From: Shawn Guo <shawn.guo@linaro.org>
To: Maulik Shah <quic_mkshah@quicinc.com>
Cc: Marc Zyngier <maz@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Rob Herring <robh+dt@kernel.org>,
Loic Poulain <loic.poulain@linaro.org>,
devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 2/2] irqchip: Add Qualcomm MPM controller driver
Date: Tue, 30 Nov 2021 16:44:46 +0800 [thread overview]
Message-ID: <20211130084445.GG10105@dragon> (raw)
In-Reply-To: <519ac97a-6bff-ee93-58c6-63559c3a6cb6@quicinc.com>
On Tue, Nov 30, 2021 at 01:56:02PM +0530, Maulik Shah wrote:
> Hi,
>
> On 11/29/2021 7:15 PM, Shawn Guo wrote:
> > > This is not limited to suspend, you will need to notify RPM during deepest
> > > cpu idle state entry as well, since MPM may be monitoring interrupts in that
> > > case too.
> > Yeah, I was trying to test this MPM driver with cpuidle, but failed to
> > see the SoC get into vlow/vmin state from cpuidle.
>
> In a few cases SoC can enter vmin/vlow from cpuidle one is from static
> screen on.
>
> > Do you have any
> > suggestion how I should test it properly?
> Suspend resume (use "s2idle" and not "deep" mode on upstream kernel) is one
> good method, but you will have to make sure all drivers have removed votes
> on xo clock when entering suspend.
> Also need to make sure other subsystem like modem is in power collaspe (look
> at the internal master stats driver to know if other subsystems entering to
> low power mode or not).
I have already been able to trigger a vmin sleep with s2idle by doing:
$ echo mem > /sys/power/state
My question is how I can get a vmin sleep in idle case, so that MPM
driver can be tested in both suspend and idle context.
Shawn
next prev parent reply other threads:[~2021-11-30 8:44 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-26 9:35 [PATCH v2 0/2] Add Qualcomm MPM irqchip driver support Shawn Guo
2021-11-26 9:35 ` [PATCH v2 1/2] dt-bindings: interrupt-controller: Add Qualcomm MPM support Shawn Guo
2021-12-01 23:02 ` Rob Herring
2021-11-26 9:35 ` [PATCH v2 2/2] irqchip: Add Qualcomm MPM controller driver Shawn Guo
2021-11-26 15:13 ` Marc Zyngier
2021-11-26 19:19 ` Marc Zyngier
2021-11-29 13:33 ` Shawn Guo
2021-11-29 15:24 ` Marc Zyngier
2021-11-30 2:31 ` Shawn Guo
2021-11-30 8:42 ` Marc Zyngier
2021-11-30 9:17 ` Shawn Guo
2021-11-30 10:44 ` Marc Zyngier
2021-12-01 7:36 ` Shawn Guo
[not found] ` <2e821841-a921-3fda-9ee6-3d5127653033@quicinc.com>
2021-11-30 8:31 ` Shawn Guo
2021-11-30 8:52 ` Marc Zyngier
2021-11-30 8:54 ` Maulik Shah
2021-11-30 8:47 ` Marc Zyngier
2021-11-27 7:49 ` kernel test robot
2021-11-29 7:23 ` Maulik Shah
2021-11-29 13:45 ` Shawn Guo
2021-11-30 8:26 ` Maulik Shah
2021-11-30 8:44 ` Shawn Guo [this message]
2021-11-30 9:04 ` Maulik Shah
2021-11-30 9:26 ` Shawn Guo
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