From mboxrd@z Thu Jan 1 00:00:00 1970 From: lina.iyer@linaro.org (Lina Iyer) Date: Fri, 21 Oct 2016 09:23:13 -0600 Subject: [PATCH v3 8/8] PM / doc: Update device documentation for devices in IRQ safe PM domains In-Reply-To: References: <1476467276-75094-1-git-send-email-lina.iyer@linaro.org> <1476467276-75094-9-git-send-email-lina.iyer@linaro.org> Message-ID: <20161021152313.GC72940@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Oct 21 2016 at 07:07 -0600, Rafael J. Wysocki wrote: >On Fri, Oct 14, 2016 at 7:47 PM, Lina Iyer wrote: >> Update documentation to reflect the changes made to support IRQ safe PM >> domains. >> >> Signed-off-by: Lina Iyer >> Acked-by: Ulf Hansson >> --- >> 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. > >I would put this paragraph below, before the last paragraph in the section. > OK. >Also I suppose that a domain should only be defined as "IRQ-safe" if >all of the devices in it are "IRQ-safe" (or there will be problems at >least in principle). If that is the case, it should be stated clearly >in the paragraph you are adding as well. > Will add. Thanks, Lina