The Renesas RZ/G3E SoC includes a Thermal Sensor Unit (TSU) block designed to measure the junction temperature. The device provides real-time temperature measurements for thermal management, utilizing a single dedicated channel (channel 1) for temperature sensing. Signed-off-by: John Madieu <john.madieu.xa@xxxxxxxxxxxxxx> --- .../thermal/renesas,r9a09g047-tsu.yaml | 123 ++++++++++++++++++ 1 file changed, 123 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml diff --git a/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml new file mode 100644 index 000000000000..dbd3860a31d0 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/renesas,r9a09g047-tsu.yaml @@ -0,0 +1,123 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/renesas,r9a09g047-tsu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G3E Temperature Sensor Unit (TSU) + +maintainers: + - John Madieu <john.madieu.xa@xxxxxxxxxxxxxx> + +description: | + The Temperature Sensor Unit (TSU) is an integrated thermal sensor that monitors + the chip temperature on the Renesas RZ/G3E SoC. The TSU provides real-time + temperature measurements for thermal management. + +properties: + compatible: + const: renesas,r9a09g047-tsu + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + power-domains: + maxItems: 1 + + interrupts: + description: | + Interrupt specifiers for the TSU: + - S12TSUADI1: Conversion complete interrupt signal (pulse) + - S12TSUADCMPI1: Comparison result interrupt signal (level) + + interrupt-names: + items: + - const: S12TSUADI1 + - const: S12TSUADCMPI1 + + "#thermal-sensor-cells": + const: 0 + + renesas,tsu-calibration-sys: + $ref: /schemas/types.yaml#/definitions/phandle + description: | + Phandle to the system controller (sys) that contains the TSU + calibration values used for temperature calculations. + + renesas,tsu-operating-mode: + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [0, 1] + description: | + TSU operating mode: + 0: Mode 0 - Conversion started by software + 1: Mode 1 - Conversion started by ELC trigger + +required: + - compatible + - reg + - clocks + - resets + - power-domains + - interrupts + - interrupt-names + - "#thermal-sensor-cells" + - renesas,tsu-operating-mode + - renesas,tsu-calibration-sys + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/renesas,r9a09g047-cpg.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + tsu: thermal@14002000 { + compatible = "renesas,r9a09g047-tsu"; + reg = <0 0x14002000 0 0x1000>; + clocks = <&cpg CPG_MOD 0x10a>; + resets = <&cpg 0xf8>; + power-domains = <&cpg>; + interrupts = <GIC_SPI 250 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH>; + interrupt-names = "S12TSUADI1", "S12TSUADCMPI1"; + #thermal-sensor-cells = <0>; + renesas,tsu-operating-mode = <0>; + renesas,tsu-calibration-sys = <&sys>; + }; + + thermal-zones { + cpu-thermal { + polling-delay = <1000>; + polling-delay-passive = <250>; + thermal-sensors = <&tsu>; + + cooling-maps { + map0 { + trip = <&target>; + cooling-device = <&cpu0 0 3>, <&cpu1 0 3>, + <&cpu2 0 3>, <&cpu3 0 3>; + contribution = <1024>; + }; + }; + + trips { + target: trip-point { + temperature = <95000>; + hysteresis = <1000>; + type = "passive"; + }; + + sensor_crit: sensor-crit { + temperature = <120000>; + hysteresis = <1000>; + type = "critical"; + }; + }; + }; + }; -- 2.25.1
