Add binding documentation for NXP LPC1850 GPIO Pin Interrupt (PINT)
controller.
Signed-off-by: Joachim Eastwood <manabian@xxxxxxxxx>
---
.../interrupt-controller/nxp,lpc1850-gpio-pint.txt | 26 ++++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/interrupt-controller/nxp,lpc1850-gpio-pint.txt
diff --git a/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc1850-gpio-pint.txt b/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc1850-gpio-pint.txt
new file mode 100644
index 0000000..0d59d31
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/nxp,lpc1850-gpio-pint.txt
@@ -0,0 +1,26 @@
+NXP LPC18xx/43xx GPIO Pin Interrupt (PINT) controller
+
+Required properties:
+
+- compatible : should be "nxp,lpc1850-gpio-pint".
+- reg : Specifies base physical address and size of the registers.
+- interrupt-controller : Identifies the node as an interrupt controller
+- #interrupt-cells : Specifies the number of cells needed to encode an
+ interrupt source. The value shall be 2.
+- interrupts : Must contain the interrupt numbers from the parent controller.
+ This defines the mapping between the controllers where the first
+ interrupt is mapped to pint hwirq 0 and so on. Which interrupts
+ that are connected to where and the number of is device specific.
+ For lpc1850 the mapping is 32 33 34 35 36 37 38 39 (8 in total).
+- clocks: Must contain a reference to the functional clock.
+
+Example:
+
+pint: interrupt-controller@40087000 {
+ compatible = "nxp,lpc1850-gpio-pint";
+ reg = <0x40087000 0x1000>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ interrupts = <32 33 34 35 36 37 38 39>;
+ clocks = <&ccu1 CLK_CPU_GPIO>;
+};
--
2.8.0
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