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From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Zhang Rui <rui.zhang@intel.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Amit Kucheria <amitk@kernel.org>,
	Andreas Westman Dorcsak <hedmoo@yahoo.com>,
	Maxim Schwalm <maxim.schwalm@gmail.com>,
	Svyatoslav Ryhel <clamor95@gmail.com>,
	Ihor Didenko <tailormoon@rambler.ru>,
	Ion Agorria <ion@agorria.com>,
	Matt Merhar <mattmerhar@protonmail.com>,
	Peter Geis <pgwipeout@gmail.com>
Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org
Subject: [PATCH v4 1/6] dt-bindings: thermal: Add binding for Tegra30 thermal sensor
Date: Wed, 16 Jun 2021 22:04:12 +0300	[thread overview]
Message-ID: <20210616190417.32214-2-digetx@gmail.com> (raw)
In-Reply-To: <20210616190417.32214-1-digetx@gmail.com>

All NVIDIA Tegra30 SoCs have on-chip sensors which monitor temperature
and voltage of the SoC. Sensors also controls CPU x2 freq throttle and
emits emergency shutdown signal. TSENSOR has has two separate channels
for each sensor placed in a different parts of the SoC. Add binding for
the sensor hardware.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
 .../thermal/nvidia,tegra30-tsensor.yaml       | 73 +++++++++++++++++++
 1 file changed, 73 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/thermal/nvidia,tegra30-tsensor.yaml

diff --git a/Documentation/devicetree/bindings/thermal/nvidia,tegra30-tsensor.yaml b/Documentation/devicetree/bindings/thermal/nvidia,tegra30-tsensor.yaml
new file mode 100644
index 000000000000..a35da257b070
--- /dev/null
+++ b/Documentation/devicetree/bindings/thermal/nvidia,tegra30-tsensor.yaml
@@ -0,0 +1,73 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/thermal/nvidia,tegra30-tsensor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NVIDIA Tegra30 Thermal Sensor
+
+maintainers:
+  - Dmitry Osipenko <digetx@gmail.com>
+  - Jon Hunter <jonathanh@nvidia.com>
+  - Thierry Reding <thierry.reding@gmail.com>
+
+description: |
+  TSENSOR provides thermal and voltage sensors which monitor temperature
+  and voltage of the chip. Sensors are placed across the die to gauge the
+  temperature of the whole chip. The TSENSOR module:
+
+    Generates an interrupt to SW to lower temperature via DVFS on reaching
+    a certain thermal/voltage threshold.
+
+    Generates a signal to the CAR to reduce CPU frequency by half on reaching
+    a certain thermal/voltage threshold.
+
+    Generates a signal to the PMC when the temperature reaches dangerously high
+    levels to reset the chip and sets a flag in the PMC.
+
+  TSENSOR has two channels which monitor two different spots of the SoC.
+
+properties:
+  compatible:
+    const: nvidia,tegra30-tsensor
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  resets:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  "#thermal-sensor-cells":
+    const: 1
+
+  assigned-clock-parents: true
+  assigned-clock-rates: true
+  assigned-clocks: true
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - resets
+  - interrupts
+  - "#thermal-sensor-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    thermal-sensor@70014000 {
+      compatible = "nvidia,tegra30-tsensor";
+      reg = <0x70014000 0x500>;
+      interrupts = <0 102 4>;
+      clocks = <&clk 100>;
+      resets = <&rst 100>;
+
+      #thermal-sensor-cells = <1>;
+    };
-- 
2.30.2


  reply	other threads:[~2021-06-16 19:05 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-16 19:04 [PATCH v4 0/6] Add driver for NVIDIA Tegra30 SoC Thermal sensor Dmitry Osipenko
2021-06-16 19:04 ` Dmitry Osipenko [this message]
2021-06-21  9:46   ` [thermal: thermal/next] dt-bindings: thermal: Add binding for Tegra30 thermal sensor thermal-bot for Dmitry Osipenko
2021-07-04 18:02   ` thermal-bot for Dmitry Osipenko
2021-06-16 19:04 ` [PATCH v4 2/6] thermal: thermal_of: Stop zone device before unregistering it Dmitry Osipenko
2021-06-21  9:46   ` [thermal: thermal/next] thermal/core/thermal_of: " thermal-bot for Dmitry Osipenko
2021-07-04 18:02   ` thermal-bot for Dmitry Osipenko
2021-06-16 19:04 ` [PATCH v4 3/6] thermal/drivers/tegra: Add driver for Tegra30 thermal sensor Dmitry Osipenko
2021-06-21  9:46   ` [thermal: thermal/next] " thermal-bot for Dmitry Osipenko
2021-09-09 14:38   ` thermal-bot for Dmitry Osipenko
2021-06-16 19:04 ` [PATCH v4 4/6] ARM: tegra_defconfig: Enable CONFIG_TEGRA30_TSENSOR Dmitry Osipenko
2021-06-16 19:04 ` [PATCH v4 5/6] ARM: multi_v7_defconfig: " Dmitry Osipenko
2021-06-16 19:04 ` [PATCH v4 6/6] ARM: tegra: Add SoC thermal sensor to Tegra30 device-trees Dmitry Osipenko
2021-06-21 17:13 ` [PATCH v4 0/6] Add driver for NVIDIA Tegra30 SoC Thermal sensor Daniel Lezcano
2021-06-21 17:26   ` Dmitry Osipenko
2021-06-21 18:16     ` Daniel Lezcano
2021-06-21 18:25       ` Dmitry Osipenko

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