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author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-03-28 18:50:01 +0100 |
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committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-03-28 18:50:01 +0100 |
commit | 009d75ccc11d27b9a083375a88bb93cb746b4800 (patch) | |
tree | 12abe9fcf437d58b73ee1fa8d422548560deaae5 /doc | |
parent | 417c55803118eb8e350d5ab8ba6583fb39f4e2e3 (diff) | |
parent | d53e340edf65ff253d3a7b06ebe60501045892e3 (diff) | |
download | u-boot-imx-009d75ccc11d27b9a083375a88bb93cb746b4800.zip u-boot-imx-009d75ccc11d27b9a083375a88bb93cb746b4800.tar.gz u-boot-imx-009d75ccc11d27b9a083375a88bb93cb746b4800.tar.bz2 |
Merge branch 'u-boot/master' into 'u-boot-arm/master'
Conflicts:
drivers/spi/tegra20_sflash.c
include/fdtdec.h
lib/fdtdec.c
Diffstat (limited to 'doc')
-rw-r--r-- | doc/device-tree-bindings/exynos/tmu.txt | 44 |
1 files changed, 44 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 0000000..89d3bf0 --- /dev/null +++ b/doc/device-tree-bindings/exynos/tmu.txt @@ -0,0 +1,44 @@ +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 TMU shuts down the system (degree celsius) + - samsung,hw-tripping : Temperature at which hardware tripping should happen + in case TMU fails to power off (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,hw-tripping = <110>; + samsung,efuse-min-value = <40>; + samsung,efuse-value = <55>; + samsung,efuse-max-value = <100>; + samsung,slope = <274761730>; + samsung,dc-value = <25>; +}; |