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Thu, 24 Jan 2013 00:03:33 +0900 (KST) Received: from chrome-ubuntu.sisodomain.com ([107.108.73.106]) by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MH300D9M3505S40@mmp2.samsung.com> for u-boot@lists.denx.de; Thu, 24 Jan 2013 00:03:33 +0900 (KST) From: Akshay Saraswat To: u-boot@lists.denx.de Date: Wed, 23 Jan 2013 10:24:35 -0500 Message-id: <1358954681-6217-4-git-send-email-akshay.s@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1358954681-6217-1-git-send-email-akshay.s@samsung.com> References: <1358954681-6217-1-git-send-email-akshay.s@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrMLMWRmVeSWpSXmKPExsWyRsSkTvfo7/8BBhPnSli83dvJ7sDocfbO DsYAxigum5TUnMyy1CJ9uwSujIX7tjAXnFKrmPajk72B8YZ8FyMnh4SAicSTI2dZIWwxiQv3 1rOB2EICSxkl9r61h6nZtPUkcxcjF1B8OqPEr6c72SCcZUwSV06sBOtmE9CR2L7kOzuILSIg IfGr/yojiM0s4CKx7uY1MFtYwEHiTscvsHoWAVWJf9tmg8V5BZwlNk68xAyxTU7iw55HYHM4 gXqn9X1igbjIWeLh74dgiyUELrNJ9B2dzgIxSEDi2+RDQDYHUEJWYtMBqDmSEgdX3GCZwCi8 gJFhFaNoakFyQXFSeq6hXnFibnFpXrpecn7uJkZgEJ7+90xqB+PKBotDjAIcjEo8vAnP/gUI sSaWFVfmHmKU4GBWEuGVffo/QIg3JbGyKrUoP76oNCe1+BBjMtDyicxSosn5wAjJK4k3NDYx NzU2tTQyMjM1JU1YSZyX8dSTACGB9MSS1OzU1ILUIpgtTBycUg2MpT+vzdv+5felAuZrE3jn hZxg+xJ/TfN4vsGxbw8OzfZYHiiXe2ax2CV/N0ObH15LXzxky3n2o7jgd/l3zr0TZnGLPrG5 peXXP+8hh72fjnbEkwd9BzrEpCr6vymaFn7N/9/Uu0JMPuJDh8N/D+G8mY8mfWZ8wPkpgX1V yFMDZfEmu68lZQbRSizFGYmGWsxFxYkAUNt5pYYCAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrMIsWRmVeSWpSXmKPExsVy+t9jQd2jv/8HGBzfw23xdm8nuwOjx9k7 OxgDGKMaGG0yUhNTUosUUvOS81My89JtlbyD453jTc0MDHUNLS3MlRTyEnNTbZVcfAJ03TJz gMYqKZQl5pQChQISi4uV9O0wTQgNcdO1gGmM0PUNCYLrMTJAAwlrGDMW7tvCXHBKrWLaj072 BsYb8l2MnBwSAiYSm7aeZIawxSQu3FvP1sXIxSEkMJ1R4tfTnVDOMiaJKydWsoJUsQnoSGxf 8p0dxBYRkJD41X+VEcRmFnCRWHfzGpgtLOAgcafjF1g9i4CqxL9ts8HivALOEhsnXoLaJifx Yc8jsDmcQL3T+j6xgNhCQDUPfz9km8DIu4CRYRWjaGpBckFxUnquoV5xYm5xaV66XnJ+7iZG cJA/k9rBuLLB4hCjAAejEg9vwrN/AUKsiWXFlbmHGCU4mJVEeGWf/g8Q4k1JrKxKLcqPLyrN SS0+xJgMdNVEZinR5HxgBOaVxBsam5ibGptamliYmFmSJqwkzst46kmAkEB6YklqdmpqQWoR zBYmDk6pBkYGvQd/9jyNuCHMk3/2M98T3diXliq7xKfwMFip//+gaOzicEbdd9/HC8nXegKd +mSvaszUlAx0SdrO5CG1dUev3wOhx136z3//Wu37Ovv1nA+clpcOXZP3Nu9hb269fTdCZfee LUu2NCc3HpSvv3z+vGnaLq45p/Q/zwv1Vr3bHtZtE/d6va4SS3FGoqEWc1FxIgAGh0f8tgIA AA== DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Subject: [U-Boot] [PATCH 3/9 v6] EXYNOS5: FDT: Add TMU device node values X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.11 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: u-boot-bounces@lists.denx.de Errors-To: u-boot-bounces@lists.denx.de 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 Acked-by: Simon Glass --- Changes since v5: - Added Acked-by. - Changed size from 0xffff to 0x10000. - Removed tmu_mux entry from TMU node since it is no more required. - Changed TMU node entry descriptions and added units to them. arch/arm/dts/exynos5250.dtsi | 5 ++++ board/samsung/dts/exynos5250-smdk5250.dts | 12 ++++++++ doc/device-tree-bindings/exynos/tmu.txt | 46 +++++++++++++++++++++++++++++ include/fdtdec.h | 1 + lib/fdtdec.c | 1 + 5 files changed, 65 insertions(+) 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 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..96c2598 --- /dev/null +++ b/doc/device-tree-bindings/exynos/tmu.txt @@ -0,0 +1,46 @@ +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 +Practice : Universal Serial Bus" with the following modifications +and additions: + +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 f77d195..058fb51 100644 --- a/include/fdtdec.h +++ b/include/fdtdec.h @@ -79,6 +79,7 @@ enum fdt_compat_id { COMPAT_SAMSUNG_EXYNOS_EHCI, /* Exynos EHCI controller */ COMPAT_SAMSUNG_EXYNOS_USB_PHY, /* Exynos phy controller for usb2.0 */ COMPAT_MAXIM_MAX77686_PMIC, /* MAX77686 PMIC */ + COMPAT_SAMSUNG_EXYNOS_TMU, /* Exynos TMU */ COMPAT_COUNT, }; diff --git a/lib/fdtdec.c b/lib/fdtdec.c index 16921e1..4613fcd 100644 --- a/lib/fdtdec.c +++ b/lib/fdtdec.c @@ -54,6 +54,7 @@ static const char * const compat_names[COMPAT_COUNT] = { COMPAT(SAMSUNG_EXYNOS_EHCI, "samsung,exynos-ehci"), COMPAT(SAMSUNG_EXYNOS_USB_PHY, "samsung,exynos-usb-phy"), COMPAT(MAXIM_MAX77686_PMIC, "maxim,max77686_pmic"), + COMPAT(SAMSUNG_EXYNOS_TMU, "samsung,exynos-tmu"), }; const char *fdtdec_get_compatible(enum fdt_compat_id id)