| Message ID | 1414057207-1576-4-git-send-email-caesar.wang@rock-chips.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Hi Caesar, On Thu, Oct 23, 2014 at 05:40:05PM +0800, Caesar Wang wrote: > This patch changes a dtsi file to contain the thermal data > on RK3288 and later SoCs. This data will > enable a thermal shutdown over 125C. > > Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> > --- > arch/arm/boot/dts/rk3288-thermal.dtsi | 65 +++++++++++++++++++++++++++++++++++ > 1 file changed, 65 insertions(+) > create mode 100644 arch/arm/boot/dts/rk3288-thermal.dtsi > > diff --git a/arch/arm/boot/dts/rk3288-thermal.dtsi b/arch/arm/boot/dts/rk3288-thermal.dtsi > new file mode 100644 > index 0000000..c361262 > --- /dev/null > +++ b/arch/arm/boot/dts/rk3288-thermal.dtsi > @@ -0,0 +1,65 @@ > +/* > + * Device Tree Source for RK3288 SoC thermal > + * > + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd > + * > + * 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> > + > +reserve_thermal: reserve_thermal { > + polling-delay-passive = <500>; /* milliseconds */ > + polling-delay = <1000>; /* milliseconds */ > + > + /* sensor ID */ > + thermal-sensors = <&tsadc 0>; > + > +}; > + > +cpu_thermal: cpu_thermal { > + polling-delay-passive = <500>; /* milliseconds */ > + polling-delay = <1000>; /* milliseconds */ Given that the hardware supports alarm interrupts I think we should be able to lower polling frequency. I'd say 5 seconds for polling-delay and 1 second for when we trip over passive point? Thanks.
diff --git a/arch/arm/boot/dts/rk3288-thermal.dtsi b/arch/arm/boot/dts/rk3288-thermal.dtsi new file mode 100644 index 0000000..c361262 --- /dev/null +++ b/arch/arm/boot/dts/rk3288-thermal.dtsi @@ -0,0 +1,65 @@ +/* + * Device Tree Source for RK3288 SoC thermal + * + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd + * + * 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> + +reserve_thermal: reserve_thermal { + polling-delay-passive = <500>; /* milliseconds */ + polling-delay = <1000>; /* milliseconds */ + + /* sensor ID */ + thermal-sensors = <&tsadc 0>; + +}; + +cpu_thermal: cpu_thermal { + polling-delay-passive = <500>; /* milliseconds */ + polling-delay = <1000>; /* milliseconds */ + + /* sensor ID */ + thermal-sensors = <&tsadc 1>; + + trips { + cpu_alert0: cpu_alert0 { + temperature = <80000>; /* 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>; + }; + }; +}; + +gpu_thermal: gpu_thermal { + polling-delay-passive = <500>; /* milliseconds */ + polling-delay = <1000>; /* milliseconds */ + + /* sensor ID */ + thermal-sensors = <&tsadc 2>; + + trips { + gpu_crit: gpu_crit { + temperature = <125000>; /* millicelsius */ + hysteresis = <2000>; /* millicelsius */ + type = "critical"; + }; + }; +};
This patch changes a dtsi file to contain the thermal data on RK3288 and later SoCs. This data will enable a thermal shutdown over 125C. Signed-off-by: Caesar Wang <caesar.wang@rock-chips.com> --- arch/arm/boot/dts/rk3288-thermal.dtsi | 65 +++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 arch/arm/boot/dts/rk3288-thermal.dtsi