From: Rob Herring <robh@kernel.org>
To: Amit Kucheria <amit.kucheria@linaro.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
Bjorn Andersson <bjorn.andersson@linaro.org>,
Eduardo Valentin <edubezval@gmail.com>,
Andy Gross <andy.gross@linaro.org>,
Andy Gross <agross@kernel.org>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Mark Rutland <mark.rutland@arm.com>,
Zhang Rui <rui.zhang@intel.com>,
Linux PM list <linux-pm@vger.kernel.org>,
DTML <devicetree@vger.kernel.org>
Subject: Re: [PATCH 07/15] dt: thermal: tsens: Document interrupt support in tsens driver
Date: Mon, 19 Aug 2019 08:07:58 -0500 [thread overview]
Message-ID: <CAL_JsqL9LXH3qcCc_J-aL3CxO8xyOFEjmYgxPo_Fp+3GQ=tsew@mail.gmail.com> (raw)
In-Reply-To: <CAHLCerN6uOijzj4skWSRhNr+dSPZ6ysXV5AQjuY9tpa7ndbMUw@mail.gmail.com>
On Mon, Aug 19, 2019 at 2:10 AM Amit Kucheria <amit.kucheria@linaro.org> wrote:
>
> On Sun, Aug 18, 2019 at 12:55 AM Rob Herring <robh@kernel.org> wrote:
> >
> > On Fri, Aug 16, 2019 at 5:02 PM Amit Kucheria <amit.kucheria@linaro.org> wrote:
> > >
> > > On Sat, Aug 17, 2019 at 3:06 AM Rob Herring <robh@kernel.org> wrote:
> > > >
> > > > On Fri, Jul 26, 2019 at 03:48:42AM +0530, Amit Kucheria wrote:
> > > > > Define two new required properties to define interrupts and
> > > > > interrupt-names for tsens.
> > > > >
> > > > > Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
> > > > > ---
> > > > > Documentation/devicetree/bindings/thermal/qcom-tsens.txt | 5 +++++
> > > > > 1 file changed, 5 insertions(+)
> > > > >
> > > > > diff --git a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> > > > > index 673cc1831ee9..3d3dd5dc6d36 100644
> > > > > --- a/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> > > > > +++ b/Documentation/devicetree/bindings/thermal/qcom-tsens.txt
> > > > > @@ -22,6 +22,8 @@ Required properties:
> > > > >
> > > > > - #thermal-sensor-cells : Should be 1. See ./thermal.txt for a description.
> > > > > - #qcom,sensors: Number of sensors in tsens block
> > > > > +- interrupts: Interrupts generated from Always-On subsystem (AOSS)
> > > > > +- interrupt-names: The name of the interrupt e.g. "tsens0", "tsens1"
> > > >
> > > > How many interrupts? A name with just indices isn't too useful.
> > >
> > > Depending on the version of the tsens IP, there can be 1 (upper/lower
> > > threshold), 2 (upper/lower + critical threshold) or 3 (upper/lower +
> > > critical + zero degree) interrupts. This patch series only introduces
> > > support for a single interrupt (upper/lower).
> >
> > I would expect a different compatible for each possibility.
>
> We're currently using the 'qcom,tsens-v1' and 'qcom,tsens-v2'
> compatibles to broadly capture the feature (and register map)
> differences.
>
> By defining the following, I should be able to check at runtime (using
> platform_get_irq_by_name() as suggested) if a particular interrupt
> type is available on the platform, no? So do we really require three
> different compatibles?
Yes and no. I would assume the SoC specific compatibles would meet
this, but the driver can ignore that and just use
platform_get_irq_by_name() or count the number of interrupts.
> interrupt-names = "uplow", "crit", "cold"
>
> [1] Respin of older SoC with a newer version of IP
>
> > > I used the names tsens0, tsens1 to encapsulate the controller instance
> > > since some SoCs have 1 controller, others have two. So we'll end up
> > > with something like the following in DT:
> >
> > That's not really how *-names is supposed to work. The name is for
> > identifying what is at each index. Or to put it another way, a driver
> > should be able to use platform_get_irq_by_name(). So 'critical',
> > 'zero' and something for the first one.
>
> Fair point. I'll rework it to use "uplow", "crit" and "cold" or
> something to the effect.
>
> Is there another way I get the controller instance index in the name
> in /proc/interrupts?
Not sure offhand. Add the dev_name() into the IRQ name perhaps.
Rob
next prev parent reply other threads:[~2019-08-19 13:08 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-25 22:18 [PATCH 00/15] thermal: qcom: tsens: Add interrupt support Amit Kucheria
2019-07-25 22:18 ` [PATCH 01/15] drivers: thermal: tsens: Get rid of id field in tsens_sensor Amit Kucheria
2019-08-17 4:01 ` Stephen Boyd
2019-08-19 11:55 ` Daniel Lezcano
2019-07-25 22:18 ` [PATCH 02/15] drivers: thermal: tsens: Simplify code flow in tsens_probe Amit Kucheria
2019-08-17 4:02 ` Stephen Boyd
2019-08-19 11:57 ` Daniel Lezcano
2019-07-25 22:18 ` [PATCH 03/15] drivers: thermal: tsens: Add __func__ identifier to debug statements Amit Kucheria
2019-08-17 4:03 ` Stephen Boyd
2019-08-19 13:19 ` Daniel Lezcano
2019-07-25 22:18 ` [PATCH 04/15] drivers: thermal: tsens: Add debugfs support Amit Kucheria
2019-08-17 4:07 ` Stephen Boyd
2019-08-19 7:58 ` Amit Kucheria
2019-08-19 14:27 ` Stephen Boyd
2019-08-21 12:55 ` Amit Kucheria
2019-08-26 20:55 ` Stephen Boyd
2019-07-25 22:18 ` [PATCH 05/15] arm: dts: msm8974: thermal: Add thermal zones for each sensor Amit Kucheria
2019-08-08 20:49 ` Brian Masney
2019-07-25 22:18 ` [PATCH 06/15] arm64: dts: msm8916: thermal: Fixup HW ids for cpu sensors Amit Kucheria
2019-08-13 13:25 ` Daniel Lezcano
2019-07-25 22:18 ` [PATCH 07/15] dt: thermal: tsens: Document interrupt support in tsens driver Amit Kucheria
2019-08-16 21:36 ` Rob Herring
2019-08-16 22:02 ` Amit Kucheria
2019-08-17 4:10 ` Stephen Boyd
2019-08-17 19:25 ` Rob Herring
2019-08-19 7:10 ` Amit Kucheria
2019-08-19 13:07 ` Rob Herring [this message]
2019-07-25 22:18 ` [PATCH 08/15] arm64: dts: sdm845: thermal: Add interrupt support Amit Kucheria
2019-07-25 22:18 ` [PATCH 09/15] arm64: dts: msm8996: " Amit Kucheria
2019-07-25 22:18 ` [PATCH 10/15] arm64: dts: msm8998: " Amit Kucheria
2019-07-25 22:18 ` [PATCH 11/15] arm64: dts: qcs404: " Amit Kucheria
2019-07-25 22:18 ` [PATCH 12/15] arm64: dts: msm8974: " Amit Kucheria
2019-07-29 9:03 ` Luca Weiss
2019-07-29 9:29 ` Amit Kucheria
2019-08-08 20:49 ` Brian Masney
2019-07-25 22:18 ` [PATCH 13/15] arm64: dts: msm8916: " Amit Kucheria
2019-07-25 22:18 ` [PATCH 14/15] drivers: thermal: tsens: Create function to return sign-extended temperature Amit Kucheria
2019-08-17 4:16 ` Stephen Boyd
2019-08-19 20:51 ` Amit Kucheria
2019-07-25 22:18 ` [PATCH 15/15] drivers: thermal: tsens: Add interrupt support Amit Kucheria
2019-08-17 6:09 ` Stephen Boyd
2019-08-22 13:40 ` Amit Kucheria
2019-07-26 10:36 ` [PATCH 00/15] thermal: qcom: " Brian Masney
2019-07-26 11:10 ` Amit Kucheria
2019-07-26 11:29 ` Brian Masney
2019-07-27 7:28 ` Amit Kucheria
2019-07-29 9:07 ` Brian Masney
2019-07-29 9:32 ` Luca Weiss
2019-07-29 9:50 ` Amit Kucheria
2019-08-12 15:28 ` Niklas Cassel
2019-08-08 13:04 ` Amit Kucheria
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