linux-kernel - Re: [PATCH v3 1/2] dt-bindings: exynos-dw-mshc-common: add exynos78xx variants

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Message-ID: <640e013f.c20a0220.5d2c5.1904@mx.google.com>
Date:   Sun, 12 Mar 2023 09:43:43 -0700 (PDT)
From:   Sergey Lisov <sleirsgoevy@...il.com>
To:     Ulf Hansson <ulf.hansson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Alim Akhtar <alim.akhtar@...sung.com>,
        Jaehoon Chung <jh80.chung@...sung.com>
Cc:     linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/2] dt-bindings: exynos-dw-mshc-common: add exynos78xx
 variants

> Bindings and DTS (and driver) are always separate.

Okay, will split the patch.

> Compatibles must be specific.

No, this way you'd have tons of identical compatibles that only differ in
the exynosXXXX digits, and are functionally equivalent.

> That's non-bisectable change (also breaking other users of DTS), so you
> need to explain in commit msg rationale - devices were never compatible
> and using exynos7 does not work in certain cases.

Valid point.