From 918d98db8c97c01e538e6438e18a69cbceeb5ec6 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Wed, 11 Mar 2015 15:43:48 +0000 Subject: [PATCH] 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 Signed-off-by: Marc Zyngier Link: https://lkml.kernel.org/r/1426088629-15377-7-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper --- .../interrupt-controller/ti,omap4-wugen-mpu | 33 +++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/interrupt-controller/ti,omap4-wugen-mpu 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 000000000000..43effa0a4fe7 --- /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>; + }; -- 2.20.1