1* Exynos Thermal Management Unit (TMU)
2
3** Required properties:
4
5- compatible : One of the following:
6	       "samsung,exynos3250-tmu"
7	       "samsung,exynos4412-tmu"
8	       "samsung,exynos4210-tmu"
9	       "samsung,exynos5250-tmu"
10	       "samsung,exynos5260-tmu"
11	       "samsung,exynos5420-tmu" for TMU channel 0, 1 on Exynos5420
12	       "samsung,exynos5420-tmu-ext-triminfo" for TMU channels 2, 3 and 4
13			Exynos5420 (Must pass triminfo base and triminfo clock)
14	       "samsung,exynos5440-tmu"
15	       "samsung,exynos7-tmu"
16- interrupt-parent : The phandle for the interrupt controller
17- reg : Address range of the thermal registers. For soc's which has multiple
18	instances of TMU and some registers are shared across all TMU's like
19	interrupt related then 2 set of register has to supplied. First set
20	belongs	to register set of TMU instance and second set belongs to
21	registers shared with the TMU instance.
22
23  NOTE: On Exynos5420, the TRIMINFO register is misplaced for TMU
24	channels 2, 3 and 4
25	Use "samsung,exynos5420-tmu-ext-triminfo" in cases, there is a misplaced
26	register, also provide clock to access that base.
27
28	TRIMINFO at 0x1006c000 contains data for TMU channel 3
29	TRIMINFO at 0x100a0000 contains data for TMU channel 4
30	TRIMINFO at 0x10068000 contains data for TMU channel 2
31
32- interrupts : Should contain interrupt for thermal system
33- clocks : The main clocks for TMU device
34	-- 1. operational clock for TMU channel
35	-- 2. optional clock to access the shared registers of TMU channel
36	-- 3. optional special clock for functional operation
37- clock-names : Thermal system clock name
38	-- "tmu_apbif" operational clock for current TMU channel
39	-- "tmu_triminfo_apbif" clock to access the shared triminfo register
40		for current TMU channel
41	-- "tmu_sclk" clock for functional operation of the current TMU
42		channel
43- vtmu-supply: This entry is optional and provides the regulator node supplying
44		voltage to TMU. If needed this entry can be placed inside
45		board/platform specific dts file.
46Following properties are mandatory (depending on SoC):
47- samsung,tmu_gain: Gain value for internal TMU operation.
48- samsung,tmu_reference_voltage: Value of TMU IP block's reference voltage
49- samsung,tmu_noise_cancel_mode: Mode for noise cancellation
50- samsung,tmu_efuse_value: Default level of temperature - it is needed when
51			   in factory fusing produced wrong value
52- samsung,tmu_min_efuse_value: Minimum temperature fused value
53- samsung,tmu_max_efuse_value: Maximum temperature fused value
54- samsung,tmu_first_point_trim: First point trimming value
55- samsung,tmu_second_point_trim: Second point trimming value
56- samsung,tmu_default_temp_offset: Default temperature offset
57- samsung,tmu_cal_type: Callibration type
58
59Example 1):
60
61	tmu@100C0000 {
62		compatible = "samsung,exynos4412-tmu";
63		interrupt-parent = <&combiner>;
64		reg = <0x100C0000 0x100>;
65		interrupts = <2 4>;
66		clocks = <&clock 383>;
67		clock-names = "tmu_apbif";
68		status = "disabled";
69		vtmu-supply = <&tmu_regulator_node>;
70		#include "exynos4412-tmu-sensor-conf.dtsi"
71	};
72
73Example 2):
74
75	tmuctrl_0: tmuctrl@160118 {
76		compatible = "samsung,exynos5440-tmu";
77		reg = <0x160118 0x230>, <0x160368 0x10>;
78		interrupts = <0 58 0>;
79		clocks = <&clock 21>;
80		clock-names = "tmu_apbif";
81		#include "exynos5440-tmu-sensor-conf.dtsi"
82	};
83
84Example 3): (In case of Exynos5420 "with misplaced TRIMINFO register")
85	tmu_cpu2: tmu@10068000 {
86		compatible = "samsung,exynos5420-tmu-ext-triminfo";
87		reg = <0x10068000 0x100>, <0x1006c000 0x4>;
88		interrupts = <0 184 0>;
89		clocks = <&clock 318>, <&clock 318>;
90		clock-names = "tmu_apbif", "tmu_triminfo_apbif";
91		#include "exynos4412-tmu-sensor-conf.dtsi"
92	};
93
94	tmu_cpu3: tmu@1006c000 {
95		compatible = "samsung,exynos5420-tmu-ext-triminfo";
96		reg = <0x1006c000 0x100>, <0x100a0000 0x4>;
97		interrupts = <0 185 0>;
98		clocks = <&clock 318>, <&clock 319>;
99		clock-names = "tmu_apbif", "tmu_triminfo_apbif";
100		#include "exynos4412-tmu-sensor-conf.dtsi"
101	};
102
103	tmu_gpu: tmu@100a0000 {
104		compatible = "samsung,exynos5420-tmu-ext-triminfo";
105		reg = <0x100a0000 0x100>, <0x10068000 0x4>;
106		interrupts = <0 215 0>;
107		clocks = <&clock 319>, <&clock 318>;
108		clock-names = "tmu_apbif", "tmu_triminfo_apbif";
109		#include "exynos4412-tmu-sensor-conf.dtsi"
110	};
111
112Note: For multi-instance tmu each instance should have an alias correctly
113numbered in "aliases" node.
114
115Example:
116
117aliases {
118	tmuctrl0 = &tmuctrl_0;
119	tmuctrl1 = &tmuctrl_1;
120	tmuctrl2 = &tmuctrl_2;
121};
122