| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/thermal/samsung,exynos-thermal.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Samsung Exynos SoC Thermal Management Unit (TMU) |
| 8 | |
| 9 | maintainers: |
| 10 | - Krzysztof Kozlowski <krzk@kernel.org> |
| 11 | |
| 12 | description: | |
| 13 | For multi-instance tmu each instance should have an alias correctly numbered |
| 14 | in "aliases" node. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | enum: |
| 19 | - samsung,exynos3250-tmu |
| 20 | - samsung,exynos4412-tmu |
| 21 | - samsung,exynos4210-tmu |
| 22 | - samsung,exynos5250-tmu |
| 23 | - samsung,exynos5260-tmu |
| 24 | # For TMU channel 0, 1 on Exynos5420: |
| 25 | - samsung,exynos5420-tmu |
| 26 | # For TMU channels 2, 3 and 4 of Exynos5420: |
| 27 | - samsung,exynos5420-tmu-ext-triminfo |
| 28 | - samsung,exynos5433-tmu |
| 29 | - samsung,exynos7-tmu |
| 30 | |
| 31 | clocks: |
| 32 | minItems: 1 |
| 33 | maxItems: 3 |
| 34 | |
| 35 | clock-names: |
| 36 | minItems: 1 |
| 37 | maxItems: 3 |
| 38 | |
| 39 | interrupts: |
| 40 | description: | |
| 41 | The Exynos TMU supports generating interrupts when reaching given |
| 42 | temperature thresholds. Number of supported thermal trip points depends |
| 43 | on the SoC (only first trip points defined in DT will be configured):: |
| 44 | - most of SoC: 4 |
| 45 | - samsung,exynos5433-tmu: 8 |
| 46 | - samsung,exynos7-tmu: 8 |
| 47 | maxItems: 1 |
| 48 | |
| 49 | reg: |
| 50 | items: |
| 51 | - description: TMU instance registers. |
| 52 | - description: | |
| 53 | Shared TMU registers. |
| 54 | |
| 55 | Note:: On Exynos5420, the TRIMINFO register is misplaced for TMU |
| 56 | channels 2, 3 and 4 Use "samsung,exynos5420-tmu-ext-triminfo" in |
| 57 | cases, there is a misplaced register, also provide clock to access |
| 58 | that base. |
| 59 | TRIMINFO at 0x1006c000 contains data for TMU channel 3 |
| 60 | TRIMINFO at 0x100a0000 contains data for TMU channel 4 |
| 61 | TRIMINFO at 0x10068000 contains data for TMU channel 2 |
| 62 | minItems: 1 |
| 63 | |
| 64 | '#thermal-sensor-cells': true |
| 65 | |
| 66 | vtmu-supply: |
| 67 | description: The regulator node supplying voltage to TMU. |
| 68 | |
| 69 | required: |
| 70 | - compatible |
| 71 | - clocks |
| 72 | - clock-names |
| 73 | - interrupts |
| 74 | - reg |
| 75 | |
| 76 | allOf: |
| 77 | - $ref: /schemas/thermal/thermal-sensor.yaml |
| 78 | - if: |
| 79 | properties: |
| 80 | compatible: |
| 81 | contains: |
| 82 | const: samsung,exynos5420-tmu-ext-triminfo |
| 83 | then: |
| 84 | properties: |
| 85 | clocks: |
| 86 | items: |
| 87 | - description: |
| 88 | Operational clock for TMU channel. |
| 89 | - description: |
| 90 | Optional clock to access the shared registers (e.g. TRIMINFO) of TMU |
| 91 | channel. |
| 92 | clock-names: |
| 93 | items: |
| 94 | - const: tmu_apbif |
| 95 | - const: tmu_triminfo_apbif |
| 96 | reg: |
| 97 | minItems: 2 |
| 98 | maxItems: 2 |
| 99 | - if: |
| 100 | properties: |
| 101 | compatible: |
| 102 | contains: |
| 103 | enum: |
| 104 | - samsung,exynos5433-tmu |
| 105 | - samsung,exynos7-tmu |
| 106 | then: |
| 107 | properties: |
| 108 | clocks: |
| 109 | items: |
| 110 | - description: |
| 111 | Operational clock for TMU channel. |
| 112 | - description: |
| 113 | Optional special clock for functional operation of TMU channel. |
| 114 | clock-names: |
| 115 | items: |
| 116 | - const: tmu_apbif |
| 117 | - const: tmu_sclk |
| 118 | reg: |
| 119 | minItems: 1 |
| 120 | maxItems: 1 |
| 121 | |
| 122 | - if: |
| 123 | properties: |
| 124 | compatible: |
| 125 | contains: |
| 126 | enum: |
| 127 | - samsung,exynos3250-tmu |
| 128 | - samsung,exynos4412-tmu |
| 129 | - samsung,exynos4210-tmu |
| 130 | - samsung,exynos5250-tmu |
| 131 | - samsung,exynos5260-tmu |
| 132 | - samsung,exynos5420-tmu |
| 133 | then: |
| 134 | properties: |
| 135 | clocks: |
| 136 | minItems: 1 |
| 137 | maxItems: 1 |
| 138 | reg: |
| 139 | minItems: 1 |
| 140 | maxItems: 1 |
| 141 | |
| 142 | additionalProperties: false |
| 143 | |
| 144 | examples: |
| 145 | - | |
| 146 | #include <dt-bindings/clock/exynos4.h> |
| 147 | |
| 148 | tmu@100c0000 { |
| 149 | compatible = "samsung,exynos4412-tmu"; |
| 150 | reg = <0x100C0000 0x100>; |
| 151 | interrupt-parent = <&combiner>; |
| 152 | interrupts = <2 4>; |
| 153 | #thermal-sensor-cells = <0>; |
| 154 | clocks = <&clock CLK_TMU_APBIF>; |
| 155 | clock-names = "tmu_apbif"; |
| 156 | vtmu-supply = <&ldo10_reg>; |
| 157 | }; |
| 158 | |
| 159 | - | |
| 160 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 161 | |
| 162 | tmu@10068000 { |
| 163 | compatible = "samsung,exynos5420-tmu-ext-triminfo"; |
| 164 | reg = <0x10068000 0x100>, <0x1006c000 0x4>; |
| 165 | interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>; |
| 166 | #thermal-sensor-cells = <0>; |
| 167 | clocks = <&clock 318>, <&clock 318>; /* CLK_TMU */ |
| 168 | clock-names = "tmu_apbif", "tmu_triminfo_apbif"; |
| 169 | vtmu-supply = <&ldo7_reg>; |
| 170 | }; |
| 171 | |
| 172 | - | |
| 173 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 174 | |
| 175 | tmu@10060000 { |
| 176 | compatible = "samsung,exynos5433-tmu"; |
| 177 | reg = <0x10060000 0x200>; |
| 178 | interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>; |
| 179 | #thermal-sensor-cells = <0>; |
| 180 | clocks = <&cmu_peris 3>, /* CLK_PCLK_TMU0_APBIF */ |
| 181 | <&cmu_peris 35>; /* CLK_SCLK_TMU0 */ |
| 182 | clock-names = "tmu_apbif", "tmu_sclk"; |
| 183 | vtmu-supply = <&ldo3_reg>; |
| 184 | }; |