Files
android_kernel_xiaomi_sm8450/arch/arm/boot/dts/testcases/tests-interrupts.dtsi
Grant Likely 79d9701559 of/irq: create interrupts-extended property
The standard interrupts property in device tree can only handle
interrupts coming from a single interrupt parent. If a device is wired
to multiple interrupt controllers, then it needs to be attached to a
node with an interrupt-map property to demux the interrupt specifiers
which is confusing. It would be a lot easier if there was a form of the
interrupts property that allows for a separate interrupt phandle for
each interrupt specifier.

This patch does exactly that by creating a new interrupts-extended
property which reuses the phandle+arguments pattern used by GPIOs and
other core bindings.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
[grant.likely: removed versatile platform hunks into separate patch]
Cc: Rob Herring <rob.herring@calxeda.com>
2013-10-28 16:48:14 -07:00

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/ {
testcase-data {
interrupts {
#address-cells = <0>;
test_intc0: intc0 {
interrupt-controller;
#interrupt-cells = <1>;
};
test_intc1: intc1 {
interrupt-controller;
#interrupt-cells = <3>;
};
test_intc2: intc2 {
interrupt-controller;
#interrupt-cells = <2>;
};
test_intmap0: intmap0 {
#interrupt-cells = <1>;
#address-cells = <0>;
interrupt-map = <1 &test_intc0 9>,
<2 &test_intc1 10 11 12>,
<3 &test_intc2 13 14>,
<4 &test_intc2 15 16>;
};
test_intmap1: intmap1 {
#interrupt-cells = <2>;
#address-cells = <0>;
interrupt-map = <1 2 &test_intc0 15>;
};
interrupts0 {
interrupt-parent = <&test_intc0>;
interrupts = <1>, <2>, <3>, <4>;
};
interrupts1 {
interrupt-parent = <&test_intmap0>;
interrupts = <1>, <2>, <3>, <4>;
};
interrupts-extended0 {
interrupts-extended = <&test_intc0 1>,
<&test_intc1 2 3 4>,
<&test_intc2 5 6>,
<&test_intmap0 1>,
<&test_intmap0 2>,
<&test_intmap0 3>,
<&test_intmap1 1 2>;
};
};
};
};