On Fri, 12 Jul 2024 14:11:46 +0200, Krzysztof Kozlowski wrote: > There are devices in the wild with non-updatable firmware coming with > ACPI tables with rejected compatibles, e.g. "ltr,ltrf216a". Linux > kernel still supports this device via ACPI PRP0001, however the > compatible was never accepted to bindings. > > There are also several early PowerPC or SPARC platforms using > compatibles for their OpenFirmware, but without in-tree DTS. Often the > legacy compatible is not correct in terms of current Devicetree > specification, e.g. missing vendor prefix. > > Finally there are also Linux-specific tools and test code with > compatibles. > > Add a schema covering above cases purely to satisfy the DT schema and > scripts/checkpatch.pl checks for undocumented compatibles. For > ltr,ltrf216a this also documents the consensus: compatible is allowed > only via ACPI PRP0001, but not bindings. > > Link: https://lore.kernel.org/all/20240705095047.90558-1-marex@xxxxxxx/ > Link: https://lore.kernel.org/lkml/20220731173446.7400bfa8@jic23-huawei/T/#me55be502302d70424a85368c2645c89f860b7b40 > Cc: Marek Vasut <marex@xxxxxxx> > Cc: Jonathan Cameron <jic23@xxxxxxxxxx> > Cc: Sebastian Reichel <sebastian.reichel@xxxxxxxxxxxxx> > Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> > > --- > > Changes in v3: > 1. Incorrect->Legacy > 2. Drop ohci-littledian > 3. Drop unittest > > Changes in v2: > 1. Rename to incomplete-devices.yaml > 2. Add many compatibles based on Rob's feedback, rewrite descriptions in > the schema. > --- > .../bindings/incomplete-devices.yaml | 137 ++++++++++++++++++ > 1 file changed, 137 insertions(+) > create mode 100644 Documentation/devicetree/bindings/incomplete-devices.yaml > Applied, thanks!
