diff options
| -rw-r--r-- | arch/arm/dts/exynos5250.dtsi | 5 | ||||
| -rw-r--r-- | board/samsung/dts/exynos5250-smdk5250.dts | 12 | ||||
| -rw-r--r-- | doc/device-tree-bindings/exynos/tmu.txt | 41 | ||||
| -rw-r--r-- | include/fdtdec.h | 1 | ||||
| -rw-r--r-- | lib/fdtdec.c | 1 |
5 files changed, 60 insertions, 0 deletions
diff --git a/arch/arm/dts/exynos5250.dtsi b/arch/arm/dts/exynos5250.dtsi index ed8c8dd..61d35a8 100644 --- a/arch/arm/dts/exynos5250.dtsi +++ b/arch/arm/dts/exynos5250.dtsi @@ -151,4 +151,9 @@ }; }; + tmu@10060000 { + compatible = "samsung,exynos-tmu"; + reg = <0x10060000 0x10000>; + }; + }; diff --git a/board/samsung/dts/exynos5250-smdk5250.dts b/board/samsung/dts/exynos5250-smdk5250.dts index cbfab6f..00dac40 100644 --- a/board/samsung/dts/exynos5250-smdk5250.dts +++ b/board/samsung/dts/exynos5250-smdk5250.dts @@ -66,4 +66,16 @@ compatible = "maxim,max77686_pmic"; }; }; + + tmu@10060000 { + 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>; + }; }; diff --git a/doc/device-tree-bindings/exynos/tmu.txt b/doc/device-tree-bindings/exynos/tmu.txt new file mode 100644 index 0000000..bb734dc --- /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>; +}; diff --git a/include/fdtdec.h b/include/fdtdec.h index b885a95..6552942 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -80,6 +80,7 @@ enum fdt_compat_id { COMPAT_SAMSUNG_EXYNOS_SPI, /* Exynos SPI */ COMPAT_SAMSUNG_EXYNOS_EHCI, /* Exynos EHCI controller */ COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */ + COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */ COMPAT_MAXIM_MAX77686_PMIC, /* MAX77686 PMIC */ COMPAT_MAXIM_98095_CODEC, /* MAX98095 Codec */ diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 9a527ff..88f6b68 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -55,6 +55,7 @@ static const char * const compat_names[COMPAT_COUNT] = { COMPAT(SAMSUNG_EXYNOS_SPI, "samsung,exynos-spi"), COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"), COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), + COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"), COMPAT(MAXIM_98095_CODEC, "maxim,max98095-codec"), }; |