[5/8] arm: dts: add omap4430 thermal data

Submitted by Eduardo Valentin on July 17, 2013, 3:02 p.m.

Details

Message ID 1374073374-30946-11-git-send-email-eduardo.valentin@ti.com
State New
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Commit Message

Eduardo Valentin July 17, 2013, 3:02 p.m.
This patch changes the dtsi entry on omap4430 to contain
the thermal data. This data will enable the passive
cooling with CPUfreq cooling device at 100C and the
system will do a thermal shutdown at 125C.

Cc: "BenoƮt Cousson" <b-cousson@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-omap@vger.kernel.org
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
---
 arch/arm/boot/dts/omap443x.dtsi | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

Patch hide | download patch | download mbox

diff --git a/arch/arm/boot/dts/omap443x.dtsi b/arch/arm/boot/dts/omap443x.dtsi
index bcf455e..c9a1c89 100644
--- a/arch/arm/boot/dts/omap443x.dtsi
+++ b/arch/arm/boot/dts/omap443x.dtsi
@@ -8,6 +8,7 @@ 
  * kind, whether express or implied.
  */
 
+#include <dt-bindings/thermal/thermal.h>
 #include "omap4.dtsi"
 
 / {
@@ -26,8 +27,34 @@ 
 	};
 
 	bandgap {
-		reg = <0x4a002260 0x4
-		       0x4a00232C 0x4>;
+		reg = <0x4a002260 0x4 0x4a00232C 0x4>;
 		compatible = "ti,omap4430-bandgap";
+		thermal_zone {
+			type = "CPU";
+			mask = <0x03>; /* trips writability */
+			passive_delay = <250>; /* milliseconds */
+			polling_delay = <1000>; /* milliseconds */
+			governor = "step_wise";
+			trips {
+				alert@100000{
+					temperature = <100000>; /* milliCelsius */
+					hysteresis = <2000>; /* milliCelsius */
+					type = <THERMAL_TRIP_PASSIVE>;
+				};
+				crit@125000{
+					temperature = <125000>; /* milliCelsius */
+					hysteresis = <2000>; /* milliCelsius */
+					type = <THERMAL_TRIP_CRITICAL>;
+				};
+			};
+			bind_params {
+				action@0{
+					cooling_device = "thermal-cpufreq";
+					weight = <100>; /* percentage */
+					mask = <0x01>;
+					/* no limits, using defaults */
+				};
+			};
+		};
 	};
 };