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authorMarek Szyprowski <m.szyprowski@samsung.com>2015-02-04 23:44:15 +0900
committerKukjin Kim <kgene@kernel.org>2015-02-27 05:26:57 +0900
commit0f7807518fe172353622700123615ae19701e693 (patch)
tree30e319a6047556d6a18cede62e71fb76cc26abb5 /Documentation/devicetree
parentdbe675433df3966cb4d24e80670a3134ab8757ee (diff)
downloadlinux-0f7807518fe172353622700123615ae19701e693.tar.bz2
ARM: EXYNOS: add support for sub-power domains
This patch adds support for making one power domain a sub-domain of other domain. This is useful for modeling power dependences for devices like TV Mixer or Camera ISP, which needs to have more than one power domain enabled to be operational. Based on previous work by Amit Daniel Kachhap <amit.daniel@samsung.com>. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Kukjin Kim <kgene@kernel.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/arm/exynos/power_domain.txt2
1 files changed, 2 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
index f4445e5a2bbb..1e097037349c 100644
--- a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
+++ b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt
@@ -22,6 +22,8 @@ Optional Properties:
- pclkN, clkN: Pairs of parent of input clock and input clock to the
devices in this power domain. Maximum of 4 pairs (N = 0 to 3)
are supported currently.
+- power-domains: phandle pointing to the parent power domain, for more details
+ see Documentation/devicetree/bindings/power/power_domain.txt
Node of a device using power domains must have a power-domains property
defined with a phandle to respective power domain.