On 13 January 2015 at 11:53, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> wrote: > Hello, > > > On 2015-01-13 11:44, Ulf Hansson wrote: >> >> On 13 January 2015 at 10:39, Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> >> wrote: >>> >>> 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@xxxxxxxxxxx>. >>> >>> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> >>> --- >>> .../bindings/arm/exynos/power_domain.txt | 2 ++ >>> arch/arm/mach-exynos/pm_domains.c | 28 >>> ++++++++++++++++++++++ >>> 2 files changed, 30 insertions(+) >>> >>> diff --git >>> a/Documentation/devicetree/bindings/arm/exynos/power_domain.txt >>> b/Documentation/devicetree/bindings/arm/exynos/power_domain.txt >>> index f4445e5..28918a9 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: generic power domain binding pointing to a master power >>> domain >>> + that the given domain is a part of >> >> I would prefer this to be documented as a generic way to configure >> power domain parents, in >> Documentation/devicetree/bindings/power/power_domain.txt. > > > Well, right now it is a specific feature of exynos power domains, however if > you > want I can add a note in > Documentation/devicetree/bindings/power/power_domain.txt > on defining child-parent relation. However it will be still up to the power > domain > providers to implement support for it. We don't want one solution per provider to describe child-parent relations of PM domains in DT, that why I think it's important that we document this in Documentation/devicetree/bindings/power/power_domain.txt Kind regards Uffe -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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