diff options
| author | Tomasz Figa <t.figa@samsung.com> | 2012-11-22 00:21:17 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-11-22 00:38:59 +0900 |
| commit | 8a65d2365df0635da13ae30c01e217c477c9ce3e (patch) | |
| tree | a87b1bc99d4f4af42de72e91e1caf2d5bf4ce271 /Documentation/devicetree/bindings/arm | |
| parent | 7add0ec0fef19d5b7a3ae38c5deb80819a065a17 (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.txt | 13 |
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>; + /* ... */ + }; |