dt-bindings: Document the Broadcom STB wake-up timer node
Document the binding for the Broadcom STB SoCs wake-up timer node allowing the system to generate alarms and exit low power states. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
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Broadcom STB wake-up Timer
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The Broadcom STB wake-up timer provides a 27Mhz resolution timer, with the
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ability to wake up the system from low-power suspend/standby modes.
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Required properties:
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- compatible : should contain "brcm,brcmstb-waketimer"
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- reg : the register start and length for the WKTMR block
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- interrupts : The TIMER interrupt
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- interrupt-parent: The phandle to the Always-On (AON) Power Management (PM) L2
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interrupt controller node
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- clocks : The phandle to the UPG fixed clock (27Mhz domain)
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Example:
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waketimer@f0411580 {
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compatible = "brcm,brcmstb-waketimer";
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reg = <0xf0411580 0x14>;
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interrupts = <0x3>;
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interrupt-parent = <&aon_pm_l2_intc>;
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clocks = <&upg_fixed>;
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};
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