[PATCH v6 5/9] arm64: dts: qcom: kodiak: Enable CDSP & Modem cooling
From: Gaurav Kohli
Date: Mon Jul 27 2026 - 10:39:41 EST
Unlike the CPU, the CDSP/Modem does not throttle its speed automatically
when it reaches high temperatures in kodiak.
Set up CDSP cooling by throttling the cdsp when it reaches 100°C and
for modem when it reaches to 95°C.
Add polling-delay-passive so the governor periodically evaluates
the zone during passive cooling and steps up cooling levels when
temperature stabilizes below the next trip.
Since the remoteproc_mpss node doesn't exist on non modem boards, the
cooling-maps that reference it cause DT compilation errors. To fix that
remove inherited mdmss cooling-map nodes.
Signed-off-by: Gaurav Kohli <gaurav.kohli@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/kodiak.dtsi | 125 +++++++++++++++++++++
.../boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts | 8 ++
.../dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts | 8 ++
.../boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts | 8 ++
.../boot/dts/qcom/qcs6490-vicharak-axon-mini.dts | 8 ++
.../boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi | 10 ++
.../boot/dts/qcom/sc7280-herobrine-wifi-sku.dtsi | 9 ++
7 files changed, 176 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
index 7e73348fe0d0..53dcc5ebacd3 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -30,6 +30,7 @@
#include <dt-bindings/sound/qcom,lpass.h>
#include <dt-bindings/sound/qcom,q6afe.h>
#include <dt-bindings/sound/qcom,q6asm.h>
+#include <dt-bindings/thermal/qcom,pas.h>
#include <dt-bindings/thermal/thermal.h>
/ {
@@ -3431,6 +3432,8 @@ remoteproc_mpss: remoteproc@4080000 {
qcom,smem-states = <&modem_smp2p_out 0>;
qcom,smem-state-names = "stop";
+ #cooling-cells = <3>;
+
status = "disabled";
glink-edge {
@@ -4803,6 +4806,8 @@ remoteproc_cdsp: remoteproc@a300000 {
qcom,smem-states = <&cdsp_smp2p_out 0>;
qcom,smem-state-names = "stop";
+ #cooling-cells = <3>;
+
status = "disabled";
glink-edge {
@@ -7732,6 +7737,8 @@ map0 {
};
nspss0-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 3>;
trips {
@@ -7741,15 +7748,31 @@ nspss0_alert0: trip-point0 {
type = "hot";
};
+ nspss0_alert1: trip-point1 {
+ temperature = <100000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
nspss0_crit: nspss0-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&nspss0_alert1>;
+ cooling-device = <&remoteproc_cdsp QCOM_TMD_CDSP_SW
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
nspss1-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 4>;
trips {
@@ -7759,12 +7782,26 @@ nspss1_alert0: trip-point0 {
type = "hot";
};
+ nspss1_alert1: trip-point1 {
+ temperature = <100000>;
+ hysteresis = <5000>;
+ type = "passive";
+ };
+
nspss1_crit: nspss1-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ map0 {
+ trip = <&nspss1_alert1>;
+ cooling-device = <&remoteproc_cdsp QCOM_TMD_CDSP_SW
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
video-thermal {
@@ -7804,6 +7841,8 @@ ddr_crit: ddr-crit {
};
mdmss0-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 7>;
trips {
@@ -7813,15 +7852,37 @@ mdmss0_alert0: trip-point0 {
type = "hot";
};
+ mdmss0_alert1: trip-point1 {
+ temperature = <95000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
mdmss0_crit: mdmss0-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ mdmss0_pa_cooling_map: map0 {
+ trip = <&mdmss0_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_PA
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ mdmss0_modem_cooling_map: map1 {
+ trip = <&mdmss0_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_MODEM
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
mdmss1-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 8>;
trips {
@@ -7831,15 +7892,37 @@ mdmss1_alert0: trip-point0 {
type = "hot";
};
+ mdmss1_alert1: trip-point1 {
+ temperature = <95000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
mdmss1_crit: mdmss1-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ mdmss1_pa_cooling_map: map0 {
+ trip = <&mdmss1_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_PA
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ mdmss1_modem_cooling_map: map1 {
+ trip = <&mdmss1_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_MODEM
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
mdmss2-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 9>;
trips {
@@ -7849,15 +7932,37 @@ mdmss2_alert0: trip-point0 {
type = "hot";
};
+ mdmss2_alert1: trip-point1 {
+ temperature = <95000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
mdmss2_crit: mdmss2-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ mdmss2_pa_cooling_map: map0 {
+ trip = <&mdmss2_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_PA
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ mdmss2_modem_cooling_map: map1 {
+ trip = <&mdmss2_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_MODEM
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
mdmss3-thermal {
+ polling-delay-passive = <200>;
+
thermal-sensors = <&tsens1 10>;
trips {
@@ -7867,12 +7972,32 @@ mdmss3_alert0: trip-point0 {
type = "hot";
};
+ mdmss3_alert1: trip-point1 {
+ temperature = <95000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+
mdmss3_crit: mdmss3-crit {
temperature = <110000>;
hysteresis = <0>;
type = "critical";
};
};
+
+ cooling-maps {
+ mdmss3_pa_cooling_map: map0 {
+ trip = <&mdmss3_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_PA
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+
+ mdmss3_modem_cooling_map: map1 {
+ trip = <&mdmss3_alert1>;
+ cooling-device = <&remoteproc_mpss QCOM_TMD_MODEM
+ THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
};
camera0-thermal {
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
index 82ebd88f9aba..e3ddf47ce421 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-radxa-dragon-q6a.dts
@@ -24,6 +24,14 @@
/delete-node/ &adsp_mem;
/delete-node/ &cdsp_mem;
/delete-node/ &ipa_fw_mem;
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
/delete-node/ &mpss_mem;
/delete-node/ &remoteproc_mpss;
/delete-node/ &remoteproc_wpss;
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
index c8eed8ba93f5..8ce0cf23deee 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-minipc-g1iot.dts
@@ -22,6 +22,14 @@
/delete-node/ &cdsp_mem;
/delete-node/ &ipa_fw_mem;
/delete-node/ &mpss_mem;
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
/delete-node/ &remoteproc_mpss;
/delete-node/ &remoteproc_wpss;
/delete-node/ &rmtfs_mem;
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
index d8a9a7e47bdc..abee1af19c23 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-thundercomm-rubikpi3.dts
@@ -23,6 +23,14 @@
/delete-node/ &adsp_mem;
/delete-node/ &cdsp_mem;
/delete-node/ &ipa_fw_mem;
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
/delete-node/ &mpss_mem;
/delete-node/ &remoteproc_mpss;
/delete-node/ &remoteproc_wpss;
diff --git a/arch/arm64/boot/dts/qcom/qcs6490-vicharak-axon-mini.dts b/arch/arm64/boot/dts/qcom/qcs6490-vicharak-axon-mini.dts
index 4f2e0109f49b..d3f558596ca2 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-vicharak-axon-mini.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-vicharak-axon-mini.dts
@@ -25,6 +25,14 @@
/delete-node/ &cdsp_mem;
/delete-node/ &ipa_fw_mem;
/delete-node/ &mpss_mem;
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
/delete-node/ &remoteproc_mpss;
/delete-node/ &remoteproc_wpss;
/delete-node/ &rmtfs_mem;
diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
index ac89724ee099..891941906a46 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine-lte-sku.dtsi
@@ -28,8 +28,18 @@ &ipa {
status = "okay";
};
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
+
&remoteproc_mpss {
compatible = "qcom,sc7280-mss-pil";
+ /delete-property/ #cooling-cells;
reg = <0 0x04080000 0 0x10000>, <0 0x04180000 0 0x48>;
reg-names = "qdsp6", "rmb";
diff --git a/arch/arm64/boot/dts/qcom/sc7280-herobrine-wifi-sku.dtsi b/arch/arm64/boot/dts/qcom/sc7280-herobrine-wifi-sku.dtsi
index 3ebc915f0dc2..296c72672ec5 100644
--- a/arch/arm64/boot/dts/qcom/sc7280-herobrine-wifi-sku.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280-herobrine-wifi-sku.dtsi
@@ -7,6 +7,15 @@
/* WIFI SKUs save 256M by not having modem/mba/rmtfs memory regions defined. */
+/delete-node/ &mdmss0_pa_cooling_map;
+/delete-node/ &mdmss0_modem_cooling_map;
+/delete-node/ &mdmss1_pa_cooling_map;
+/delete-node/ &mdmss1_modem_cooling_map;
+/delete-node/ &mdmss2_pa_cooling_map;
+/delete-node/ &mdmss2_modem_cooling_map;
+/delete-node/ &mdmss3_pa_cooling_map;
+/delete-node/ &mdmss3_modem_cooling_map;
+
/delete-node/ &mpss_mem;
/delete-node/ &remoteproc_mpss;
/delete-node/ &rmtfs_mem;
--
2.34.1