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Diffstat (limited to 'doc/device-tree-bindings')
| -rw-r--r-- | doc/device-tree-bindings/exynos/tmu.txt | 41 | 
1 files changed, 41 insertions, 0 deletions
| diff --git a/doc/device-tree-bindings/exynos/tmu.txt b/doc/device-tree-bindings/exynos/tmu.txt new file mode 100644 index 000000000..bb734dcac --- /dev/null +++ b/doc/device-tree-bindings/exynos/tmu.txt @@ -0,0 +1,41 @@ +Exynos Thermal management Unit + +Required properties: + + - compatible : Should be "samsung,exynos-tmu" for TMU + - samsung,min-temp : Minimum temperature value (25 degree celsius) +	- Current temperature of SoC should be more than this value. + - samsung,max-temp : Maximum temperature value (125 degree celsius) +	- Current temperature of SoC should be less than this value. + - samsung,start-warning : Temperature at which TMU starts giving warning (degree celsius) + - samsung,start-tripping : Temperature at which system will trip and shutdown (degree celsius) + - samsung,efuse-min-value : SOC efuse min value (Constant 40) +	- efuse-value should be more than this value. + - samsung,efuse-value : SOC actual efuse value (Literal value) +	- This is the data trimming info. +	- This value is used to calculate measuring error. + - samsung,efuse-max-value : SoC max efuse value (Constant 100) +	- efuse-value should be less than this value. + - samsung,slope : Default value 274761730 (Constant 0x1060_8802). +	- This is the default value for TMU_CONTROL register. +	- It sets the gain of amplifier to the positive-tc generator block. +	- It selects thermal tripping mode and enables thermal tripping. + - samsung,dc-value : Measured data calibration value (Constant 25) +	- Used for tempearture calculation. +	- This is 25 because temperature measured is always above 25 degrees. + + +Example: + +tmu@10060000 { +	compatible = "samsung,exynos-tmu" +	samsung,min-temp = <25>; +	samsung,max-temp = <125>; +	samsung,start-warning = <95>; +	samsung,start-tripping = <105>; +	samsung,efuse-min-value = <40>; +	samsung,efuse-value = <55>; +	samsung,efuse-max-value = <100>; +	samsung,slope = <274761730>; +	samsung,dc-value = <25>; +}; |