From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Jonathan Hunter <jonathanh@nvidia.com>,
Matt Merhar <mattmerhar@protonmail.com>,
Peter Geis <pgwipeout@gmail.com>
Cc: Daniel Lezcano <daniel.lezcano@linaro.org>,
linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: [PATCH v2 01/15] ARM: tegra: Add SoC thermal sensor to Tegra30 device-trees
Date: Tue, 3 Aug 2021 00:19:33 +0300 [thread overview]
Message-ID: <20210802211947.19715-2-digetx@gmail.com> (raw)
In-Reply-To: <20210802211947.19715-1-digetx@gmail.com>
Add the on-chip SoC thermal sensor to Tegra30 device-trees. Now CPU
temperature reporting and thermal throttling is available on all Tegra30
devices universally.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
arch/arm/boot/dts/tegra30.dtsi | 87 ++++++++++++++++++++++++++++++++--
1 file changed, 83 insertions(+), 4 deletions(-)
diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi
index c577c191be4b..eaf4951d9ff8 100644
--- a/arch/arm/boot/dts/tegra30.dtsi
+++ b/arch/arm/boot/dts/tegra30.dtsi
@@ -5,6 +5,7 @@
#include <dt-bindings/pinctrl/pinctrl-tegra.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/soc/tegra-pmc.h>
+#include <dt-bindings/thermal/thermal.h>
#include "tegra30-peripherals-opp.dtsi"
@@ -800,6 +801,20 @@ fuse@7000f800 {
reset-names = "fuse";
};
+ tsensor: tsensor@70014000 {
+ compatible = "nvidia,tegra30-tsensor";
+ reg = <0x70014000 0x500>;
+ interrupts = <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&tegra_car TEGRA30_CLK_TSENSOR>;
+ resets = <&tegra_car TEGRA30_CLK_TSENSOR>;
+
+ assigned-clocks = <&tegra_car TEGRA30_CLK_TSENSOR>;
+ assigned-clock-parents = <&tegra_car TEGRA30_CLK_CLK_M>;
+ assigned-clock-rates = <500000>;
+
+ #thermal-sensor-cells = <1>;
+ };
+
hda@70030000 {
compatible = "nvidia,tegra30-hda";
reg = <0x70030000 0x10000>;
@@ -1062,32 +1077,36 @@ cpus {
#address-cells = <1>;
#size-cells = <0>;
- cpu@0 {
+ cpu0: cpu@0 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <0>;
clocks = <&tegra_car TEGRA30_CLK_CCLK_G>;
+ #cooling-cells = <2>;
};
- cpu@1 {
+ cpu1: cpu@1 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <1>;
clocks = <&tegra_car TEGRA30_CLK_CCLK_G>;
+ #cooling-cells = <2>;
};
- cpu@2 {
+ cpu2: cpu@2 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <2>;
clocks = <&tegra_car TEGRA30_CLK_CCLK_G>;
+ #cooling-cells = <2>;
};
- cpu@3 {
+ cpu3: cpu@3 {
device_type = "cpu";
compatible = "arm,cortex-a9";
reg = <3>;
clocks = <&tegra_car TEGRA30_CLK_CCLK_G>;
+ #cooling-cells = <2>;
};
};
@@ -1102,4 +1121,64 @@ pmu {
<&{/cpus/cpu@2}>,
<&{/cpus/cpu@3}>;
};
+
+ thermal-zones {
+ tsensor0-thermal {
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <5000>; /* milliseconds */
+
+ thermal-sensors = <&tsensor 0>;
+
+ trips {
+ level1_trip: dvfs-alert {
+ /* throttle at 80C until temperature drops to 79.8C */
+ temperature = <80000>;
+ hysteresis = <200>;
+ type = "passive";
+ };
+
+ level2_trip: cpu-div2-throttle {
+ /* hardware CPU x2 freq throttle at 85C */
+ temperature = <85000>;
+ hysteresis = <200>;
+ type = "hot";
+ };
+
+ level3_trip: soc-critical {
+ /* hardware shut down at 90C */
+ temperature = <90000>;
+ hysteresis = <2000>;
+ type = "critical";
+ };
+ };
+
+ cooling-maps {
+ map0 {
+ trip = <&level1_trip>;
+ 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>,
+ <&actmon THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+ };
+ };
+ };
+
+ tsensor1-thermal {
+ status = "disabled";
+
+ polling-delay-passive = <1000>; /* milliseconds */
+ polling-delay = <0>; /* milliseconds */
+
+ thermal-sensors = <&tsensor 1>;
+
+ trips {
+ dvfs-alert {
+ temperature = <80000>;
+ hysteresis = <200>;
+ type = "passive";
+ };
+ };
+ };
+ };
};
--
2.32.0
next prev parent reply other threads:[~2021-08-02 21:20 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-02 21:19 [PATCH v2 00/15] Tegra ARM32 device-tree improvements for 5.15 Dmitry Osipenko
2021-08-02 21:19 ` Dmitry Osipenko [this message]
2021-08-02 21:19 ` [PATCH v2 02/15] ARM: tegra: ouya: Add interrupt to temperature sensor node Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 03/15] ARM: tegra: paz00: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 04/15] ARM: tegra: nexus7: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 05/15] ARM: tegra: acer-a500: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 06/15] ARM: tegra: nyan: Correct interrupt trigger type of temperature sensor Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 07/15] ARM: tegra: apalis: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 08/15] ARM: tegra: cardhu: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 09/15] ARM: tegra: dalmore: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 10/15] ARM: tegra: jetson-tk1: " Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 11/15] ARM: tegra: acer-a500: Remove bogus USB VBUS regulators Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 12/15] ARM: tegra: acer-a500: Add power supplies to accelerometer Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 13/15] ARM: tegra: acer-a500: Use verbose variant of atmel,wakeup-method value Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 14/15] ARM: tegra: acer-a500: Improve thermal zones Dmitry Osipenko
2021-08-02 21:19 ` [PATCH v2 15/15] ARM: tegra: nexus7: " Dmitry Osipenko
2021-08-11 10:05 ` [PATCH v2 00/15] Tegra ARM32 device-tree improvements for 5.15 Thierry Reding
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