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([82.78.167.46]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d4fdbcfaasm120146525e9.35.2025.03.24.06.57.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 24 Mar 2025 06:57:10 -0700 (PDT) From: Claudiu X-Google-Original-From: Claudiu To: rafael@kernel.org, daniel.lezcano@linaro.org, rui.zhang@intel.com, lukasz.luba@arm.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, geert+renesas@glider.be, magnus.damm@gmail.com, p.zabel@pengutronix.de Cc: claudiu.beznea@tuxon.dev, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Claudiu Beznea Subject: [PATCH v3 1/4] dt-bindings: thermal: r9a08g045-tsu: Document the TSU unit Date: Mon, 24 Mar 2025 15:56:58 +0200 Message-ID: <20250324135701.179827-2-claudiu.beznea.uj@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250324135701.179827-1-claudiu.beznea.uj@bp.renesas.com> References: <20250324135701.179827-1-claudiu.beznea.uj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Claudiu Beznea The Renesas RZ/G3S SoC includes a Thermal Sensor Unit (TSU) block designed to measure the junction temperature. The temperature is measured using the RZ/G3S ADC, with a dedicated ADC channel directly connected to the TSU. Add documentation for it. Reviewed-by: Rob Herring (Arm) Reviewed-by: Geert Uytterhoeven Signed-off-by: Claudiu Beznea --- Changes in v3: - none Changes in v2: - collected tags .../thermal/renesas,r9a08g045-tsu.yaml | 93 +++++++++++++++++++ 1 file changed, 93 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/renesas,r9a08g045-tsu.yaml diff --git a/Documentation/devicetree/bindings/thermal/renesas,r9a08g045-tsu.yaml b/Documentation/devicetree/bindings/thermal/renesas,r9a08g045-tsu.yaml new file mode 100644 index 000000000000..573e2b9d3752 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/renesas,r9a08g045-tsu.yaml @@ -0,0 +1,93 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/renesas,r9a08g045-tsu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G3S Thermal Sensor Unit + +description: + The thermal sensor unit (TSU) measures the temperature(Tj) inside + the LSI. + +maintainers: + - Claudiu Beznea + +$ref: thermal-sensor.yaml# + +properties: + compatible: + const: renesas,r9a08g045-tsu + + reg: + maxItems: 1 + + clocks: + items: + - description: TSU module clock + + power-domains: + maxItems: 1 + + resets: + items: + - description: TSU module reset + + io-channels: + items: + - description: ADC channel which reports the TSU temperature + + io-channel-names: + items: + - const: tsu + + "#thermal-sensor-cells": + const: 0 + +required: + - compatible + - reg + - clocks + - power-domains + - resets + - io-channels + - io-channel-names + - '#thermal-sensor-cells' + +additionalProperties: false + +examples: + - | + #include + + tsu: thermal@10059000 { + compatible = "renesas,r9a08g045-tsu"; + reg = <0x10059000 0x1000>; + clocks = <&cpg CPG_MOD R9A08G045_TSU_PCLK>; + resets = <&cpg R9A08G045_TSU_PRESETN>; + power-domains = <&cpg>; + #thermal-sensor-cells = <0>; + io-channels = <&adc 8>; + io-channel-names = "tsu"; + }; + + thermal-zones { + cpu-thermal { + polling-delay-passive = <250>; + polling-delay = <1000>; + thermal-sensors = <&tsu>; + + trips { + sensor_crit: sensor-crit { + temperature = <125000>; + hysteresis = <1000>; + type = "critical"; + }; + target: trip-point { + temperature = <100000>; + hysteresis = <1000>; + type = "passive"; + }; + }; + }; + };