checks: Add an interrupt-map check

Add a check for parsing 'interrupt-map' properties. The check primarily
tests parsing 'interrupt-map' properties which depends on and the parent
interrupt controller (or another map) node.

Note that this does not require '#address-cells' in the interrupt-map
parent, but treats missing '#address-cells' as 0 which is how the Linux
kernel parses it. There's numerous cases that expect this behavior.

Cc: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Message-Id: <20211015213527.2237774-1-robh@kernel.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

1 files changed, 20 insertions, 0 deletions

diff --git a/tests/bad-interrupt-map-mask.dts b/tests/bad-interrupt-map-mask.dts
new file mode 100644
index 0000000..10eaffd
--- /dev/null
+++ b/tests/bad-interrupt-map-mask.dts
@@ -0,0 +1,20 @@
+/dts-v1/;
+
+/ {
+	interrupt-parent = <&intc>;
+	intc: interrupt-controller {
+		#interrupt-cells = <3>;
+		interrupt-controller;
+	};
+
+	node {
+		#address-cells = <0>;
+		#interrupt-cells = <1>;
+		interrupt-map = <1 &intc 1 2 3>;
+		interrupt-map-mask = <0 0>;
+
+		child {
+			interrupts = <1>;
+		};
+	};
+};