On Tue, Oct 9, 2018 at 6:57 AM Will Deacon <will.deacon@xxxxxxx> wrote: > > Hi Rob, > > On Fri, Oct 05, 2018 at 11:58:25AM -0500, Rob Herring wrote: > > Convert ARM PMU binding to DT schema format using json-schema. > > > > Cc: Will Deacon <will.deacon@xxxxxxx> > > Cc: Mark Rutland <mark.rutland@xxxxxxx> > > Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > > Cc: devicetree@xxxxxxxxxxxxxxx > > Signed-off-by: Rob Herring <robh@xxxxxxxxxx> > > --- > > Documentation/devicetree/bindings/arm/pmu.txt | 70 -------------- > > .../devicetree/bindings/arm/pmu.yaml | 96 +++++++++++++++++++ > > 2 files changed, 96 insertions(+), 70 deletions(-) > > delete mode 100644 Documentation/devicetree/bindings/arm/pmu.txt > > create mode 100644 Documentation/devicetree/bindings/arm/pmu.yaml > > [...] > > > -- interrupts : 1 combined interrupt or 1 per core. If the interrupt is a per-cpu > > - interrupt (PPI) then 1 interrupt should be specified. > > [...] > > > + interrupts: > > + oneOf: > > + - maxItems: 1 > > + - minItems: 2 > > + maxItems: 8 > > + description: 1 interrupt per core. > > + > > + interrupts-extended: > > + $ref: '#/properties/interrupts' > > This seems like a semantic different between the two representations, or am > I missing something here? Specifically, both the introduction of > interrupts-extended and also dropping any mention of using a single per-cpu > interrupt (the single combined case is no longer support by Linux; not sure > if you want to keep it in the binding). 'interrupts-extended' was implied before as it is always supported and outside the scope of the binding. But now it is needed to validate bindings. There must be some use of it and that's why I added it. However, thinking some more about this, I think it may be better to have the tools add this in automatically whenever we have an interrupts property. I guess the single interrupt case is less obvious now with no description (it's the first list item of 'oneOf'). The schema If the single interrupt is not supported, then we can drop it here. Rob
