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authorTomasz Figa <t.figa@samsung.com>2012-11-22 00:21:17 +0900
committerKukjin Kim <kgene.kim@samsung.com>2012-11-22 00:38:59 +0900
commit8a65d2365df0635da13ae30c01e217c477c9ce3e (patch)
treea87b1bc99d4f4af42de72e91e1caf2d5bf4ce271 /Documentation/devicetree/bindings/arm
parent7add0ec0fef19d5b7a3ae38c5deb80819a065a17 (diff)
ARM: EXYNOS: Bind devices to power domains using DT
This patch adds a way to specify bindings between devices and power domains using device tree. A device can be bound to particular power domain by adding a power-domain property containing a phandle to the domain. The device will be bound to the domain before binding a driver to it and unbound after unbinding a driver from it. Signed-off-by: Tomasz Figa <t.figa@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'Documentation/devicetree/bindings/arm')
-rw-r--r--Documentation/devicetree/bindings/arm/exynos/power_domain.txt13
1 files changed, 12 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
index 843b5462231..5216b419016 100644
--- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
+++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
@@ -4,14 +4,25 @@ Exynos processors include support for multiple power domains which are used
to gate power to one or more peripherals on the processor.
Required Properties:
-- compatiable: should be one of the following.
+- compatible: should be one of the following.
* samsung,exynos4210-pd - for exynos4210 type power domain.
- reg: physical base address of the controller and length of memory mapped
region.
+Node of a device using power domains must have a samsung,power-domain property
+defined with a phandle to respective power domain.
+
Example:
lcd0: power-domain-lcd0 {
compatible = "samsung,exynos4210-pd";
reg = <0x10023C00 0x10>;
};
+
+Example of the node using power domain:
+
+ node {
+ /* ... */
+ samsung,power-domain = <&lcd0>;
+ /* ... */
+ };