

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Message-ID: <CACRpkdbKUHu-T2whY4wgk5xnR7X-hptEg+Jm5Hudq8ieQi3VwA@mail.gmail.com>
Date:   Sun, 22 May 2022 23:03:28 +0200
From:   Linus Walleij <linus.walleij@...aro.org>
To:     Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc:     Marcel Holtmann <marcel@...tmann.org>,
        Johan Hedberg <johan.hedberg@...il.com>,
        Luiz Augusto von Dentz <luiz.dentz@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, kernel@...gutronix.de,
        linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, netdev@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: bluetooth: broadcom: Add BCM4349B1 DT binding

On Sat, May 21, 2022 at 10:07 PM Ahmad Fatoum <a.fatoum@...gutronix.de> wrote:

> The BCM4349B1 chip is a single-chip Bluetooth 5.0 controller and
> Transceiver. It is contained in the CYW/BCM89359 WiFi+BT package.

So the BT and the package have two different names.

> +      - brcm,bcm4349-bt

Then why do you have to tag on "-bt" on this compatible?

That is typically used when the wifi and bt has the *same* name, so
the only way to distinguish between them is a suffix.

Yours,
Linus Walleij