openwrt/target/linux/bcm53xx/patches-4.9/033-0020-ARM-dts-BCM5301X-Add-CPU-thermal-sensor-and-zone.patch

From e55d2c7272ff647efac4aecd895b20ee66e43519 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Fri, 14 Apr 2017 23:42:28 +0200
Subject: [PATCH] ARM: dts: BCM5301X: Add CPU thermal sensor and zone
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This uses CPU thermal sensor available on every Northstar chipset to
monitor temperature. We don't have any cooling or throttling so only a
critical trip was added.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
 arch/arm/boot/dts/bcm5301x.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

--- a/arch/arm/boot/dts/bcm5301x.dtsi
+++ b/arch/arm/boot/dts/bcm5301x.dtsi
@@ -363,6 +363,12 @@
 				     "sata2";
 	};
 
+	thermal: thermal@1800c2c0 {
+		compatible = "brcm,ns-thermal";
+		reg = <0x1800c2c0 0x10>;
+		#thermal-sensor-cells = <0>;
+	};
+
 	srab: srab@18007000 {
 		compatible = "brcm,bcm5301x-srab";
 		reg = <0x18007000 0x1000>;
@@ -390,4 +396,24 @@
 
 		brcm,nand-has-wp;
 	};
+
+	thermal-zones {
+		cpu_thermal: cpu-thermal {
+			polling-delay-passive = <0>;
+			polling-delay = <1000>;
+			coefficients = <(-556) 418000>;
+			thermal-sensors = <&thermal>;
+
+			trips {
+				cpu-crit {
+					temperature	= <125000>;
+					hysteresis	= <0>;
+					type		= "critical";
+				};
+			};
+
+			cooling-maps {
+			};
+		};
+	};
 };