Commit-ID: 918d98db8c97c01e538e6438e18a69cbceeb5ec6
Gitweb: http://git.kernel.org/tip/918d98db8c97c01e538e6438e18a69cbceeb5ec6
Author: Marc Zyngier <marc.zyngier@xxxxxxx>
AuthorDate: Wed, 11 Mar 2015 15:43:48 +0000
Committer: Jason Cooper <jason@xxxxxxxxxxxxxx>
CommitDate: Sun, 15 Mar 2015 00:56:08 +0000
DT: omap4/5: add binding for the wake-up generator
Add a binding for the OMAP4/5 wake-up generator, which acts as
an interrupt controller feeding into the GIC.
Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
Link: https://lkml.kernel.org/r/1426088629-15377-7-git-send-email-marc.zyngier@xxxxxxx
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
---
.../interrupt-controller/ti,omap4-wugen-mpu | 33 ++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu b/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu
new file mode 100644
index 0000000..43effa0
--- /dev/null
+++ b/Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu
@@ -0,0 +1,33 @@
+TI OMAP4 Wake-up Generator
+
+All TI OMAP4/5 (and their derivatives) an interrupt controller that
+routes interrupts to the GIC, and also serves as a wakeup source. It
+is also referred to as "WUGEN-MPU", hence the name of the binding.
+
+Reguired properties:
+
+- compatible : should contain at least "ti,omap4-wugen-mpu" or
+ "ti,omap5-wugen-mpu"
+- 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 must be 3.
+- interrupt-parent : a phandle to the GIC these interrupts are routed
+ to.
+
+Notes:
+
+- Because this HW ultimately routes interrupts to the GIC, the
+ interrupt specifier must be that of the GIC.
+- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
+ are explicitly forbiden.
+
+Example:
+
+ wakeupgen: interrupt-controller@48281000 {
+ compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
+ interrupt-controller;
+ #interrupt-cells = <3>;
+ reg = <0x48281000 0x1000>;
+ interrupt-parent = <&gic>;
+ };
--
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