Update documentation to reflect the changes made to support IRQ safe PM domains. Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx> Acked-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx> --- Documentation/power/devices.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt index 8ba6625..0401b53 100644 --- a/Documentation/power/devices.txt +++ b/Documentation/power/devices.txt @@ -607,7 +607,14 @@ individually. Instead, a set of devices sharing a power resource can be put into a low-power state together at the same time by turning off the shared power resource. Of course, they also need to be put into the full-power state together, by turning the shared power resource on. A set of devices with this -property is often referred to as a power domain. +property is often referred to as a power domain. A power domain may also be +nested inside another power domain. + +Devices and PM domains may be defined as IRQ-safe, if they can be powered +on/off even when the IRQs are disabled. An IRQ-safe device in a domain will +disallow power management on the domain, unless the domain is also defined as +IRQ-safe. The restriction this framework imposes on the parent domain of an +IRQ-safe domain is that it must also be defined as IRQ-safe. Support for power domains is provided through the pm_domain field of struct device. This field is a pointer to an object of type struct dev_pm_domain, -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
