Messages in this thread |  | | Date | Sat, 9 Apr 2022 12:49:38 +0200 | Subject | Re: [PATCH] dt-bindings: interrupt-controller: arm,gic-v3: Make the v2 compat requirements explicit | From | Krzysztof Kozlowski <> |
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On 09/04/2022 12:16, Marc Zyngier wrote: > A common mistake when writing a device tree for a platform that is using > GICv3 with ancient CPUs is to overlook the MMIO frames that implement > the GICv2 compatibility feature, because this feature is implemented by > the CPUs and not by the GIC itself. > > The compatibility feature itself is optional (all the modern > implementations have dropped it), but is present in all the ARM Ltd > implementations of the ARMv8.0 architecture (A3x, A53, A57, A72, A73), > and many others from various implementers. > > Make it explicit that GICC, GICH and GICV are required for these CPUs. > Also take this opportunity to update my email address, as people keep > sending them to the wrong place... > > Signed-off-by: Marc Zyngier <maz@kernel.org> > Cc: Rob Herring <robh+dt@kernel.org> > Cc: Krzysztof Kozlowski <krzk+dt@kernel.org> > --- > .../bindings/interrupt-controller/arm,gic-v3.yaml | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) >
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Best regards, Krzysztof
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