From: Kevin Hilman <khilman@baylibre.com>
To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"Len Brown" <len.brown@intel.com>, "Pavel Machek" <pavel@ucw.cz>,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Lina Iyer" <lina.iyer@linaro.org>,
"Axel Haslam" <ahaslam@baylibre.com>,
"Marek Szyprowski" <m.szyprowski@samsung.com>,
"Jon Hunter" <jonathanh@nvidia.com>,
"Andy Gross" <andy.gross@linaro.org>,
"Laurent Pinchart" <laurent.pinchart@ideasonboard.com>,
"David Airlie" <airlied@linux.ie>,
"Alex Deucher" <alexander.deucher@amd.com>,
"Maruthi Srinivas Bayyavarapu" <Maruthi.Bayyavarapu@amd.com>,
dri-devel <dri-devel@lists.freedesktop.org>,
"Christian König" <christian.koenig@amd.com>
Subject: Re: [PATCH v2 1/2] PM / Domains: Allow genpd to power on during the system PM phase
Date: Fri, 13 May 2016 11:54:49 +0200 [thread overview]
Message-ID: <m21t56705y.fsf@baylibre.com> (raw)
In-Reply-To: <CAPDyKFpUoKLVdCuF+heNeqHB0sQmnLUuBY1fmk2hHwt7FsbvkA@mail.gmail.com> (Ulf Hansson's message of "Thu, 12 May 2016 15:13:07 +0200")
Ulf Hansson <ulf.hansson@linaro.org> writes:
> On 11 May 2016 at 23:25, Rafael J. Wysocki <rafael@kernel.org> wrote:
>> On Wed, May 11, 2016 at 10:00 AM, Ulf Hansson <ulf.hansson@linaro.org> wrote:
>>> If the PM domain is powered off when the first device in the domain starts
>>> its system PM prepare phase, genpd prevents any further attempts to power
>>> on the PM domain during the system PM phase. This constraint affects not
>>> only the current device which is being prepared, but all devices within
>>> the same PM domain.
>>
>> What exactly do you mean by "the system PM phase"?
>
> In between system PM device prepare and system PM device complete.
>
> Do you want me to clarify this in a better way in the change log?
It might be more clear if you something like "during system suspend/resume"
Kevin
next prev parent reply other threads:[~2016-05-13 9:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-11 8:00 [PATCH v2 0/2] PM / Domains: Second step in improving system PM code in genpd Ulf Hansson
2016-05-11 8:00 ` [PATCH v2 1/2] PM / Domains: Allow genpd to power on during the system PM phase Ulf Hansson
2016-05-11 21:25 ` Rafael J. Wysocki
2016-05-12 13:13 ` Ulf Hansson
2016-05-13 9:54 ` Kevin Hilman [this message]
2016-05-11 8:00 ` [PATCH v2 2/2] PM / Domains: Remove redundant wrapper functions for system PM Ulf Hansson
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