From: Akshay Saraswat akshay.s@samsung.com
Fdt entry for Exynos TMU driver specific pre-defined values used for calibration of current temperature and defining threshold values.
Signed-off-by: Akshay Saraswat akshay.s@samsung.com Acked-by: Simon Glass sjg@chromium.org --- Changes since v2: - None
arch/arm/dts/exynos5250.dtsi | 5 ++++ board/samsung/dts/exynos5250-smdk5250.dts | 13 ++++++++++ doc/device-tree-bindings/exynos/tmu.txt | 35 +++++++++++++++++++++++++++++ include/fdtdec.h | 1 + lib/fdtdec.c | 1 + 5 files changed, 55 insertions(+), 0 deletions(-) create mode 100644 doc/device-tree-bindings/exynos/tmu.txt
diff --git a/arch/arm/dts/exynos5250.dtsi b/arch/arm/dts/exynos5250.dtsi index fa4d498..db22db6 100644 --- a/arch/arm/dts/exynos5250.dtsi +++ b/arch/arm/dts/exynos5250.dtsi @@ -28,4 +28,9 @@ #address-cells = <1>; #size-cells = <0>; }; + + tmu@10060000 { + compatible = "samsung,exynos-tmu"; + reg = <0x10060000 0xffff>; + }; }; diff --git a/board/samsung/dts/exynos5250-smdk5250.dts b/board/samsung/dts/exynos5250-smdk5250.dts index b6fbb67..2d3ecca 100644 --- a/board/samsung/dts/exynos5250-smdk5250.dts +++ b/board/samsung/dts/exynos5250-smdk5250.dts @@ -26,4 +26,17 @@ phy-mode = "mii"; }; }; + + tmu@10060000 { + samsung,mux = <6>; + 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 = <268470274>; + 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..99e7164 --- /dev/null +++ b/doc/device-tree-bindings/exynos/tmu.txt @@ -0,0 +1,35 @@ +Exynos Thermal management Unit + +The device node for TMU that is a part of Exynos5250 +SOC is as described in the document "Open Firmware Recommended +Practic : Universal Serial Bus" with the following modifications +and additions: + +Required properties : + - compatible : Should be "samsung,exynos-tmu" for TMU + - samsung,mux : mux Address for the TMU to enable TMU core: + - samsung,min-temp : Minimum temperature, default is 25: + - samsung,max-temp : Maximum temperature, defalut set to 125: + - samsung,start-warning : temp at which TMU start giving warning: + - samsung,start-tripping : temp at which system will trip and shutdown: + - samsung,efuse-min-value : SOC efuse min value: + - samsung,efuse-value : SOC actual efuse value: + - samsung,efuse-max-value : SoC max efuse value: + - samsung,slope : Gain of amplifier, default is 268470274: + - samsung,dc-value : DC value of TMU, default is 25: + +Example: + +tmu@10060000 { + compatible = "samsung,exynos-tmu" + samsung,mux = <6>; + 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 = <268470274>; + samsung,dc-value = <25>; +}; diff --git a/include/fdtdec.h b/include/fdtdec.h index 8f79f8a..180dfff 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -68,6 +68,7 @@ enum fdt_compat_id { COMPAT_NVIDIA_TEGRA20_NAND, /* Tegra2 NAND controller */ COMPAT_SMSC_LAN9215, /* SMSC 10/100 Ethernet LAN9215 */ COMPAT_SAMSUNG_EXYNOS5_SROMC, /* Exynos5 SROMC */ + COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */
COMPAT_COUNT, }; diff --git a/lib/fdtdec.c b/lib/fdtdec.c index d8103fd..8e5ed21 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -45,6 +45,7 @@ static const char * const compat_names[COMPAT_COUNT] = { COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"), COMPAT(SMSC_LAN9215, "smsc,lan9215"), COMPAT(SAMSUNG_EXYNOS5_SROMC, "samsung,exynos-sromc"), + COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), };
const char *fdtdec_get_compatible(enum fdt_compat_id id)