[thermal: thermal/next] dt-bindings: thermal: Add binding for Tegra30 thermal sensor
From: thermal-bot for Dmitry Osipenko <hidden>
Date: 2021-06-21 09:47:00
Subsystem:
open firmware and flattened device tree bindings, the rest, thermal · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Rafael J. Wysocki, Daniel Lezcano
The following commit has been merged into the thermal/next branch of thermal: Commit-ID: 6380829885ccf8a5ec556ef2b3bb69f5961f9dde Gitweb: https://git.kernel.org/pub/scm/linux/kernel/git/thermal/linux.git//6380829885ccf8a5ec556ef2b3bb69f5961f9dde Author: Dmitry Osipenko [off-list ref] AuthorDate: Wed, 16 Jun 2021 22:04:12 +03:00 Committer: Daniel Lezcano [off-list ref] CommitterDate: Fri, 18 Jun 2021 12:38:33 +02:00 dt-bindings: thermal: Add binding for Tegra30 thermal sensor 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> Signed-off-by: Daniel Lezcano <redacted> Link: https://lore.kernel.org/r/20210616190417.32214-2-digetx@gmail.com (local) --- Documentation/devicetree/bindings/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 0000000..a35da25
--- /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>; + };