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diff --git a/Documentation/thermal/exynos_thermal_emulation.rst b/Documentation/thermal/exynos_thermal_emulation.rst deleted file mode 100644 index c21d10838bc5..000000000000 --- a/Documentation/thermal/exynos_thermal_emulation.rst +++ /dev/null @@ -1,61 +0,0 @@ -===================== -Exynos Emulation Mode -===================== - -Copyright (C) 2012 Samsung Electronics - -Written by Jonghwa Lee <jonghwa3.lee@samsung.com> - -Description ------------ - -Exynos 4x12 (4212, 4412) and 5 series provide emulation mode for thermal -management unit. Thermal emulation mode supports software debug for -TMU's operation. User can set temperature manually with software code -and TMU will read current temperature from user value not from sensor's -value. - -Enabling CONFIG_THERMAL_EMULATION option will make this support -available. When it's enabled, sysfs node will be created as -/sys/devices/virtual/thermal/thermal_zone'zone id'/emul_temp. - -The sysfs node, 'emul_node', will contain value 0 for the initial state. -When you input any temperature you want to update to sysfs node, it -automatically enable emulation mode and current temperature will be -changed into it. - -(Exynos also supports user changeable delay time which would be used to -delay of changing temperature. However, this node only uses same delay -of real sensing time, 938us.) - -Exynos emulation mode requires synchronous of value changing and -enabling. It means when you want to update the any value of delay or -next temperature, then you have to enable emulation mode at the same -time. (Or you have to keep the mode enabling.) If you don't, it fails to -change the value to updated one and just use last succeessful value -repeatedly. That's why this node gives users the right to change -termerpature only. Just one interface makes it more simply to use. - -Disabling emulation mode only requires writing value 0 to sysfs node. - -:: - - - TEMP 120 | - | - 100 | - | - 80 | - | +----------- - 60 | | | - | +-------------| | - 40 | | | | - | | | | - 20 | | | +---------- - | | | | | - 0 |______________|_____________|__________|__________|_________ - A A A A TIME - |<----->| |<----->| |<----->| | - | 938us | | | | | | - emulation : 0 50 | 70 | 20 | 0 - current temp: sensor 50 70 20 sensor |