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Date:   Fri, 3 May 2019 16:03:58 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     "michael.kao" <michael.kao@...iatek.com>
Cc:     fan.chen@...iatek.com, jamesjj.liao@...iatek.com,
        dawei.chien@...iatek.com, louis.yu@...iatek.com,
        roger.lu@...iatek.com, Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        devicetree@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-pm@...r.kernel.org
Subject: Re: [PATCH 1/8] arm64: dts: mt8183: add thermal zone node

On Thu, May 2, 2019 at 10:43 AM michael.kao <michael.kao@...iatek.com> wrote:
>
> 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 | 64 ++++++++++++++++++++++++++++++++
>  1 file changed, 64 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> index 926df75..b92116f 100644
> --- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> +++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
> @@ -334,6 +334,67 @@
>                         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>;
> +                       clocks = <&infracfg CLK_INFRA_THERM>,
> +                                <&infracfg CLK_INFRA_AUXADC>;
> +                       clock-names = "therm", "auxadc";
> +                       resets = <&infracfg  MT8183_INFRACFG_AO_THERM_SW_RST>;
> +                       mediatek,auxadc = <&auxadc>;
> +                       mediatek,apmixedsys = <&apmixedsys>;
> +                       mediatek,hw-reset-temp = <117000>;
> +                       nvmem-cells = <&thermal_calibration>;
> +                       nvmem-cell-names = "calibration-data";
> +               };
> +
> +               thermal-zones {
> +                       cpu_thermal: cpu_thermal {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +
> +                               thermal-sensors = <&thermal 0>;
> +                               sustainable-power = <1500>;
> +                       };
> +
> +                       tzts1: tzts1 {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 1>;
Is sustainable-power required for tzts? Though it's an optional
property, kernel would have warning:
[    0.631556] thermal thermal_zone1: power_allocator:
sustainable_power will be estimated
[    0.639586] thermal thermal_zone2: power_allocator:
sustainable_power will be estimated
[    0.647611] thermal thermal_zone3: power_allocator:
sustainable_power will be estimated
[    0.655635] thermal thermal_zone4: power_allocator:
sustainable_power will be estimated
[    0.663658] thermal thermal_zone5: power_allocator:
sustainable_power will be estimated
if no sustainable-power assigned.

> +                       };
> +
> +                       tzts2: tzts2 {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 2>;
> +                       };
> +
> +                       tzts3: tzts3 {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 3>;
> +                       };
> +
> +                       tzts4: tzts4 {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 4>;
> +                       };
> +
> +                       tzts5: tzts5 {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 5>;
> +                       };
> +
> +                       tztsABB: tztsABB {
> +                               polling-delay-passive = <1000>;
> +                               polling-delay = <1000>;
> +                               thermal-sensors = <&thermal 6>;
> +                       };
> +               };
>                 audiosys: syscon@...20000 {
>                         compatible = "mediatek,mt8183-audiosys", "syscon";
>                         reg = <0 0x11220000 0 0x1000>;
> @@ -368,6 +429,9 @@
>                         compatible = "mediatek,mt8183-efuse",
>                                      "mediatek,efuse";
>                         reg = <0 0x11f10000 0 0x1000>;
> +                       thermal_calibration: calib@180 {
> +                               reg = <0x180 0xc>;
> +                       };
>                 };
>
>                 mfgcfg: syscon@...00000 {

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