[PATCH v8 5/6] ARM: rockchip: add power-management-unit
From: heiko@sntech.de (Heiko Stübner)
Date: 2014-02-25 11:49:08
Also in:
linux-devicetree, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The pmu is needed to bring up the cores during smp operations and later also other system parts. Therefore add a node and documentation for it. Signed-off-by: Heiko Stuebner <heiko@sntech.de> Tested-by: Ulrich Prinz <redacted> --- Documentation/devicetree/bindings/arm/rockchip/pmu.txt | 16 ++++++++++++++++ arch/arm/boot/dts/rk3xxx.dtsi | 5 +++++ 2 files changed, 21 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/rockchip/pmu.txt
diff --git a/Documentation/devicetree/bindings/arm/rockchip/pmu.txt b/Documentation/devicetree/bindings/arm/rockchip/pmu.txt
new file mode 100644
index 0000000..3ee9b42
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/rockchip/pmu.txt@@ -0,0 +1,16 @@ +Rockchip power-management-unit: +------------------------------- + +The pmu is used to turn off and on different power domains of the SoCs +This includes the power to the CPU cores. + +Required node properties: +- compatible value : = "rockchip,rk3066-pmu"; +- reg : physical base address and the size of the registers window + +Example: + + pmu at 20004000 { + compatible = "rockchip,rk3066-pmu"; + reg = <0x20004000 0x100>; + };
diff --git a/arch/arm/boot/dts/rk3xxx.dtsi b/arch/arm/boot/dts/rk3xxx.dtsi
index 0a3d5b1..26e5a96 100644
--- a/arch/arm/boot/dts/rk3xxx.dtsi
+++ b/arch/arm/boot/dts/rk3xxx.dtsi@@ -31,6 +31,11 @@ reg = <0x1013c000 0x100>; }; + pmu at 20004000 { + compatible = "rockchip,rk3066-pmu"; + reg = <0x20004000 0x100>; + }; + gic: interrupt-controller at 1013d000 { compatible = "arm,cortex-a9-gic"; interrupt-controller;
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1.8.5.3