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918d98db8c
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@atomide.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Link: https://lkml.kernel.org/r/1426088629-15377-7-git-send-email-marc.zyngier@arm.com Signed-off-by: Jason Cooper <jason@lakedaemon.net>
34 lines
1.2 KiB
Plaintext
34 lines
1.2 KiB
Plaintext
TI OMAP4 Wake-up Generator
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All TI OMAP4/5 (and their derivatives) an interrupt controller that
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routes interrupts to the GIC, and also serves as a wakeup source. It
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is also referred to as "WUGEN-MPU", hence the name of the binding.
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Reguired properties:
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- compatible : should contain at least "ti,omap4-wugen-mpu" or
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"ti,omap5-wugen-mpu"
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- reg : Specifies base physical address and size of the registers.
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- interrupt-controller : Identifies the node as an interrupt controller.
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- #interrupt-cells : Specifies the number of cells needed to encode an
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interrupt source. The value must be 3.
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- interrupt-parent : a phandle to the GIC these interrupts are routed
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to.
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Notes:
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- Because this HW ultimately routes interrupts to the GIC, the
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interrupt specifier must be that of the GIC.
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- Only SPIs can use the WUGEN as an interrupt parent. SGIs and PPIs
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are explicitly forbiden.
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Example:
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wakeupgen: interrupt-controller@48281000 {
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compatible = "ti,omap5-wugen-mpu", "ti,omap4-wugen-mpu";
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interrupt-controller;
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#interrupt-cells = <3>;
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reg = <0x48281000 0x1000>;
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interrupt-parent = <&gic>;
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};
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