dt-bindings: thermal: k3: Add VTM bindings documentation (3dc74875) · Commits · 戴 / test

Add VTM bindings documentation. In the Voltage Thermal Management Module(VTM), K3 AM654 supplies a voltage reference and a temperature sensor feature that are gathered in the band gap voltage and temperature sensor (VBGAPTS) module. The band gap provides current and voltage reference for its internal circuits and other analog IP blocks. The analog-to-digital converter (ADC) produces an output value that is proportional to the silicon temperature. Signed-off-by:

Keerthy <j-keerthy@ti.com> Reviewed-by:

Rob Herring <robh@kernel.org> Reviewed-by:

Amit Kucheria <amit.kucheria@linaro.org> Signed-off-by:

Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20200407055116.16082-2-j-keerthy@ti.com

Documentation/devicetree/bindings/thermal/ti,am654-thermal.yaml

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		# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
		%YAML 1.2
		---
		$id: http://devicetree.org/schemas/thermal/ti,am654-thermal.yaml#
		$schema: http://devicetree.org/meta-schemas/core.yaml#

		title: Texas Instruments AM654 VTM (DTS) binding

		maintainers:
		- Keerthy <j-keerthy@ti.com>

		properties:
		compatible:
		const: ti,am654-vtm

		reg:
		maxItems: 1

		power-domains:
		maxItems: 1

		"#thermal-sensor-cells":
		const: 1

		required:
		- compatible
		- reg
		- power-domains
		- "#thermal-sensor-cells"

		additionalProperties: false

		examples:
		- \|
		#include <dt-bindings/soc/ti,sci_pm_domain.h>
		vtm: thermal@42050000 {
		compatible = "ti,am654-vtm";
		reg = <0x0 0x42050000 0x0 0x25c>;
		power-domains = <&k3_pds 80 TI_SCI_PD_EXCLUSIVE>;
		#thermal-sensor-cells = <1>;
		};

		mpu0_thermal: mpu0_thermal {
		polling-delay-passive = <250>; /* milliseconds */
		polling-delay = <500>; /* milliseconds */
		thermal-sensors = <&vtm0 0>;

		trips {
		mpu0_crit: mpu0_crit {
		temperature = <125000>; /* milliCelsius */
		hysteresis = <2000>; /* milliCelsius */
		type = "critical";
		};
		};
		};
		...

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