[PATCH v3 6/9] ARM: dts: sun5i: Add cpu thermal zones to dtsi - Chen-Yu Tsai

From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime.ripard@free-electrons.com>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Zhang Rui <rui.zhang@intel.com>,
	Eduardo Valentin <edubezval@gmail.com>
Cc: Chen-Yu Tsai <wens@csie.org>, Hans de Goede <hdegoede@redhat.com>,
	linux-input@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org
Subject: [PATCH v3 6/9] ARM: dts: sun5i: Add cpu thermal zones to dtsi
Date: Mon, 12 Jan 2015 12:34:06 +0800	[thread overview]
Message-ID: <1421037249-28461-7-git-send-email-wens@csie.org> (raw)
In-Reply-To: <1421037249-28461-1-git-send-email-wens@csie.org>

The core temperature sensor now supports thermal zones. Add a thermal
zone mapping for the cpus with passive cooling (cpufreq throttling).

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Eduardo Valentin <edubezval@gmail.com>
---

changes since v2:

    - Added Acked-by from Eduardo

changes since v1:

    - Use thermal dt bindings macros in cooling-device

---
 arch/arm/boot/dts/sun5i-a13.dtsi | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm/boot/dts/sun5i-a13.dtsi b/arch/arm/boot/dts/sun5i-a13.dtsi
index dee2aa5bc9ed..c26f58ea0850 100644
--- a/arch/arm/boot/dts/sun5i-a13.dtsi
+++ b/arch/arm/boot/dts/sun5i-a13.dtsi
@@ -13,6 +13,8 @@
 
 #include "skeleton.dtsi"
 
+#include <dt-bindings/thermal/thermal.h>
+
 #include <dt-bindings/dma/sun4i-a10.h>
 #include <dt-bindings/pinctrl/sun4i-a10.h>
 
@@ -50,6 +52,38 @@
 		};
 	};
 
+	thermal-zones {
+		cpu_thermal {
+			/* milliseconds */
+			polling-delay-passive = <250>;
+			polling-delay = <1000>;
+			thermal-sensors = <&rtp>;
+
+			cooling-maps {
+				map0 {
+					trip = <&cpu_alert0>;
+					cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+				};
+			};
+
+			trips {
+				cpu_alert0: cpu_alert0 {
+					/* milliCelsius */
+					temperature = <850000>;
+					hysteresis = <2000>;
+					type = "passive";
+				};
+
+				cpu_crit: cpu_crit {
+					/* milliCelsius */
+					temperature = <100000>;
+					hysteresis = <2000>;
+					type = "critical";
+				};
+			};
+		};
+	};
+
 	memory {
 		reg = <0x40000000 0x20000000>;
 	};
-- 
2.1.4

