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From:   Oleksij Rempel <o.rempel@pengutronix.de>
To:     Mark Rutland <mark.rutland@arm.com>,
        Rob Herring <robh+dt@kernel.org>,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>,
        Thierry Reding <thierry.reding@gmail.com>,
        Sam Ravnborg <sam@ravnborg.org>,
        David Airlie <airlied@linux.ie>,
        Daniel Vetter <daniel@ffwll.ch>
Cc:     Oleksij Rempel <o.rempel@pengutronix.de>,
        devicetree@vger.kernel.org, Fabio Estevam <festevam@gmail.com>,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        NXP Linux Team <linux-imx@nxp.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        David Jander <david@protonic.nl>,
        Robin van der Gracht <robin@protonic.nl>,
        dri-devel@lists.freedesktop.org
Subject: [PATCH v3 5/5] ARM: dts: imx6dl: plym2m, prtvt7, victgo: add thermal zones and hwmon
Date:   Fri, 11 Feb 2022 14:30:35 +0100
Message-Id: <20220211133035.2321330-6-o.rempel@pengutronix.de>
In-Reply-To: <20220211133035.2321330-1-o.rempel@pengutronix.de>
References: <20220211133035.2321330-1-o.rempel@pengutronix.de>
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Add thermal zones and hwmon connected to the ADC-touchscreen controller.

Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
---
 arch/arm/boot/dts/imx6dl-plym2m.dts | 74 ++++++++++++++++++++++++++++-
 arch/arm/boot/dts/imx6dl-prtvt7.dts | 57 ++++++++++++++++++++++
 arch/arm/boot/dts/imx6dl-victgo.dts | 62 +++++++++++++++++++++++-
 3 files changed, 191 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/imx6dl-plym2m.dts b/arch/arm/boot/dts/imx6dl-plym2m.dts
index 73c7622bfe0f..c4ce23d8ac9f 100644
--- a/arch/arm/boot/dts/imx6dl-plym2m.dts
+++ b/arch/arm/boot/dts/imx6dl-plym2m.dts
@@ -50,6 +50,11 @@ display_out: endpoint {
 		};
 	};
 
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&vdiv_vaccu>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -102,6 +107,26 @@ reg_12v0: regulator-12v0 {
 		regulator-max-microvolt = <12000000>;
 	};
 
+	thermal-zones {
+		chassis-thermal {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&tsens0>;
+		};
+
+		touch-thermal0 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp0>;
+		};
+
+		touch-thermal1 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp1>;
+		};
+	};
+
 	touchscreen {
 		compatible = "resistive-adc-touch";
 		io-channels = <&adc_ts 1>, <&adc_ts 3>, <&adc_ts 4>,
@@ -113,6 +138,32 @@ touchscreen {
 		touchscreen-x-plate-ohms = <300>;
 		touchscreen-y-plate-ohms = <800>;
 	};
+
+	touch_temp0: touch-temperature-sensor0 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 0>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 736
+						85000 474>;
+	};
+
+	touch_temp1: touch-temperature-sensor1 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 7>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 826
+						85000 609>;
+	};
+
+	vdiv_vaccu: voltage-divider-vaccu {
+		compatible = "voltage-divider";
+		io-channels = <&adc_ts 2>;
+		output-ohms = <2500>;
+		full-ohms = <64000>;
+		#io-channel-cells = <0>;
+	};
 };
 
 &can1 {
@@ -153,12 +204,24 @@ adc_ts: adc@0 {
 		#address-cells = <1>;
 		#size-cells = <0>;
 
+		channel@0 {
+			reg = <0>;
+			settling-time-us = <300>;
+			oversampling-ratio = <5>;
+		};
+
 		channel@1 {
 			reg = <1>;
 			settling-time-us = <700>;
 			oversampling-ratio = <5>;
 		};
 
+		channel@2 {
+			reg = <2>;
+			settling-time-us = <300>;
+			oversampling-ratio = <5>;
+		};
+
 		channel@3 {
 			reg = <3>;
 			settling-time-us = <700>;
@@ -176,6 +239,14 @@ channel@5 {
 			settling-time-us = <700>;
 			oversampling-ratio = <5>;
 		};
+
+		/* channel 6 is not connected */
+
+		channel@7 {
+			reg = <7>;
+			settling-time-us = <300>;
+			oversampling-ratio = <5>;
+		};
 	};
 };
 
@@ -260,9 +331,10 @@ &i2c3 {
 	pinctrl-0 = <&pinctrl_i2c3>;
 	status = "okay";
 
-	temperature-sensor@70 {
+	tsens0: temperature-sensor@70 {
 		compatible = "ti,tmp103";
 		reg = <0x70>;
+		#thermal-sensor-cells = <0>;
 	};
 };
 
diff --git a/arch/arm/boot/dts/imx6dl-prtvt7.dts b/arch/arm/boot/dts/imx6dl-prtvt7.dts
index 59e0674420a1..b86deebef7b7 100644
--- a/arch/arm/boot/dts/imx6dl-prtvt7.dts
+++ b/arch/arm/boot/dts/imx6dl-prtvt7.dts
@@ -53,6 +53,11 @@ display_out: endpoint {
 		};
 	};
 
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&vdiv_vaccu>;
+	};
+
 	keys {
 		compatible = "gpio-keys";
 		autorepeat;
@@ -236,6 +241,26 @@ simple-audio-card,codec {
 		};
 	};
 
+	thermal-zones {
+		chassis-thermal {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&tsens0>;
+		};
+
+		touch-thermal0 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp0>;
+		};
+
+		touch-thermal1 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp1>;
+		};
+	};
+
 	touchscreen {
 		compatible = "resistive-adc-touch";
 		io-channels = <&adc_ts 1>, <&adc_ts 3>, <&adc_ts 4>,
@@ -247,6 +272,32 @@ touchscreen {
 		touchscreen-x-plate-ohms = <300>;
 		touchscreen-y-plate-ohms = <800>;
 	};
+
+	touch_temp0: touch-temperature-sensor0 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 0>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 736
+						85000 474>;
+	};
+
+	touch_temp1: touch-temperature-sensor1 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 7>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 826
+						85000 609>;
+	};
+
+	vdiv_vaccu: voltage-divider-vaccu {
+		compatible = "voltage-divider";
+		io-channels = <&adc_ts 2>;
+		output-ohms = <2500>;
+		full-ohms = <64000>;
+		#io-channel-cells = <0>;
+	};
 };
 
 &audmux {
@@ -372,6 +423,12 @@ rtc@51 {
 		reg = <0x51>;
 	};
 
+	tsens0: temperature-sensor@70 {
+		compatible = "ti,tmp103";
+		reg = <0x70>;
+		#thermal-sensor-cells = <0>;
+	};
+
 	gpio_pca: gpio@74 {
 		compatible = "nxp,pca9539";
 		reg = <0x74>;
diff --git a/arch/arm/boot/dts/imx6dl-victgo.dts b/arch/arm/boot/dts/imx6dl-victgo.dts
index 52de091ea452..227c952543d4 100644
--- a/arch/arm/boot/dts/imx6dl-victgo.dts
+++ b/arch/arm/boot/dts/imx6dl-victgo.dts
@@ -66,6 +66,11 @@ enter {
 		};
 	};
 
+	iio-hwmon {
+		compatible = "iio-hwmon";
+		io-channels = <&vdiv_vaccu>, <&vdiv_hitch_pos>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 		pinctrl-names = "default";
@@ -182,6 +187,26 @@ simple-audio-card,codec {
 		};
 	};
 
+	thermal-zones {
+		chassis-thermal {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&tsens0>;
+		};
+
+		touch-thermal0 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp0>;
+		};
+
+		touch-thermal1 {
+			polling-delay = <20000>;
+			polling-delay-passive = <0>;
+			thermal-sensors = <&touch_temp1>;
+		};
+	};
+
 	touchscreen {
 		compatible = "resistive-adc-touch";
 		io-channels = <&adc_ts 1>, <&adc_ts 3>, <&adc_ts 4>,
@@ -193,6 +218,40 @@ touchscreen {
 		touchscreen-x-plate-ohms = <300>;
 		touchscreen-y-plate-ohms = <800>;
 	};
+
+	touch_temp0: touch-temperature-sensor0 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 0>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 736
+						85000 474>;
+	};
+
+	touch_temp1: touch-temperature-sensor1 {
+		compatible = "generic-adc-thermal";
+		#thermal-sensor-cells = <0>;
+		io-channels = <&adc_ts 7>;
+		io-channel-names = "sensor-channel";
+		temperature-lookup-table = <    (-40000) 826
+						85000 609>;
+	};
+
+	vdiv_vaccu: voltage-divider-vaccu {
+		compatible = "voltage-divider";
+		io-channels = <&adc_ts 2>;
+		output-ohms = <2500>;
+		full-ohms = <64000>;
+		#io-channel-cells = <0>;
+	};
+
+	vdiv_hitch_pos: voltage-divider-hitch-pos {
+		compatible = "voltage-divider";
+		io-channels = <&adc_ts 6>;
+		output-ohms = <3300>;
+		full-ohms = <13300>;
+		#io-channel-cells = <0>;
+	};
 };
 
 &audmux {
@@ -477,9 +536,10 @@ rtc@51 {
 		reg = <0x51>;
 	};
 
-	temperature-sensor@70 {
+	tsens0: temperature-sensor@70 {
 		compatible = "ti,tmp103";
 		reg = <0x70>;
+		#thermal-sensor-cells = <0>;
 	};
 };
 
-- 
2.30.2