Re: [PATCH v2 7/9] arm64: dts: Add the thermal data found on RK3368

Eduardo Valentin
2015-11-06T19:14:56Z

On Thu, Nov 05, 2015 at 01:18:03PM +0800, Caesar Wang wrote:
> This patchset add the thermal for RK3368 dts,
> Since the two CPU clusters, with four CPU core for each cluster,
> One cluster is optimized for high-performance(big cluster) and the othe
> is optimized for low power(little cluster).
>
> This patch adds the second order for thermal throttle, and the critical
> temperature for thermal over-tempeature protection on Software.
>
> Signed-off-by: Caesar Wang <wxt@rock-chips.com>

Acked-by: Eduardo Valentin <edubezval@gmail.com>

> ---
>
> Changes in v2: None
> Changes in v1: None
>
> arch/arm64/boot/dts/rockchip/rk3368-thermal.dtsi | 112 +++++++++++++++++++++++
> 1 file changed, 112 insertions(+)
> create mode 100644 arch/arm64/boot/dts/rockchip/rk3368-thermal.dtsi
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3368-thermal.dtsi b/arch/arm64/boot/dts/rockchip/rk3368-thermal.dtsi
> new file mode 100644
> index 0000000..a10010f
> --- /dev/null
> +++ b/arch/arm64/boot/dts/rockchip/rk3368-thermal.dtsi
> @@ -0,0 +1,112 @@
> +/*
> + * Device Tree Source for RK3368 SoC thermal
> + *
> + * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
> + * Caesar Wang <wxt@rock-chips.com>
> + *
> + * This file is dual-licensed: you can use it either under the terms
> + * of the GPL or the X11 license, at your option. Note that this dual
> + * licensing only applies to this file, and not this project as a
> + * whole.
> + *
> + * a) This file is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU General Public License as
> + * published by the Free Software Foundation; either version 2 of the
> + * License, or (at your option) any later version.
> + *
> + * This file is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + * Or, alternatively,
> + *
> + * b) Permission is hereby granted, free of charge, to any person
> + * obtaining a copy of this software and associated documentation
> + * files (the "Software"), to deal in the Software without
> + * restriction, including without limitation the rights to use,
> + * copy, modify, merge, publish, distribute, sublicense, and/or
> + * sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following
> + * conditions:
> + *
> + * The above copyright notice and this permission notice shall be
> + * included in all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
> + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
> + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
> + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + */
> +
> +#include <dt-bindings/thermal/thermal.h>
> +
> +cpu_thermal: cpu_thermal {
> + polling-delay-passive = <100>; /* milliseconds */
> + polling-delay = <5000>; /* milliseconds */
> +
> + thermal-sensors = <&tsadc 0>;
> +
> + trips {
> + cpu_alert0: cpu_alert0 {
> + temperature = <75000>; /* millicelsius */
> + hysteresis = <2000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu_alert1: cpu_alert1 {
> + temperature = <80000>; /* millicelsius */
> + hysteresis = <2000>; /* millicelsius */
> + type = "passive";
> + };
> + cpu_crit: cpu_crit {
> + temperature = <95000>; /* millicelsius */
> + hysteresis = <2000>; /* millicelsius */
> + type = "critical";
> + };
> + };
> +
> + cooling-maps {
> + map0 {
> + trip = <&cpu_alert0>;
> + cooling-device =
> + <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + map1 {
> + trip = <&cpu_alert1>;
> + cooling-device =
> + <&cpu_l0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> +};
> +
> +gpu_thermal: gpu_thermal {
> + polling-delay-passive = <100>; /* milliseconds */
> + polling-delay = <5000>; /* milliseconds */
> +
> + thermal-sensors = <&tsadc 1>;
> +
> + trips {
> + gpu_alert0: gpu_alert0 {
> + temperature = <80000>; /* millicelsius */
> + hysteresis = <2000>; /* millicelsius */
> + type = "passive";
> + };
> + gpu_crit: gpu_crit {
> + temperature = <1150000>; /* millicelsius */
> + hysteresis = <2000>; /* millicelsius */
> + type = "critical";
> + };
> + };
> +
> + cooling-maps {
> + map0 {
> + trip = <&gpu_alert0>;
> + cooling-device =
> + <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> + };
> + };
> +};
> --
> 1.9.1
>