linux-kernel - Re: [PATCH v6 0/3] Add Qualcomm MPM irqchip driver support

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Date:   Wed, 4 May 2022 20:21:59 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     Shawn Guo <shawn.guo@...aro.org>, Marc Zyngier <maz@...nel.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Valentin Schneider <valentin.schneider@....com>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Maulik Shah <quic_mkshah@...cinc.com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v6 0/3] Add Qualcomm MPM irqchip driver support

On Wed, May 04, 2022 at 04:08:58PM +0200, Ulf Hansson wrote:
> On Wed, 23 Feb 2022 at 13:57, Shawn Guo <shawn.guo@...aro.org> wrote:
> >
> > It starts from updating cpu_pm to support CPU_LAST_PM_ENTER (and
> > CPU_FIRST_PM_EXIT) event, and then adds DT binding and driver support
> > for Qualcomm MPM (MSM Power Manager) interrupt controller.
> >
> > Changes for v6:
> > - Add new event CPU_LAST_PM_ENTER (and CPU_FIRST_PM_EXIT) in cpu_pm
> > - Drop vendor driver notes from commit log
> > - Check NULL mpm_gic_map instead to save the use of MPM_NO_PARENT_IRQ
> > - Add lock protection for register read in qcom_mpm_handler()
> > - Return IRQ_NONE if there is no pending interrupt
> > - Drop IRQF_TRIGGER_RISING flag from devm_request_irq() call since it's
> >   being specified in DT
> > - Drop dev_set_drvdata() call which is a leftover from previous version
> > - Fix dt_binding_check errors reported by upgraded dtschema
> 
> My apologies for the late reply to this series. FYI, I fully agree
> with the responses from Sudeep, etc, that have been made on this
> series.
> 
> The proper thing is to use genpd on/off notifiers, which should get
> fired if you model the PM domain topology correctly in DT - and use
> PSCI OSI.
> 
> That said, please keep me posted when/if you submit a new version for
> this. I will make sure to pay more attention next time.
> 

[1] is the latest I believe. It now implements power domain as I requested and
I was happy with that version.

-- 
Regards,
Sudeep

[1] https://lore.kernel.org/lkml/20220308080534.3384532-1-shawn.guo@linaro.org