| Message ID | 1475879821-8035-9-git-send-email-lina.iyer@linaro.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On 8 October 2016 at 00:37, Lina Iyer <lina.iyer@linaro.org> wrote: > Update documentation to reflect the changes made to support IRQ safe PM > domains. > > Signed-off-by: Lina Iyer <lina.iyer@linaro.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Kind regards Uffe > --- > 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 >
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,
Update documentation to reflect the changes made to support IRQ safe PM domains. Signed-off-by: Lina Iyer <lina.iyer@linaro.org> --- Documentation/power/devices.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)