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authorFlorian Fainelli <f.fainelli@gmail.com>2017-06-26 14:15:02 -0700
committerStefano Babic <sbabic@denx.de>2017-07-12 09:44:22 +0200
commit022b7fb5159b0fae15ee15616df02941e4d05c86 (patch)
treead818d72bfc92940d9bb21a6263af841f90947b9 /Documentation
parent61366b71a8950aae48ce9e00295a16cf65ac4f02 (diff)
downloadu-boot-022b7fb5159b0fae15ee15616df02941e4d05c86.tar.gz
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>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.txt22
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diff --git a/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.txt b/Documentation/devicetree/bindings/rtc/brcm,brcmstb-waketimer.txt
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+Broadcom STB wake-up Timer
+
+The Broadcom STB wake-up timer provides a 27Mhz resolution timer, with the
+ability to wake up the system from low-power suspend/standby modes.
+
+Required properties:
+- compatible : should contain "brcm,brcmstb-waketimer"
+- reg : the register start and length for the WKTMR block
+- interrupts : The TIMER interrupt
+- interrupt-parent: The phandle to the Always-On (AON) Power Management (PM) L2
+ interrupt controller node
+- clocks : The phandle to the UPG fixed clock (27Mhz domain)
+
+Example:
+
+waketimer@f0411580 {
+ compatible = "brcm,brcmstb-waketimer";
+ reg = <0xf0411580 0x14>;
+ interrupts = <0x3>;
+ interrupt-parent = <&aon_pm_l2_intc>;
+ clocks = <&upg_fixed>;
+};