From mboxrd@z Thu Jan 1 00:00:00 1970 From: dmitry.torokhov@gmail.com (Dmitry Torokhov) Date: Thu, 23 Oct 2014 17:48:11 -0700 Subject: [PATCH v13 3/5] ARM: dts: add RK3288 Thermal data In-Reply-To: <1414057207-1576-4-git-send-email-caesar.wang@rock-chips.com> References: <1414057207-1576-1-git-send-email-caesar.wang@rock-chips.com> <1414057207-1576-4-git-send-email-caesar.wang@rock-chips.com> Message-ID: <20141024004811.GE9463@dtor-ws> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 > --- > 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 > + > +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. -- Dmitry