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arm64: dts: ti: k3-am62: Enable CPU freq throttling on thermal alert

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Enable throttling down the CPU frequency when an alert temperature
threshold (lower than the critical threshold) is reached.

Signed-off-by: Alessandro Zini <alessandro.zini@siemens.com>
Link: https://lore.kernel.org/r/20240814214328.14155-1-alessandro.zini@siemens.com
Signed-off-by: Nishanth Menon <nm@ti.com>
This commit is contained in:
Alessandro Zini 2024-08-14 23:43:28 +02:00 committed by Nishanth Menon
parent 67d820656f
commit 10e7bfd811
2 changed files with 38 additions and 0 deletions
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34
arch/arm64/boot/dts/ti/k3-am62-thermal.dtsi
View File

@ -12,12 +12,29 @@ main0_thermal: main0-thermal {
thermal-sensors = <&wkup_vtm0 0>;
trips {
main0_alert: main0-alert {
temperature = <95000>;
hysteresis = <2000>;
type = "passive";
};
main0_crit: main0-crit {
temperature = <105000>; /* milliCelsius */
hysteresis = <2000>; /* milliCelsius */
type = "critical";
};
};
cooling-maps {
map0 {
trip = <&main0_alert>;
cooling-device =
<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};
main1_thermal: main1-thermal {
@ -26,11 +43,28 @@ main1_thermal: main1-thermal {
thermal-sensors = <&wkup_vtm0 1>;
trips {
main1_alert: main1-alert {
temperature = <95000>;
hysteresis = <2000>;
type = "passive";
};
main1_crit: main1-crit {
temperature = <105000>; /* milliCelsius */
hysteresis = <2000>; /* milliCelsius */
type = "critical";
};
};
cooling-maps {
map0 {
trip = <&main1_alert>;
cooling-device =
<&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
<&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
};
};
};
};

4
arch/arm64/boot/dts/ti/k3-am625.dtsi
View File

@ -50,6 +50,7 @@ cpu0: cpu@0 {
next-level-cache = <&L2_0>;
operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 135 0>;
#cooling-cells = <2>;
};
cpu1: cpu@1 {
@ -66,6 +67,7 @@ cpu1: cpu@1 {
next-level-cache = <&L2_0>;
operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 136 0>;
#cooling-cells = <2>;
};
cpu2: cpu@2 {
@ -82,6 +84,7 @@ cpu2: cpu@2 {
next-level-cache = <&L2_0>;
operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 137 0>;
#cooling-cells = <2>;
};
cpu3: cpu@3 {
@ -98,6 +101,7 @@ cpu3: cpu@3 {
next-level-cache = <&L2_0>;
operating-points-v2 = <&a53_opp_table>;
clocks = <&k3_clks 138 0>;
#cooling-cells = <2>;
};
};