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Message-Id: <20240617-rk-dts-additions-v5-1-c1f5f3267f1e@gmail.com>
Date: Mon, 17 Jun 2024 22:28:51 +0400
From: Alexey Charkov <alchark@...il.com>
To: Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>,
Dragan Simic <dsimic@...jaro.org>, Viresh Kumar <viresh.kumar@...aro.org>,
Chen-Yu Tsai <wens@...nel.org>, Diederik de Haas <didi.debian@...ow.org>,
devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
Alexey Charkov <alchark@...il.com>
Subject: [PATCH v5 1/8] arm64: dts: rockchip: add thermal zones information
on RK3588
This includes the necessary device tree data to allow thermal
monitoring on RK3588(s) using the on-chip TSADC device, along with
trip points for automatic thermal management.
Each of the CPU clusters (one for the little cores and two for
the big cores) get a passive cooling trip point at 85C, which
will trigger DVFS throttling of the respective cluster upon
reaching a high temperature condition.
All zones also have a critical trip point at 115C, which will
trigger a reset.
Signed-off-by: Alexey Charkov <alchark@...il.com>
---
arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 147 ++++++++++++++++++++++++++
1 file changed, 147 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
index 629049f3dc16..574359279867 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi
@@ -10,6 +10,7 @@
#include <dt-bindings/reset/rockchip,rk3588-cru.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/ata/ahci.h>
+#include <dt-bindings/thermal/thermal.h>
/ {
compatible = "rockchip,rk3588";
@@ -2368,6 +2369,152 @@ pwm15: pwm@...f0030 {
status = "disabled";
};
+ thermal_zones: thermal-zones {
+ /* sensor near the center of the SoC */
+ package_thermal: package-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 0>;
+
+ trips {
+ package_crit: package-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ /* sensor between A76 cores 0 and 1 */
+ bigcore0_thermal: bigcore0-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 1>;
+
+ trips {
+ bigcore0_alert: bigcore0-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ bigcore0_crit: bigcore0-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&bigcore0_alert>;
+ cooling-device =
+ <&cpu_b0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu_b1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+
+ /* sensor between A76 cores 2 and 3 */
+ bigcore2_thermal: bigcore2-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 2>;
+
+ trips {
+ bigcore2_alert: bigcore2-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ bigcore2_crit: bigcore2-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&bigcore2_alert>;
+ cooling-device =
+ <&cpu_b2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu_b3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+
+ /* sensor between the four A55 cores */
+ little_core_thermal: littlecore-thermal {
+ polling-delay-passive = <100>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 3>;
+
+ trips {
+ littlecore_alert: littlecore-alert {
+ temperature = <85000>;
+ hysteresis = <2000>;
+ type = "passive";
+ };
+ littlecore_crit: littlecore-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ cooling-maps {
+ map0 {
+ trip = <&littlecore_alert>;
+ cooling-device =
+ <&cpu_l0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu_l1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu_l2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>,
+ <&cpu_l3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+
+ /* sensor near the PD_CENTER power domain */
+ center_thermal: center-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 4>;
+
+ trips {
+ center_crit: center-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ gpu_thermal: gpu-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 5>;
+
+ trips {
+ gpu_crit: gpu-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+
+ npu_thermal: npu-thermal {
+ polling-delay-passive = <0>;
+ polling-delay = <0>;
+ thermal-sensors = <&tsadc 6>;
+
+ trips {
+ npu_crit: npu-crit {
+ temperature = <115000>;
+ hysteresis = <0>;
+ type = "critical";
+ };
+ };
+ };
+ };
+
tsadc: tsadc@...00000 {
compatible = "rockchip,rk3588-tsadc";
reg = <0x0 0xfec00000 0x0 0x400>;
--
2.45.2
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