[PATCH v2] arm64: dts: Add tmu node for exynos7

[Alim Akhtar]

This patch adds tmu node, related temprature sensor and triping
point data for Atlas cpu core found on exynos7 SoC.

Signed-off-by: Alim Akhtar <alim.akhtar at samsung.com>
---
Changes since v1:
* Addressed krzysztof's review comments.

 .../boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi   |   25 +++++++++
 .../arm64/boot/dts/exynos/exynos7-trip-points.dtsi |   54 ++++++++++++++++++++
 arch/arm64/boot/dts/exynos/exynos7.dtsi            |   20 ++++++++
 3 files changed, 99 insertions(+)
 create mode 100644 arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
 create mode 100644 arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi

diff --git a/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi b/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
new file mode 100644
index 0000000..1d6dcf2
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos7-tmu-sensor-conf.dtsi
@@ -0,0 +1,25 @@
+/*
+ * Device tree sources for Exynos7 TMU sensor configuration
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+#include <dt-bindings/thermal/thermal_exynos.h>
+
+#thermal-sensor-cells = <0>;
+samsung,tmu_gain = <9>;
+samsung,tmu_reference_voltage = <17>;
+samsung,tmu_noise_cancel_mode = <4>;
+samsung,tmu_efuse_value = <75>;
+samsung,tmu_min_efuse_value = <15>;
+samsung,tmu_max_efuse_value = <100>;
+samsung,tmu_first_point_trim = <25>;
+samsung,tmu_second_point_trim = <85>;
+samsung,tmu_default_temp_offset = <50>;
+samsung,tmu_cal_type = <TYPE_ONE_POINT_TRIMMING>;
diff --git a/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi b/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi
new file mode 100644
index 0000000..0623583
--- /dev/null
+++ b/arch/arm64/boot/dts/exynos/exynos7-trip-points.dtsi
@@ -0,0 +1,54 @@
+/*
+ * Device tree sources for default Exynos7 thermal zone definition
+ *
+ * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ *		http://www.samsung.com
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ */
+
+trips {
+	cpu-alert-0 {
+		temperature = <75000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-1 {
+		temperature = <80000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-2 {
+		temperature = <85000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-3 {
+		temperature = <90000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-4 {
+		temperature = <95000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-5 {
+		temperature = <100000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-alert-6 {
+		temperature = <110000>; /* millicelsius */
+		hysteresis = <10000>; /* millicelsius */
+		type = "passive";
+	};
+	cpu-crit-0 {
+		temperature = <115000>; /* millicelsius */
+		hysteresis = <0>; /* millicelsius */
+		type = "critical";
+	};
+};
diff --git a/arch/arm64/boot/dts/exynos/exynos7.dtsi b/arch/arm64/boot/dts/exynos/exynos7.dtsi
index c662f98..19de742 100644
--- a/arch/arm64/boot/dts/exynos/exynos7.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos7.dtsi
@@ -27,6 +27,7 @@
 		pinctrl6 = &pinctrl_fsys0;
 		pinctrl7 = &pinctrl_fsys1;
 		pinctrl8 = &pinctrl_bus1;
+		tmuctrl0 = &tmuctrl_0;
 	};
 
 	cpus {
@@ -538,6 +539,25 @@
 			clocks = <&clock_peric0 PCLK_PWM>;
 			clock-names = "timers";
 		};
+
+		tmuctrl_0: tmu at 10060000 {
+			compatible = "samsung,exynos7-tmu";
+			reg = <0x10060000 0x200>;
+			interrupts = <0 108 0>;
+			clocks = <&clock_peris PCLK_TMU>,
+				 <&clock_peris SCLK_TMU>;
+			clock-names = "tmu_apbif", "tmu_sclk";
+			#include "exynos7-tmu-sensor-conf.dtsi"
+		};
+
+		thermal-zones {
+			atlas_thermal: cluster0-thermal {
+				polling-delay-passive = <0>; /* milliseconds */
+				polling-delay = <0>; /* milliseconds */
+				thermal-sensors = <&tmuctrl_0>;
+				#include "exynos7-trip-points.dtsi"
+			};
+		};
 	};
 };
 
-- 
1.7.10.4