linux-kernel - [PATCH v2 2/2] ARM: dts: sun8i-r40: Add thermal sensor and thermal zones

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Date:   Mon,  6 Jan 2020 17:46:39 +0000
From:   Yangtao Li <tiny.windzz@...il.com>
To:     robh+dt@...nel.org, mark.rutland@....com, mripard@...nel.org,
        wens@...e.org, anarsoul@...il.com, rui.zhang@...el.com,
        daniel.lezcano@...aro.org, amit.kucheria@...durent.com,
        megous@...ous.com, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-pm@...r.kernel.org
Cc:     Yangtao Li <tiny.windzz@...il.com>
Subject: [PATCH v2 2/2] ARM: dts: sun8i-r40: Add thermal sensor and thermal zones

There are two sensors, sensor0 for CPU, sensor1 for GPU.

Signed-off-by: Yangtao Li <tiny.windzz@...il.com>
Tested-by: Corentin Labbe <clabbe.montjoie@...il.com>
Tested-on: sun8i-r40-bananapi-m2-ultra
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 421dfbbfd7ee..8ccda5cb873f 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -46,6 +46,7 @@
 #include <dt-bindings/clock/sun8i-r40-ccu.h>
 #include <dt-bindings/reset/sun8i-r40-ccu.h>
 #include <dt-bindings/reset/sun8i-de2.h>
+#include <dt-bindings/thermal/thermal.h>
 
 / {
 	#address-cells = <1>;
@@ -109,6 +110,22 @@
 		status = "disabled";
 	};
 
+	thermal-zones {
+		cpu_thermal: cpu0-thermal {
+			/* milliseconds */
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&ths 0>;
+		};
+
+		gpu_thermal: gpu-thermal {
+			/* milliseconds */
+			polling-delay-passive = <0>;
+			polling-delay = <0>;
+			thermal-sensors = <&ths 1>;
+		};
+	};
+
 	soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
@@ -421,6 +438,17 @@
 			clocks = <&osc24M>;
 		};
 
+		ths: thermal-sensor@...4c00 {
+			compatible = "allwinner,sun8i-r40-ths";
+			reg = <0x01c24c00 0x100>;
+			clocks = <&ccu CLK_BUS_THS>, <&ccu CLK_THS>;
+			clock-names = "bus", "mod";
+			interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+			resets = <&ccu RST_BUS_THS>;
+			/* TODO: add nvmem-cells for calibration */
+			#thermal-sensor-cells = <1>;
+		};
+
 		uart0: serial@...8000 {
 			compatible = "snps,dw-apb-uart";
 			reg = <0x01c28000 0x400>;
-- 
2.17.1