linux-kernel - [PATCH v6 5/6] ARM: rockchip: add power-management-unit

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Message-ID: <2033803.ve2pEnCxjZ@phil>
Date:	Wed, 15 Jan 2014 22:43:11 +0100
From:	Heiko Stübner <heiko@...ech.de>
To:	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Cc:	arm@...nel.org, Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robherring2@...il.com>,
	devicetree@...r.kernel.org, Philipp Zabel <p.zabel@...gutronix.de>,
	linux-kernel@...r.kernel.org,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>
Subject: [PATCH v6 5/6] ARM: rockchip: add power-management-unit

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@...ech.de>
Tested-by: Ulrich Prinz <ulrich.prinz@...glemail.com>
---
 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@...04000 {
+		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@...04000 {
+			compatible = "rockchip,rk3066-pmu";
+			reg = <0x20004000 0x100>;
+		};
+
 		gic: interrupt-controller@...3d000 {
 			compatible = "arm,cortex-a9-gic";
 			interrupt-controller;
-- 
1.7.10.4


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