[PATCH 09/19] arm: dts: add omap4 CPU thermal data
From: Alex Shi <hidden>
Date: 2014-03-25 10:50:52
Also in:
linux-devicetree, linux-omap, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
From: Eduardo Valentin <redacted> This patch changes a dtsi file to contain the thermal data for MPU domain on OMAP4 and later SoCs. This data will enable the passive cooling with CPUfreq cooling device at 100C and the system will do a thermal shutdown at 125C. This thermal data can be reused across TI SoC devices. Cc: "Beno?t Cousson" <redacted> Cc: Tony Lindgren <tony@atomide.com> Cc: Rob Herring <redacted> Cc: Pawel Moll <redacted> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <redacted> Cc: Ian Campbell <redacted> Cc: Russell King <redacted> Cc: linux-omap at vger.kernel.org Cc: devicetree at vger.kernel.org Cc: linux-arm-kernel at lists.infradead.org Cc: linux-kernel at vger.kernel.org Signed-off-by: Eduardo Valentin <redacted> (cherry picked from commit 0bbf6c54d100836db40ba020b7c9793ea3e6be0b) Signed-off-by: Alex Shi <redacted> --- arch/arm/boot/dts/omap4-cpu-thermal.dtsi | 41 ++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 arch/arm/boot/dts/omap4-cpu-thermal.dtsi
diff --git a/arch/arm/boot/dts/omap4-cpu-thermal.dtsi b/arch/arm/boot/dts/omap4-cpu-thermal.dtsi
new file mode 100644
index 0000000..cb9458f
--- /dev/null
+++ b/arch/arm/boot/dts/omap4-cpu-thermal.dtsi@@ -0,0 +1,41 @@ +/* + * Device Tree Source for OMAP4/5 SoC CPU thermal + * + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ + * Contact: Eduardo Valentin <eduardo.valentin@ti.com> + * + * This file is licensed under the terms of the GNU General Public License + * version 2. This program is licensed "as is" without any warranty of any + * kind, whether express or implied. + */ + +#include <dt-bindings/thermal/thermal.h> + +cpu_thermal: cpu_thermal { + polling-delay-passive = <250>; /* milliseconds */ + polling-delay = <1000>; /* milliseconds */ + + /* sensor ID */ + thermal-sensors = <&bandgap 0>; + + trips { + cpu_alert0: cpu_alert { + temperature = <100000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "passive"; + }; + cpu_crit: cpu_crit { + temperature = <125000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = + <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; +};
--
1.8.1.2