linux-kernel - [PATCH v3 5/6] ARM: rockchip: add power-management-unit dt node

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Date:	Fri, 5 Jul 2013 14:42:57 +0200
From:	Heiko Stübner <heiko@...ech.de>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	Olof Johansson <olof@...om.net>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	Grant Likely <grant.likely@...aro.org>,
	Rob Herring <robherring2@...il.com>,
	devicetree-discuss@...ts.ozlabs.org,
	Russell King <linux@....linux.org.uk>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	linux-kernel@...r.kernel.org,
	"Greg Kroah-Hartman" <gregkh@...uxfoundation.org>,
	Ulrich Prinz <ulrich.prinz@...glemail.com>
Subject: [PATCH v3 5/6] ARM: rockchip: add power-management-unit dt node

The pmu is needed to bring up the cores during smp operations.
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/rk3066a.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/rk3066a.dtsi b/arch/arm/boot/dts/rk3066a.dtsi
index 24d1941..43ac7c8 100644
--- a/arch/arm/boot/dts/rk3066a.dtsi
+++ b/arch/arm/boot/dts/rk3066a.dtsi
@@ -59,6 +59,11 @@
 			mmio-sram-reserved = <0x0 0x50>;
 		};
 
+		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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