linux-kernel - Re: [PATCH V2 1/2] ARM: dts: imx7s: add temperature monitor support

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Date:   Mon, 5 Feb 2018 00:07:13 -0600
From:   Rob Herring <robh@...nel.org>
To:     Anson Huang <Anson.Huang@....com>
Cc:     rui.zhang@...el.com, edubezval@...il.com, mark.rutland@....com,
        shawnguo@...nel.org, kernel@...gutronix.de, fabio.estevam@....com,
        linux@...linux.org.uk, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, aisheng.dong@....com,
        Linux-imx@....com
Subject: Re: [PATCH V2 1/2] ARM: dts: imx7s: add temperature monitor support

On Fri, Jan 26, 2018 at 04:09:39PM +0800, Anson Huang wrote:
> Add i.MX7 temperature monitor support.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> Acked-by: Dong Aisheng <aisheng.dong@....com>
> ---
> no changes since V1.
>  .../devicetree/bindings/thermal/imx-thermal.txt      |  5 +++--
>  arch/arm/boot/dts/imx7s.dtsi                         | 20 ++++++++++++++++++++
>  2 files changed, 23 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/imx-thermal.txt b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> index 28be51a..9575d45 100644
> --- a/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/imx-thermal.txt
> @@ -1,8 +1,9 @@
>  * Temperature Monitor (TEMPMON) on Freescale i.MX SoCs
>  
>  Required properties:
> -- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX.
> -  i.MX6SX has two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,
> +- compatible : "fsl,imx6q-tempmon" for i.MX6Q, "fsl,imx6sx-tempmon" for i.MX6SX,
> +  "fsl,imx7-tempmon" for i.MX7S/D.

Please format as one valid compatible combination per line.

> +  i.MX6SX and i.MX7S/D have two more IRQs than i.MX6Q, one is IRQ_LOW and the other is IRQ_PANIC,

This belongs with the interrupt property.

>    when temperature is below than low threshold, IRQ_LOW will be triggered, when temperature
>    is higher than panic threshold, system will auto reboot by SRC module.
>  - fsl,tempmon : phandle pointer to system controller that contains TEMPMON
> diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi
> index 82ad26e..2e2eda53 100644
> --- a/arch/arm/boot/dts/imx7s.dtsi
> +++ b/arch/arm/boot/dts/imx7s.dtsi
> @@ -497,9 +497,29 @@
>  			};
>  
>  			ocotp: ocotp-ctrl@...50000 {
> +				#address-cells = <1>;
> +				#size-cells = <1>;
>  				compatible = "fsl,imx7d-ocotp", "syscon";
>  				reg = <0x30350000 0x10000>;
>  				clocks = <&clks IMX7D_OCOTP_CLK>;
> +
> +				tempmon_calib: calib@3c {
> +					reg = <0x3c 0x4>;
> +				};
> +
> +				tempmon_temp_grade: temp-grade@10 {
> +					reg = <0x10 0x4>;
> +				};
> +			};
> +
> +			tempmon: tempmon {
> +				compatible = "fsl,imx7-tempmon";
> +				interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
> +				fsl,tempmon =<&anatop>;
> +				nvmem-cells = <&tempmon_calib>,
> +					<&tempmon_temp_grade>;
> +				nvmem-cell-names = "calib", "temp_grade";
> +				clocks = <&clks IMX7D_PLL_SYS_MAIN_CLK>;
>  			};
>  
>  			anatop: anatop@...60000 {
> -- 
> 2.7.4
> 
> --
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