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[77.158.188.58]) by smtp.gmail.com with ESMTPSA id l24-20020a1ced18000000b003d99da8d30asm26395909wmh.46.2023.01.12.07.29.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Jan 2023 07:29:54 -0800 (PST) From: bchihi@baylibre.com To: daniel.lezcano@linaro.org, rafael@kernel.org, amitk@kernel.org, rui.zhang@intel.com Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, khilman@baylibre.com, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, james.lo@mediatek.com, rex-bc.chen@mediatek.com Subject: [PATCH v10 2/6] dt-bindings/thermal/mediatek: Add dt-binding document for LVTS thermal controllers Date: Thu, 12 Jan 2023 16:28:51 +0100 Message-Id: <20230112152855.216072-3-bchihi@baylibre.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230112152855.216072-1-bchihi@baylibre.com> References: <20230112152855.216072-1-bchihi@baylibre.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Balsam CHIHI Add dt-binding document for mt8192 and mt8195 LVTS thermal controllers. Signed-off-by: Balsam CHIHI --- .../thermal/mediatek,lvts-thermal.yaml | 140 ++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml diff --git a/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml new file mode 100644 index 000000000000..43b8777fc1b2 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/mediatek,lvts-thermal.yaml @@ -0,0 +1,140 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/mediatek,lvts-thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: MediaTek SoC Low Voltage Thermal Sensor (LVTS) + +maintainers: + - Balsam CHIHI + +description: | + LVTS is a thermal management architecture composed of three subsystems, + a Sensing device - Thermal Sensing Micro Circuit Unit (TSMCU), + a Converter - Low Voltage Thermal Sensor converter (LVTS), and + a Digital controller (LVTS_CTRL). + +properties: + compatible: + enum: + - mediatek,mt8192-lvts-mcu + - mediatek,mt8192-lvts-ap + - mediatek,mt8195-lvts-mcu + - mediatek,mt8195-lvts-ap + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + description: LVTS reset for clearing temporary data on AP/MCU. + + nvmem-cells: + minItems: 1 + items: + - description: Calibration eFuse data 1 for LVTS + - description: Calibration eFuse data 2 for LVTS + + nvmem-cell-names: + minItems: 1 + items: + - const: lvts-calib-data-1 + - const: lvts-calib-data-2 + + "#thermal-sensor-cells": + const: 1 + +allOf: + - $ref: thermal-sensor.yaml# + + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt8192-lvts-mcu + - mediatek,mt8192-lvts-ap + then: + properties: + nvmem-cells: + maxItems: 1 + + nvmem-cell-names: + maxItems: 1 + + - if: + properties: + compatible: + contains: + enum: + - mediatek,mt8195-lvts-mcu + - mediatek,mt8195-lvts-ap + then: + properties: + nvmem-cells: + maxItems: 2 + + nvmem-cell-names: + maxItems: 2 + +required: + - compatible + - reg + - interrupts + - clocks + - resets + - nvmem-cells + - nvmem-cell-names + - "#thermal-sensor-cells" + +additionalProperties: false + +examples: + - | + #include + #include + #include + #include + + soc { + #address-cells = <2>; + #size-cells = <2>; + + lvts_mcu: thermal-sensor@11278000 { + compatible = "mediatek,mt8195-lvts-mcu"; + reg = <0 0x11278000 0 0x1000>; + interrupts = ; + clocks = <&infracfg_ao CLK_INFRA_AO_THERM>; + resets = <&infracfg_ao MT8195_INFRA_RST4_THERM_CTRL_MCU_SWRST>; + nvmem-cells = <&lvts_efuse_data1 &lvts_efuse_data2>; + nvmem-cell-names = "lvts-calib-data-1", "lvts-calib-data-2"; + #thermal-sensor-cells = <1>; + }; + }; + + thermal_zones: thermal-zones { + cpu0-thermal { + polling-delay = <1000>; + polling-delay-passive = <250>; + thermal-sensors = <&lvts_mcu MT819x_MCU_LITTLE_CPU0>; + trips { + cpu0_alert: trip-alert { + temperature = <85000>; + hysteresis = <2000>; + type = "passive"; + }; + cpu0_crit: trip-crit { + temperature = <100000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + }; + };