linux-kernel - Re: [PATCH 5/9] arm64: dts: rockchip: add rk3568 tsadc nodes

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Message-ID: <757c6db0-c259-32d8-53c1-c1e31e9cbe8c@gmail.com>
Date:   Wed, 28 Jul 2021 17:33:38 +0200
From:   Johan Jonker <jbx6244@...il.com>
To:     Peter Geis <pgwipeout@...il.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 5/9] arm64: dts: rockchip: add rk3568 tsadc nodes

Hi Peter,

On 7/28/21 3:55 PM, Peter Geis wrote:
> Add the thermal and tsadc nodes to the rk3568 device tree.
> There are two sensors, one for the cpu, one for the gpu.
> 
> Signed-off-by: Peter Geis <pgwipeout@...il.com>
> ---
>  .../boot/dts/rockchip/rk3568-pinctrl.dtsi     |  6 ++
>  arch/arm64/boot/dts/rockchip/rk356x.dtsi      | 71 +++++++++++++++++++
>  2 files changed, 77 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568-pinctrl.dtsi b/arch/arm64/boot/dts/rockchip/rk3568-pinctrl.dtsi
> index a588ca95ace2..b464c7bda1f7 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568-pinctrl.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3568-pinctrl.dtsi
> @@ -2420,6 +2420,12 @@ spi3m1_cs1: spi3m1-cs1 {
>  	};
>  
>  	tsadc {
> +		/omit-if-no-ref/

> +		tsadc_gpio: tsadc-gpio {

nodenames ending on -gpio -gpios are kind of reserved.
Maybe use -pin or -pins.

>From  dt-schema/schemas/gpio/gpio-consumer.yaml

patternProperties:
  "(?<!,nr)-gpios?$":
    $ref: "/schemas/types.yaml#/definitions/phandle-array"


> +			rockchip,pins =
> +				<0 RK_PA1 0 &pcfg_pull_none>;
> +		};
> +
>  		/omit-if-no-ref/
>  		tsadcm0_shut: tsadcm0-shut {
>  			rockchip,pins =
> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> index 77c679304916..0905fac0726a 100644
> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> @@ -51,6 +51,7 @@ cpu0: cpu@0 {
>  			compatible = "arm,cortex-a55";
>  			reg = <0x0 0x0>;
>  			clocks = <&scmi_clk 0>;
> +			#cooling-cells = <2>;
>  			enable-method = "psci";
>  			operating-points-v2 = <&cpu0_opp_table>;
>  		};
> @@ -59,6 +60,7 @@ cpu1: cpu@100 {
>  			device_type = "cpu";
>  			compatible = "arm,cortex-a55";
>  			reg = <0x0 0x100>;
> +			#cooling-cells = <2>;
>  			enable-method = "psci";
>  			operating-points-v2 = <&cpu0_opp_table>;
>  		};
> @@ -67,6 +69,7 @@ cpu2: cpu@200 {
>  			device_type = "cpu";
>  			compatible = "arm,cortex-a55";
>  			reg = <0x0 0x200>;
> +			#cooling-cells = <2>;
>  			enable-method = "psci";
>  			operating-points-v2 = <&cpu0_opp_table>;
>  		};
> @@ -75,6 +78,7 @@ cpu3: cpu@300 {
>  			device_type = "cpu";
>  			compatible = "arm,cortex-a55";
>  			reg = <0x0 0x300>;
> +			#cooling-cells = <2>;
>  			enable-method = "psci";
>  			operating-points-v2 = <&cpu0_opp_table>;
>  		};
> @@ -774,6 +778,73 @@ uart9: serial@...d0000 {
>  		status = "disabled";
>  	};
>  
> +	thermal_zones: thermal-zones {
> +		cpu_thermal: cpu-thermal {
> +			polling-delay-passive = <100>;
> +			polling-delay = <1000>;
> +
> +			thermal-sensors = <&tsadc 0>;
> +
> +			trips {
> +				cpu_alert0: cpu_alert0 {
> +					temperature = <70000>;
> +					hysteresis = <2000>;
> +					type = "passive";
> +				};
> +				cpu_alert1: cpu_alert1 {
> +					temperature = <75000>;
> +					hysteresis = <2000>;
> +					type = "passive";
> +				};
> +				cpu_crit: cpu_crit {
> +					temperature = <95000>;
> +					hysteresis = <2000>;
> +					type = "critical";
> +				};
> +			};
> +
> +			cooling-maps {
> +				map0 {
> +					trip = <&cpu_alert0>;
> +					cooling-device =
> +						<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> +						<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> +						<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
> +						<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> +				};
> +			};
> +		};
> +
> +		gpu_thermal: gpu-thermal {
> +			polling-delay-passive = <20>; /* milliseconds */
> +			polling-delay = <1000>; /* milliseconds */
> +
> +			thermal-sensors = <&tsadc 1>;
> +		};
> +	};
> +
> +	tsadc: tsadc@...10000 {
> +		compatible = "rockchip,rk3568-tsadc";
> +		reg = <0x0 0xfe710000 0x0 0x100>;
> +		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
> +		assigned-clocks = <&cru CLK_TSADC_TSEN>, <&cru CLK_TSADC>;
> +		assigned-clock-rates = <17000000>, <700000>;
> +		clocks = <&cru CLK_TSADC>, <&cru PCLK_TSADC>;
> +		clock-names = "tsadc", "apb_pclk";
> +		resets = <&cru SRST_TSADC>, <&cru SRST_P_TSADC>,
> +			 <&cru SRST_TSADCPHY>;
> +		reset-names = "tsadc", "tsadc-apb", "tsadc-phy";
> +		rockchip,grf = <&grf>;
> +		rockchip,hw-tshut-temp = <95000>;
> +		rockchip,hw-tshut-mode = <1>; /* tshut mode 0:CRU 1:GPIO */
> +		rockchip,hw-tshut-polarity = <0>; /* tshut polarity 0:LOW 1:HIGH */
> +		pinctrl-names = "gpio", "otpout";
> +		pinctrl-0 = <&tsadc_gpio>;
> +		pinctrl-1 = <&tsadc_shutorg>;
> +		#thermal-sensor-cells = <1>;
> +		status = "disabled";
> +	};
> +
>  	saradc: saradc@...20000 {
>  		compatible = "rockchip,rk3568-saradc", "rockchip,rk3399-saradc";
>  		reg = <0x0 0xfe720000 0x0 0x100>;
>