linux-kernel - Re: [PATCH 3/3] thermal: broadcom: Add Stingray thermal driver

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Date:   Mon, 29 Apr 2019 20:58:26 +0530
From:   Srinath Mannam <srinath.mannam@...adcom.com>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     David Woodhouse <dwmw2@...radead.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        BCM Kernel Feedback <bcm-kernel-feedback-list@...adcom.com>,
        Pramod Kumar <pramod.kumar@...adcom.com>
Subject: Re: [PATCH 3/3] thermal: broadcom: Add Stingray thermal driver

Hi David,

Thank you for notifying..

Hi Sudeep,

I will send a patch to remove ACPI support.

Regards,
Srinath.

On Mon, Apr 29, 2019 at 8:54 PM Sudeep Holla <sudeep.holla@....com> wrote:
>
> On Mon, Apr 29, 2019 at 06:07:12PM +0300, David Woodhouse wrote:
> > On Mon, 2018-05-28 at 11:11 +0530, Srinath Mannam wrote:
> > > From: Pramod Kumar <pramod.kumar@...adcom.com>
> > >
> > > This commit adds stingray thermal driver to monitor six
> > > thermal zones temperature and trips at critical temperature.
> >
> > This matches an ACPI "BRCM0500" device but then calls
> > devm_thermal_zone_of_sensor_register(), which AFAICT is going to fail
> > on an ACPI system because the first thing that does is call
> > of_find_node_by_name(NULL, "thermal-zones") which isn't going to find a
> > match.
> >
>
> Thanks David for bringing this up. I hadn't noticed that this driver is
> cheekily trying to do thermal management in ACPI using crafty
> acpi_device_id match. ACPI thermal objects/methods must be used in the
> firmware to do thermal management.
>
> Pramod, can you remove the ACPI support or I can go ahead and post the
> patch to do the same ?
>
> > How does this work in the ACPI case?
>
> It can't and shouldn't work if one can make it happen :)
>
> --
> Regards,
> Sudeep