On 03/20/2015 11:54 PM, Eduardo Valentin wrote:
On Fri, Mar 20, 2015 at 02:47:39PM -0500, Nishanth Menon wrote:
From: Tero Kristo <t-kristo@xxxxxx>
OMAP4 has a finer counter granularity, which allows for a delay of 1000ms
in the thermal zone polling intervals. OMAP5/DRA7 have different counter
mechanism, which allows at maximum a 500ms timer. Adjust the cpu thermal
zone accordingly for OMAP5/DRA7.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
Signed-off-by: Nishanth Menon <nm@xxxxxx>
---
arch/arm/boot/dts/omap5-cpu-thermal.dtsi | 41 ++++++++++++++++++++++++++++++
arch/arm/boot/dts/omap5.dtsi | 2 +-
2 files changed, 42 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/boot/dts/omap5-cpu-thermal.dtsi
diff --git a/arch/arm/boot/dts/omap5-cpu-thermal.dtsi b/arch/arm/boot/dts/omap5-cpu-thermal.dtsi
new file mode 100644
index 000000000000..4a6427c1e47e
--- /dev/null
+++ b/arch/arm/boot/dts/omap5-cpu-thermal.dtsi
@@ -0,0 +1,41 @@
+/*
+ * Device Tree Source for OMAP4/5 SoC CPU thermal
+ *
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ * Contact: Tero Kristo <t-kristo@xxxxxx>
+ *
+ * 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>
+
+cpu_thermal: cpu_thermal {
+ polling-delay-passive = <250>; /* milliseconds */
+ polling-delay = <500>; /* milliseconds */
+
+ /* sensor ID */
+ thermal-sensors = <&bandgap 0>;
+
+ cpu_trips: trips {
+ cpu_alert0: cpu_alert {
+ temperature = <100000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "passive";
+ };
+ cpu_crit: cpu_crit {
+ temperature = <125000>; /* millicelsius */
+ hysteresis = <2000>; /* millicelsius */
+ type = "critical";
+ };
+ };
+
+ cpu_cooling_maps: cooling-maps {
+ map0 {
+ trip = <&cpu_alert0>;
+ cooling-device =
+ <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+};
diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index ddff674bd05e..e650d4eb59dd 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -67,7 +67,7 @@
};
thermal-zones {
- #include "omap4-cpu-thermal.dtsi"
+ #include "omap5-cpu-thermal.dtsi"
Can't we simple change the polling value for the omap5 case and reuse
the omap4 file?
Hmm yea, I posted a patch like this before for o5 and it was queued
already. See:
http://thread.gmane.org/gmane.linux.ports.arm.omap/123729
The dra7 part was missing from this set though, so patches 2/3 do not
directly work with that one and will require some changes similar to the
linked omap4 one.
-Tero
#include "omap5-gpu-thermal.dtsi"
#include "omap5-core-thermal.dtsi"
};
--
1.7.9.5
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