| * Exynos Thermal Management Unit (TMU) |
| |
| ** Required properties: |
| |
| - compatible : One of the following: |
| "samsung,exynos4412-tmu" |
| "samsung,exynos4210-tmu" |
| "samsung,exynos5250-tmu" |
| "samsung,exynos5260-tmu" |
| "samsung,exynos5420-tmu" for TMU channel 0, 1 on Exynos5420 |
| "samsung,exynos5420-tmu-ext-triminfo" for TMU channels 2, 3 and 4 |
| Exynos5420 (Must pass triminfo base and triminfo clock) |
| "samsung,exynos5440-tmu" |
| - interrupt-parent : The phandle for the interrupt controller |
| - reg : Address range of the thermal registers. For soc's which has multiple |
| instances of TMU and some registers are shared across all TMU's like |
| interrupt related then 2 set of register has to supplied. First set |
| belongs to register set of TMU instance and second set belongs to |
| registers shared with the TMU instance. |
| |
| NOTE: On Exynos5420, the TRIMINFO register is misplaced for TMU |
| channels 2, 3 and 4 |
| Use "samsung,exynos5420-tmu-ext-triminfo" in cases, there is a misplaced |
| register, also provide clock to access that base. |
| |
| TRIMINFO at 0x1006c000 contains data for TMU channel 3 |
| TRIMINFO at 0x100a0000 contains data for TMU channel 4 |
| TRIMINFO at 0x10068000 contains data for TMU channel 2 |
| |
| - interrupts : Should contain interrupt for thermal system |
| - clocks : The main clocks for TMU device |
| -- 1. operational clock for TMU channel |
| -- 2. optional clock to access the shared registers of TMU channel |
| - clock-names : Thermal system clock name |
| -- "tmu_apbif" operational clock for current TMU channel |
| -- "tmu_triminfo_apbif" clock to access the shared triminfo register |
| for current TMU channel |
| - vtmu-supply: This entry is optional and provides the regulator node supplying |
| voltage to TMU. If needed this entry can be placed inside |
| board/platform specific dts file. |
| |
| Example 1): |
| |
| tmu@100C0000 { |
| compatible = "samsung,exynos4412-tmu"; |
| interrupt-parent = <&combiner>; |
| reg = <0x100C0000 0x100>; |
| interrupts = <2 4>; |
| clocks = <&clock 383>; |
| clock-names = "tmu_apbif"; |
| status = "disabled"; |
| vtmu-supply = <&tmu_regulator_node>; |
| }; |
| |
| Example 2): |
| |
| tmuctrl_0: tmuctrl@160118 { |
| compatible = "samsung,exynos5440-tmu"; |
| reg = <0x160118 0x230>, <0x160368 0x10>; |
| interrupts = <0 58 0>; |
| clocks = <&clock 21>; |
| clock-names = "tmu_apbif"; |
| }; |
| |
| Example 3): (In case of Exynos5420 "with misplaced TRIMINFO register") |
| tmu_cpu2: tmu@10068000 { |
| compatible = "samsung,exynos5420-tmu-ext-triminfo"; |
| reg = <0x10068000 0x100>, <0x1006c000 0x4>; |
| interrupts = <0 184 0>; |
| clocks = <&clock 318>, <&clock 318>; |
| clock-names = "tmu_apbif", "tmu_triminfo_apbif"; |
| }; |
| |
| tmu_cpu3: tmu@1006c000 { |
| compatible = "samsung,exynos5420-tmu-ext-triminfo"; |
| reg = <0x1006c000 0x100>, <0x100a0000 0x4>; |
| interrupts = <0 185 0>; |
| clocks = <&clock 318>, <&clock 319>; |
| clock-names = "tmu_apbif", "tmu_triminfo_apbif"; |
| }; |
| |
| tmu_gpu: tmu@100a0000 { |
| compatible = "samsung,exynos5420-tmu-ext-triminfo"; |
| reg = <0x100a0000 0x100>, <0x10068000 0x4>; |
| interrupts = <0 215 0>; |
| clocks = <&clock 319>, <&clock 318>; |
| clock-names = "tmu_apbif", "tmu_triminfo_apbif"; |
| }; |
| |
| Note: For multi-instance tmu each instance should have an alias correctly |
| numbered in "aliases" node. |
| |
| Example: |
| |
| aliases { |
| tmuctrl0 = &tmuctrl_0; |
| tmuctrl1 = &tmuctrl_1; |
| tmuctrl2 = &tmuctrl_2; |
| }; |