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Subject[PATCH v2] ARM: dts: exynos: fix incomplete Odroid-XU3/4 thermal-zones definition
Date
From: Willy Wolff <willy.mh.wolff@gmail.com>

Odroid XU3/4 boards have thermal sensors per 4 pairs of A7+A15
cores but currently there is only one thermal-zone (including
cooling maps) defined (for the first pair of cores - the first
core of the A7 cluster and the first core of A15 cluster) so
i.e. if the task is running on any of A15 cores but the first
one, such core can reach high temperature without any proper
cooling action.

Fix it by adding missing thermal-zones definitions.

Also while at it fix the number of steps in cpufreq cooling for
cpu4 (11 steps for A15 corresponds to 700MHz, for 600MHz 12 steps
should be used).

Signed-off-by: Willy Wolff <willy.mh.wolff@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Kukjin Kim <kgene@kernel.org>
[b.zolnierkie: rewrote patch subject & description + minor fixups]
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
---
v2:

Newlines removed (1 original + 3 new ones), sorry for not catching it
earlier in v1.

v1:

I updated the patch to address Krzysztof's review comments,
the original version from June can be found here:

https://patchwork.kernel.org/patch/9807333/

arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 239 +++++++++++++++++++--
1 file changed, 219 insertions(+), 20 deletions(-)

Index: b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
===================================================================
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi 2017-09-07 17:56:29.256414483 +0200
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi 2017-09-07 18:04:40.596426857 +0200
@@ -63,22 +63,22 @@
polling-delay-passive = <250>;
polling-delay = <0>;
trips {
- cpu_alert0: cpu-alert-0 {
+ cpu0_alert0: cpu-alert-0 {
temperature = <50000>; /* millicelsius */
hysteresis = <5000>; /* millicelsius */
type = "active";
};
- cpu_alert1: cpu-alert-1 {
+ cpu0_alert1: cpu-alert-1 {
temperature = <60000>; /* millicelsius */
hysteresis = <5000>; /* millicelsius */
type = "active";
};
- cpu_alert2: cpu-alert-2 {
+ cpu0_alert2: cpu-alert-2 {
temperature = <70000>; /* millicelsius */
hysteresis = <5000>; /* millicelsius */
type = "active";
};
- cpu_crit0: cpu-crit-0 {
+ cpu0_crit0: cpu-crit-0 {
temperature = <120000>; /* millicelsius */
hysteresis = <0>; /* millicelsius */
type = "critical";
@@ -87,59 +87,258 @@
* Exynos542x supports only 4 trip-points
* so for these polling mode is required.
* Start polling at temperature level of last
- * interrupt-driven trip: cpu_alert2
+ * interrupt-driven trip: cpu0_alert2
*/
- cpu_alert3: cpu-alert-3 {
+ cpu0_alert3: cpu-alert-3 {
temperature = <70000>; /* millicelsius */
hysteresis = <10000>; /* millicelsius */
type = "passive";
};
- cpu_alert4: cpu-alert-4 {
+ cpu0_alert4: cpu-alert-4 {
temperature = <85000>; /* millicelsius */
hysteresis = <10000>; /* millicelsius */
type = "passive";
};
-
};
cooling-maps {
map0 {
- trip = <&cpu_alert0>;
+ trip = <&cpu0_alert0>;
cooling-device = <&fan0 0 1>;
};
map1 {
- trip = <&cpu_alert1>;
+ trip = <&cpu0_alert1>;
cooling-device = <&fan0 1 2>;
};
map2 {
- trip = <&cpu_alert2>;
+ trip = <&cpu0_alert2>;
cooling-device = <&fan0 2 3>;
};
/*
- * When reaching cpu_alert3, reduce CPU
+ * When reaching cpu0_alert3, reduce CPU
* by 2 steps. On Exynos5422/5800 that would
* be: 1600 MHz and 1100 MHz.
*/
map3 {
- trip = <&cpu_alert3>;
+ trip = <&cpu0_alert3>;
cooling-device = <&cpu0 0 2>;
};
map4 {
- trip = <&cpu_alert3>;
+ trip = <&cpu0_alert3>;
cooling-device = <&cpu4 0 2>;
};
-
/*
- * When reaching cpu_alert4, reduce CPU
- * further, down to 600 MHz (11 steps for big,
+ * When reaching cpu0_alert4, reduce CPU
+ * further, down to 600 MHz (12 steps for big,
* 7 steps for LITTLE).
*/
map5 {
- trip = <&cpu_alert4>;
+ trip = <&cpu0_alert4>;
cooling-device = <&cpu0 3 7>;
};
map6 {
- trip = <&cpu_alert4>;
- cooling-device = <&cpu4 3 11>;
+ trip = <&cpu0_alert4>;
+ cooling-device = <&cpu4 3 12>;
+ };
+ };
+ };
+ cpu1_thermal: cpu1-thermal {
+ thermal-sensors = <&tmu_cpu1 0>;
+ polling-delay-passive = <250>;
+ polling-delay = <0>;
+ trips {
+ cpu1_alert0: cpu-alert-0 {
+ temperature = <50000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu1_alert1: cpu-alert-1 {
+ temperature = <60000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu1_alert2: cpu-alert-2 {
+ temperature = <70000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu1_crit0: cpu-crit-0 {
+ temperature = <120000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ cpu1_alert3: cpu-alert-3 {
+ temperature = <70000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ cpu1_alert4: cpu-alert-4 {
+ temperature = <85000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu1_alert0>;
+ cooling-device = <&fan0 0 1>;
+ };
+ map1 {
+ trip = <&cpu1_alert1>;
+ cooling-device = <&fan0 1 2>;
+ };
+ map2 {
+ trip = <&cpu1_alert2>;
+ cooling-device = <&fan0 2 3>;
+ };
+ map3 {
+ trip = <&cpu1_alert3>;
+ cooling-device = <&cpu0 0 2>;
+ };
+ map4 {
+ trip = <&cpu1_alert3>;
+ cooling-device = <&cpu4 0 2>;
+ };
+ map5 {
+ trip = <&cpu1_alert4>;
+ cooling-device = <&cpu0 3 7>;
+ };
+ map6 {
+ trip = <&cpu1_alert4>;
+ cooling-device = <&cpu4 3 12>;
+ };
+ };
+ };
+ cpu2_thermal: cpu2-thermal {
+ thermal-sensors = <&tmu_cpu2 0>;
+ polling-delay-passive = <250>;
+ polling-delay = <0>;
+ trips {
+ cpu2_alert0: cpu-alert-0 {
+ temperature = <50000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu2_alert1: cpu-alert-1 {
+ temperature = <60000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu2_alert2: cpu-alert-2 {
+ temperature = <70000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu2_crit0: cpu-crit-0 {
+ temperature = <120000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ cpu2_alert3: cpu-alert-3 {
+ temperature = <70000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ cpu2_alert4: cpu-alert-4 {
+ temperature = <85000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu2_alert0>;
+ cooling-device = <&fan0 0 1>;
+ };
+ map1 {
+ trip = <&cpu2_alert1>;
+ cooling-device = <&fan0 1 2>;
+ };
+ map2 {
+ trip = <&cpu2_alert2>;
+ cooling-device = <&fan0 2 3>;
+ };
+ map3 {
+ trip = <&cpu2_alert3>;
+ cooling-device = <&cpu0 0 2>;
+ };
+ map4 {
+ trip = <&cpu2_alert3>;
+ cooling-device = <&cpu4 0 2>;
+ };
+ map5 {
+ trip = <&cpu2_alert4>;
+ cooling-device = <&cpu0 3 7>;
+ };
+ map6 {
+ trip = <&cpu2_alert4>;
+ cooling-device = <&cpu4 3 12>;
+ };
+ };
+ };
+ cpu3_thermal: cpu3-thermal {
+ thermal-sensors = <&tmu_cpu3 0>;
+ polling-delay-passive = <250>;
+ polling-delay = <0>;
+ trips {
+ cpu3_alert0: cpu-alert-0 {
+ temperature = <50000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu3_alert1: cpu-alert-1 {
+ temperature = <60000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu3_alert2: cpu-alert-2 {
+ temperature = <70000>;
+ hysteresis = <5000>;
+ type = "active";
+ };
+ cpu3_crit0: cpu-crit-0 {
+ temperature = <120000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ cpu3_alert3: cpu-alert-3 {
+ temperature = <70000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ cpu3_alert4: cpu-alert-4 {
+ temperature = <85000>;
+ hysteresis = <10000>;
+ type = "passive";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&cpu3_alert0>;
+ cooling-device = <&fan0 0 1>;
+ };
+ map1 {
+ trip = <&cpu3_alert1>;
+ cooling-device = <&fan0 1 2>;
+ };
+ map2 {
+ trip = <&cpu3_alert2>;
+ cooling-device = <&fan0 2 3>;
+ };
+ map3 {
+ trip = <&cpu3_alert3>;
+ cooling-device = <&cpu0 0 2>;
+ };
+ map4 {
+ trip = <&cpu3_alert3>;
+ cooling-device = <&cpu4 0 2>;
+ };
+ map5 {
+ trip = <&cpu3_alert4>;
+ cooling-device = <&cpu0 3 7>;
+ };
+ map6 {
+ trip = <&cpu3_alert4>;
+ cooling-device = <&cpu4 3 12>;
};
};
};
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