From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Sneh Mankad <sneh.mankad@oss.qualcomm.com>,
Bjorn Andersson <andersson@kernel.org>,
Konrad Dybcio <konradybcio@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Thomas Gleixner <tglx@kernel.org>,
Shawn Guo <shawn.guo@linaro.org>, Marc Zyngier <maz@kernel.org>
Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/7] irqchip/irq-qcom-mpm: Register MPM under CPU cluster power domain
Date: Wed, 15 Jul 2026 11:46:58 +0200 [thread overview]
Message-ID: <7c8178ec-8bab-4427-8faa-5b28cb76a5ad@oss.qualcomm.com> (raw)
In-Reply-To: <20260713-b4-shikra_lpm_addition-v1-2-3d858df2cbbf@oss.qualcomm.com>
On 7/13/26 12:25 PM, Sneh Mankad wrote:
> MPM irqchip needs to notify RPM (Resource Power Manager) processor to read
> the latest wake up capable interrupts when the CPU cluster is entering the
> deepest idle state. This is done by sending IPC interrupt to RPM and is
> implemented as .power_off() callback by registering MPM as parent power
> domain to CPU cluster.
[...]
> If MPM has not registered with CPU cluster power domain, utilize the CPU PM
> notifications to manage RPM communication when the last CPU goes to power
> collapse.
I have mixed feelings about this case. The RPMH RSC driver keeps that as a
fallback for platforms which don't have PSCI OSI mode specifically.
On the other hand, there are platforms (early arm64 - pre-msm8996 and almost
all of the arm32 platforms) that don't define any CPU power domains, so
perhaps it's necessary after all..
Konrad
next prev parent reply other threads:[~2026-07-15 9:47 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-13 10:25 [PATCH 0/7] Register MPM under CPU cluster power domain to manage RPM notification Sneh Mankad
2026-07-13 10:25 ` [PATCH 1/7] dt-bindings: interrupt-controller: mpm: Document power-domains property Sneh Mankad
2026-07-13 11:26 ` Konrad Dybcio
2026-08-03 5:28 ` Sneh Mankad
2026-07-13 15:11 ` Marc Zyngier
[not found] ` <CGME20260715063901eucas1p2a4c2d72e4d9dbd9fd2f1e686d1a6c89c@eucas1p2.samsung.com>
2026-07-15 6:38 ` Marek Szyprowski
2026-07-15 8:54 ` Marc Zyngier
2026-08-03 10:28 ` Sneh Mankad
2026-08-03 19:21 ` Dmitry Baryshkov
2026-07-21 9:06 ` Krzysztof Kozlowski
2026-08-03 5:30 ` Sneh Mankad
2026-08-03 19:21 ` Dmitry Baryshkov
2026-07-13 10:25 ` [PATCH 2/7] irqchip/irq-qcom-mpm: Register MPM under CPU cluster power domain Sneh Mankad
2026-07-15 9:46 ` Konrad Dybcio [this message]
2026-07-15 10:34 ` Stephan Gerhold
2026-07-15 10:45 ` Konrad Dybcio
2026-07-15 10:49 ` Stephan Gerhold
2026-07-15 11:11 ` Konrad Dybcio
2026-07-21 22:18 ` Dmitry Baryshkov
2026-07-22 8:29 ` Konrad Dybcio
2026-08-03 10:58 ` Sneh Mankad
2026-08-19 13:49 ` Konrad Dybcio
2026-07-13 10:25 ` [PATCH 3/7] irqchip/irq-qcom-mpm: Prepare common access path for timer and pin regs Sneh Mankad
2026-07-15 9:59 ` Konrad Dybcio
2026-07-13 10:25 ` [PATCH 4/7] irqchip/irq-qcom-mpm: Program wakeup timer when CPU cluster goes to LPM Sneh Mankad
2026-07-13 15:18 ` Marc Zyngier
2026-08-03 11:03 ` Sneh Mankad
2026-07-13 10:25 ` [PATCH 5/7] arm64: dts: qcom: sm6375: Make MPM device as part of CPU cluster domain Sneh Mankad
2026-07-13 10:25 ` [PATCH 6/7] arm64: dts: qcom: agatti: Do not mark MPM as power domain Sneh Mankad
2026-07-15 10:01 ` Konrad Dybcio
2026-07-21 22:22 ` Dmitry Baryshkov
2026-07-22 8:28 ` Konrad Dybcio
2026-07-22 12:40 ` Dmitry Baryshkov
2026-08-03 10:37 ` Sneh Mankad
2026-07-21 22:21 ` Dmitry Baryshkov
2026-07-13 10:25 ` [PATCH 7/7] arm64: dts: qcom: shikra: Add CPU idle states Sneh Mankad
2026-07-15 10:02 ` Konrad Dybcio
2026-08-03 10:33 ` Sneh Mankad
2026-08-19 13:46 ` Konrad Dybcio
2026-09-11 8:33 ` [PATCH 0/7] Register MPM under CPU cluster power domain to manage RPM notification Christopher Obbard
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7c8178ec-8bab-4427-8faa-5b28cb76a5ad@oss.qualcomm.com \
--to=konrad.dybcio@oss.qualcomm.com \
--cc=andersson@kernel.org \
--cc=conor+dt@kernel.org \
--cc=devicetree@vger.kernel.org \
--cc=konradybcio@kernel.org \
--cc=krzk+dt@kernel.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maz@kernel.org \
--cc=robh@kernel.org \
--cc=shawn.guo@linaro.org \
--cc=sneh.mankad@oss.qualcomm.com \
--cc=tglx@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®