[U-Boot] [PATCH 1/8 v2] EXYNOS5: FDT: Add TMU device node values
Hatim Ali
hatim.rv at samsung.com
Wed Nov 7 14:08:41 CET 2012
From: Akshay Saraswat <akshay.s at 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 at samsung.com>
Acked-by: Simon Glass <sjg at chromium.org>
---
Changes since v1:
- Added Acked-by: Simon Glass
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 at 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 at 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 at 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)
--
1.7.2.3
More information about the U-Boot
mailing list