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Diffstat (limited to 'Documentation/devicetree/bindings/writing-bindings.rst')
| -rw-r--r-- | Documentation/devicetree/bindings/writing-bindings.rst | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/writing-bindings.rst b/Documentation/devicetree/bindings/writing-bindings.rst index 667816dd7d50..1a51764833a1 100644 --- a/Documentation/devicetree/bindings/writing-bindings.rst +++ b/Documentation/devicetree/bindings/writing-bindings.rst @@ -53,7 +53,17 @@ Properties - DON'T use wildcards or device-family names in compatible strings. - DO use fallback compatibles when devices are the same as or a superset of - prior implementations. + prior implementations. Fallback compatibles are applicable especially + when sharing a programming interface or when able to discover the + variants. + + - DON'T add fake fallback compatibles when software cannot use such to match + and bind to a device, and still operate correctly. + + - DO use the commit message to explain why devices that may appear + compatible in a diff (e.g. no differences in property use, same handling + by the software) but are not made compatible in the binding, are not + compatible. - DO add new compatibles in case there are new features or bugs. |