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authorSascha Hauer <s.hauer@pengutronix.de>2015-05-06 08:56:43 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2015-05-06 08:56:43 +0200
commit461f8cfc7ea788428240271818363333ceff5c4c (patch)
treea3d6e3737c203ea29f8db2a6ddaadc326247376c /dts/Bindings/interrupt-controller/cdns,xtensa-pic.txt
parent6345d37ae50c3ac8dd0e6176bc846fe211cbddd4 (diff)
downloadbarebox-461f8cfc7ea788428240271818363333ceff5c4c.tar.gz
dts: update to v4.1-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/interrupt-controller/cdns,xtensa-pic.txt')
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+* Xtensa built-in Programmable Interrupt Controller (PIC)
+
+Required properties:
+- compatible: Should be "cdns,xtensa-pic".
+- interrupt-controller: Identifies the node as an interrupt controller.
+- #interrupt-cells: The number of cells to define the interrupts.
+ It may be either 1 or 2.
+ When it's 1, the first cell is the internal IRQ number.
+ When it's 2, the first cell is the IRQ number, and the second cell
+ specifies whether it's internal (0) or external (1).
+ Periferals are usually connected to a fixed external IRQ, but for different
+ core variants it may be mapped to different internal IRQ.
+ IRQ sensitivity and priority are fixed for each core variant and may not be
+ changed at runtime.
+
+Examples:
+ pic: pic {
+ compatible = "cdns,xtensa-pic";
+ /* one cell: internal irq number,
+ * two cells: second cell == 0: internal irq number
+ * second cell == 1: external irq number
+ */
+ #interrupt-cells = <2>;
+ interrupt-controller;
+ };