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| author | Stephen Warren <swarren@nvidia.com> | 2012-01-25 14:43:27 -0700 |
|---|---|---|
| committer | Olof Johansson <olof@lixom.net> | 2012-02-06 18:21:21 -0800 |
| commit | d17adfdb17fb9f182d1fc5189d4772cd03f187c3 (patch) | |
| tree | 86be2d49064474ce44eec06016d661a042e3ffcd | |
| parent | 797acf705bf440c736b71cc958f46a174ec87d10 (diff) | |
| download | blackbird-obmc-linux-d17adfdb17fb9f182d1fc5189d4772cd03f187c3.tar.gz blackbird-obmc-linux-d17adfdb17fb9f182d1fc5189d4772cd03f187c3.zip | |
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>
| -rw-r--r-- | Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt | 19 | ||||
| -rw-r--r-- | arch/arm/boot/dts/tegra-harmony.dts | 4 | ||||
| -rw-r--r-- | arch/arm/boot/dts/tegra20.dtsi | 5 | ||||
| -rw-r--r-- | arch/arm/boot/dts/tegra30.dtsi | 5 |
4 files changed, 33 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 new file mode 100644 index 000000000000..b5846e21cc2e --- /dev/null +++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt @@ -0,0 +1,19 @@ +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; +}; diff --git a/arch/arm/boot/dts/tegra-harmony.dts b/arch/arm/boot/dts/tegra-harmony.dts index 9a52615c13b8..6e8447dc0202 100644 --- a/arch/arm/boot/dts/tegra-harmony.dts +++ b/arch/arm/boot/dts/tegra-harmony.dts @@ -10,6 +10,10 @@ reg = < 0x00000000 0x40000000 >; }; + pmc@7000f400 { + nvidia,invert-interrupt; + }; + i2c@7000c000 { clock-frequency = <400000>; diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi index 8712449be9e1..3195ad5562d3 100644 --- a/arch/arm/boot/dts/tegra20.dtsi +++ b/arch/arm/boot/dts/tegra20.dtsi @@ -4,6 +4,11 @@ compatible = "nvidia,tegra20"; interrupt-parent = <&intc>; + pmc@7000f400 { + compatible = "nvidia,tegra20-pmc"; + reg = <0x7000e400 0x400>; + }; + intc: interrupt-controller@50041000 { compatible = "arm,cortex-a9-gic"; interrupt-controller; diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi index 8a7e230832d7..fd25e8e9ffd9 100644 --- a/arch/arm/boot/dts/tegra30.dtsi +++ b/arch/arm/boot/dts/tegra30.dtsi @@ -4,6 +4,11 @@ compatible = "nvidia,tegra30"; interrupt-parent = <&intc>; + pmc@7000f400 { + compatible = "nvidia,tegra20-pmc", "nvidia,tegra30-pmc"; + reg = <0x7000e400 0x400>; + }; + intc: interrupt-controller@50041000 { compatible = "arm,cortex-a9-gic"; interrupt-controller; |
