linux-kernel - [PATCH v2 8/8] arm64: dts: rockchip: add thermal support to Quartz64 Model A

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Date:   Wed, 28 Jul 2021 14:00:34 -0400
From:   Peter Geis <pgwipeout@...il.com>
To:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc:     Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2 8/8] arm64: dts: rockchip: add thermal support to Quartz64 Model A

Add the thermal nodes for the Quartz64 Model A.
The Model A supports a single speed gpio fan.

Signed-off-by: Peter Geis <pgwipeout@...il.com>
---
 .../boot/dts/rockchip/rk3566-quartz64-a.dts   | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
index b239f314b38a..a244f7b87e38 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
@@ -27,6 +27,14 @@ gmac1_clkin: external-gmac1-clock {
 		#clock-cells = <0>;
 	};
 
+	fan: gpio_fan {
+		compatible = "gpio-fan";
+		gpios = <&gpio0 RK_PD5 GPIO_ACTIVE_HIGH>;
+		gpio-fan,speed-map = <0    0
+				      4500 1>;
+		#cooling-cells = <2>;
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
@@ -124,6 +132,23 @@ &cpu3 {
 	cpu-supply = <&vdd_cpu>;
 };
 
+&cpu_thermal {
+	trips {
+		cpu_hot: cpu_hot {
+			temperature = <55000>;
+			hysteresis = <2000>;
+			type = "active";
+		};
+	};
+
+	cooling-maps {
+		map1 {
+			trip = <&cpu_hot>;
+			cooling-device = <&fan THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
 &gmac1 {
 	assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1_RGMII_SPEED>, <&cru SCLK_GMAC1>;
 	assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>, <&cru SCLK_GMAC1>, <&gmac1_clkin>;
@@ -433,6 +458,14 @@ &sdmmc0 {
 	status = "okay";
 };
 
+&tsadc {
+	/* tshut mode 0:CRU 1:GPIO */
+	rockchip,hw-tshut-mode = <1>;
+	/* tshut polarity 0:LOW 1:HIGH */
+	rockchip,hw-tshut-polarity = <0>;
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0_xfer>;
-- 
2.25.1