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Mon, 28 Jan 2013 20:05:29 +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 <0MHC00NG91GO5500@mmp2.samsung.com> for u-boot@lists.denx.de; Mon, 28 Jan 2013 20:05:28 +0900 (KST) From: Akshay Saraswat To: u-boot@lists.denx.de Date: Mon, 28 Jan 2013 06:26:39 -0500 Message-id: <1359372405-17518-4-git-send-email-akshay.s@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1359372405-17518-1-git-send-email-akshay.s@samsung.com> References: <1359372405-17518-1-git-send-email-akshay.s@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrMLMWRmVeSWpSXmKPExsWyRsSkVrcymi3Q4PMJUYu3ezvZHRg9zt7Z wRjAGMVlk5Kak1mWWqRvl8CVsf/3OcaCCaoVL+ZMYmtgPCLXxcjJISFgItE/5zwrhC0mceHe erYuRi4OIYGljBJda1+ywRR1Hv7LDpGYzihxtP8+E0hCSGAZk0TvJx4Qm01AR2L7ku/sILaI gITEr/6rjCA2s4CLxLqb18BsYQEHibuPz4ANZRFQlbg7/RsLiM0LVPP9zTeoK+QkPux5BDaH U8BVYl7DR3aIXS4Sn07tYwU5QkLgOpvE6ssnmSAGCUh8m3wIaBAHUEJWYtMBZog5khIHV9xg mcAovICRYRWjaGpBckFxUnqukV5xYm5xaV66XnJ+7iZGYBCe/vdMegfjqgaLQ4wCHIxKPLw/ 0lgChVgTy4orcw8xSnAwK4nw7gxlCxTiTUmsrEotyo8vKs1JLT7EmAy0fCKzlGhyPjBC8kri DY1NzE2NTS2NjMxMTUkTVhLnZTz1JEBIID2xJDU7NbUgtQhmCxMHp1QDY+wLsUsHFl/ikRRj 3fr2suBnxxszoibnGndkWcw7m3RR2VjK/KhbYM7u+3/Cr3/dxLT+pU+Syf/Vza/O1jdenxsj JXxA7rSO0XZe60NTbs5Rkq8SZErddd7QKtv8i0mtsbL1obV1DUH/vJhvnIidZri9pmmhGJfh hwo71eVlHSZMhy2Cr/8UVGIpzkg01GIuKk4EAJ7ZGraGAgAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrEIsWRmVeSWpSXmKPExsVy+t9jQd3KaLZAg11TGS3e7u1kd2D0OHtn B2MAY1QDo01GamJKapFCal5yfkpmXrqtkndwvHO8qZmBoa6hpYW5kkJeYm6qrZKLT4CuW2YO 0FglhbLEnFKgUEBicbGSvh2mCaEhbroWMI0Rur4hQXA9RgZoIGENY8b+3+cYCyaoVryYM4mt gfGIXBcjJ4eEgIlE5+G/7BC2mMSFe+vZuhi5OIQEpjNKHO2/zwSSEBJYxiTR+4kHxGYT0JHY vuQ7WIOIgITEr/6rjCA2s4CLxLqb18BsYQEHibuPz7CB2CwCqhJ3p39jAbF5gWq+v/nGCrFM TuLDnkdgczgFXCXmNXxkh9jlIvHp1D7WCYy8CxgZVjGKphYkFxQnpeca6RUn5haX5qXrJefn bmIEh/gz6R2MqxosDjEKcDAq8fD+SGMJFGJNLCuuzD3EKMHBrCTCuzOULVCINyWxsiq1KD++ qDQntfgQYzLQVROZpUST84Hxl1cSb2hsYm5qbGppYmFiZkmasJI4L+OpJwFCAumJJanZqakF qUUwW5g4OKUaGB02P5iyW23KRKZ9Ze4P3fvqIu6lMd2rDo13TRW9nLj527mG6d27J7v9Ypt0 2nBOcfJNpXNn0/51CPaZPEzmPvtrzv4Tr6oKdk4KfzDx0evTSz7G7u9zzFgnqtstz/zD9tzb C8/Lg6Ya/bPZPWsa900h6335v/+0PnGZsUL5wpSuiKD/V/is36YrsRRnJBpqMRcVJwIALB95 WLUCAAA= DLP-Filter: Pass X-MTR: 20000000000000000@CPGS X-CFilter-Loop: Reflected Subject: [U-Boot] [PATCH 3/9 v7] 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 v6: - None. 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)