This patch is to open a discussion about wrong order of tmu_cpu.
It seems that tmu_cpu1 correspond to cpu3, and tmu_cpu3 match cpu1.
Note, cpu{0|3} in dtsi correspond to cpu{3|7} in linux and are the big
cores.
By dependencis from exynos5422-odroidxu3-common.dtsi to
exynos5800.dtsi -> exynos5420.dtsi, I guess definitions of tmu_cpuX are
incorrect. However, changing the address, reg interrupts or clocks
would breack other boards depending on it. As I can't test other boards,
I've just overload the reference in the thermal-zones node.
To reproduce the problem, I provide two scripts:
== script_stress:
for i in 0 10 20 40 80; do
echo $i
taskset $i stress -t 10 -c 1
done;
== script_read_temp:
while true; do
for i in 0 1 2 3 4; do
echo $i
cat /sys/devices/virtual/thermal/thermal_zone$i/temp
done;
sleep 1
clear
done;
Signed-off-by: Willy Wolff <willy.mh.wolff@xxxxxxxxx>
---
arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
index 96e281c0a118..4512ffad2785 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3-common.dtsi
@@ -135,7 +135,8 @@
};
};
cpu1_thermal: cpu1-thermal {
- thermal-sensors = <&tmu_cpu1 0>;
+ // thermal-sensors = <&tmu_cpu1 0>;
+ thermal-sensors = <&tmu_cpu3 0>;
polling-delay-passive = <250>;
polling-delay = <0>;
trips {
@@ -269,7 +270,8 @@
};
};
cpu3_thermal: cpu3-thermal {
- thermal-sensors = <&tmu_cpu3 0>;
+ // thermal-sensors = <&tmu_cpu3 0>;
+ thermal-sensors = <&tmu_cpu1 0>;
polling-delay-passive = <250>;
polling-delay = <0>;
trips {
--
2.11.0
