linux-kernel - Re: [PATCH v3,1/8] arm64: dts: mt8183: add thermal zone node

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Message-ID: <1582682289.27539.5.camel@mtksdccf07>
Date:   Wed, 26 Feb 2020 09:58:09 +0800
From:   Michael Kao <michael.kao@...iatek.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
CC:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>, <hsinyi@...omium.org>,
        <linux-pm@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <devicetree@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v3,1/8] arm64: dts: mt8183: add thermal zone node

On Thu, 2020-02-20 at 21:57 +0100, Matthias Brugger wrote:
> 
> On 20/02/2020 12:52, Daniel Lezcano wrote:
> > On 11/02/2020 04:17, Michael Kao wrote:
> >> On Thu, 2020-01-09 at 12:31 +0100, Daniel Lezcano wrote:
> >>> On 03/01/2020 07:44, Michael Kao wrote:
> >>>> From: "michael.kao" <michael.kao@...iatek.com>
> >>>>
> >>>> Add thermal zone node to Mediatek MT8183 dts file.
> >>>>
> >>>> Signed-off-by: Michael Kao <michael.kao@...iatek.com>
> >>>> ---
> >>>>  arch/arm64/boot/dts/mediatek/mt8183.dtsi | 85 ++++++++++++++++++++++++
> >>>>  1 file changed, 85 insertions(+)
> >>>>
> >>>> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> >>>> index 10b32471bc7b..a2793cf3d994 100644
> >>>> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> >>>> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> >>>> @@ -570,6 +570,88 @@
> >>>>  			status = "disabled";
> >>>>  		};
> >>>>  
> >>>> +		thermal: thermal@...0b000 {
> >>>> +			#thermal-sensor-cells = <1>;
> >>>> +			compatible = "mediatek,mt8183-thermal";
> >>>> +			reg = <0 0x1100b000 0 0x1000>;
> >>>> +			interrupts = <0 76 IRQ_TYPE_LEVEL_LOW>;
> >>>
> >>> What is this interrupt for?
> >>
> >> The interrupts pin is designed in our SoC. But it is not used in our
> >> upstream thermal code now. There is also add the settings but not use
> >> for mt8173.dtsi. To align the thermal dtsi format, I follow the past
> >> experience to add the interrupt settings of this project first.
> > 
> > Assuming the interrupt can be set by the driver to fire when a specified
> > temperature is set, I suggest to change your driver to handle it so you
> > can get rid of the polling waking up the SoC every second.
> > 
> 
> For the record the interrupt is a required property by the binding description.
> 
> Regards,
> Matthias

After checking with interrupt owner, it is not required property for
thermal.
I will remove the property of hw-reset-temp and interrupt.
And also I will add new line to fix format.
These three change will resend v4 to fix them.