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authorStephen Warren <swarren@nvidia.com>2012-01-25 14:43:27 -0700
committerOlof Johansson <olof@lixom.net>2012-02-06 18:21:21 -0800
commitd17adfdb17fb9f182d1fc5189d4772cd03f187c3 (patch)
tree86be2d49064474ce44eec06016d661a042e3ffcd /Documentation/devicetree/bindings/arm/tegra
parent797acf705bf440c736b71cc958f46a174ec87d10 (diff)
ARM: dt: Add binding for Tegra PMC
The Tegra PMC (Power Management Controller) interfaces with an external PMU (Power Management Unit), and controls wake-up from sleep modes. This initial binding is the bare minimum required to control the PMC's inversion of the PMU's interrupt signal. Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'Documentation/devicetree/bindings/arm/tegra')
-rw-r--r--Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt19
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
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+++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt
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+NVIDIA Tegra Power Management Controller (PMC)
+
+Properties:
+- name : Should be pmc
+- compatible : Should contain "nvidia,tegra<chip>-pmc".
+- reg : Offset and length of the register set for the device
+- nvidia,invert-interrupt : If present, inverts the PMU interrupt signal.
+ The PMU is an external Power Management Unit, whose interrupt output
+ signal is fed into the PMC. This signal is optionally inverted, and then
+ fed into the ARM GIC. The PMC is not involved in the detection or
+ handling of this interrupt signal, merely its inversion.
+
+Example:
+
+pmc@7000f400 {
+ compatible = "nvidia,tegra20-pmc";
+ reg = <0x7000e400 0x400>;
+ nvidia,invert-interrupt;
+};