From nobody Sat Apr 11 20:58:55 2026 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5EFBEEACD; Fri, 10 Apr 2026 03:32:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.152 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775791951; cv=none; b=BUhrOwgxTFoDftB9ezgltG0T1M2NS92j3+Q9PaWr0+1iR+PgYEIrZ9GVaBuOvWIjIBU2DBxSGNmqkXEohEoUV9uUvEL7xdXZmlnfO0Ev3oTV+3ojvYBAgnCvzdGoXr00Xls2s6C3KkOfjhpLU5EowUt9F//fvovFReAMMOZWkdU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775791951; c=relaxed/simple; bh=6QDRzesef9/DWjOV76ZXjr7Ur5Nsb/dXPrNYjvYY+54=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=QoLsrsETYO9qoaG0xeViNme3Qoa0lMD+uj9JVpVYjgeUZiumauA3D4eJSn3tRICbXyT5mL6DCMNleI4OQSHOZgkWLDeMtNwzqy1/nM+83i/2GO3quVwCi5ehHq4t+Xm5OVHKpdJd/rehNHAW6tcHgkOphvePruQ2gbZEsIFgenc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org; spf=pass smtp.mailfrom=mailbox.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=frBkqzCP; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b=kFuTVizA; arc=none smtp.client-ip=80.241.56.152 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mailbox.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="frBkqzCP"; dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="kFuTVizA" Received: from smtp2.mailbox.org (smtp2.mailbox.org [10.196.197.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-102.mailbox.org (Postfix) with ESMTPS id 4fsMn21f2wz9tgZ; Fri, 10 Apr 2026 05:32:22 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1775791942; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FtCO28FVp+A5Y1qkMDfq1zAwOGQuMizhX9EnObgNJl4=; b=frBkqzCPnjYMuJ8KT4RMHwhzjAKYBxekdSCaz8bylrgb5Ef7lDjqX/t8ADX8VntIGO36Mo hcO/nZIUuRb+V8zEeTuKtSOusBFZ5gEa6nLzppdI3uC1nKOqRvHXgqwGRdXkb+o/UK2pSH k9QlGcZsvt6f80q8OnY58Jj5DCtOe6FK+67MlGnU4AMInGZBfTVeq1BdtwL04B63KkB3aK ZaZ8WNsKrLc0LXBhiXw84iWR85QWRYp+jK9IbFaB6YpdeXY12caTze0G1xN/cP3ZOb7RA/ 1SLeuvFriIxBor77+jnL9L0swIqr4gaN9ctdpixftO4crqZylvpasw4pJ8yFSQ== From: Shuwei Wu DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1775791940; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=FtCO28FVp+A5Y1qkMDfq1zAwOGQuMizhX9EnObgNJl4=; b=kFuTVizAeNNrwybZdteDeYulqtb3Brp5t1QmRYCK1Li1YQHbW5zBpI8+zL4jOVjYTTevsE yiBQExwgxpdwrxnvQ69CnDTw+00r2wNlsKdoMEnMludSfXMVuY+7KWrGOe71MEhlGgM7Tk yIWArhCCEzLCyUAnAhnXCqCNtEGTJkBcPFMVAdj/jrMbYvY72VsbF0AnDcyMhCF+UIusAZ EWkHFDLNzj6t/Zuxrz+JcOx6bt6O+FOxlojRvPwdaaiuim/v4NSd0QOvC2YKF8uv3+nuAV cu8VtgRVPjtgCOlh08o0tKUjliI4Wpl0TWFxQr6KjfP2SlwL+iCziG0LmxLZQQ== Date: Fri, 10 Apr 2026 11:31:36 +0800 Subject: [PATCH v4 1/3] dt-bindings: thermal: Add SpacemiT K1 thermal sensor Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260410-k1-thermal-v1-1-12c87dd063c3@mailbox.org> References: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> In-Reply-To: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Shuwei Wu , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Krzysztof Kozlowski , Vincent Legoll , Gong Shuai X-Developer-Signature: v=1; a=ed25519-sha256; t=1775791914; l=2656; i=shuwei.wu@mailbox.org; s=20251125; h=from:subject:message-id; bh=6QDRzesef9/DWjOV76ZXjr7Ur5Nsb/dXPrNYjvYY+54=; b=9+UdWUn1nW2fYeOu17T9C6cy8Fhyqd3NQTZMc6rAHHKYD83d90h6qWYJj8JzCt2oYkH7dBkow 0JKiuQVtJ7LB/Iy/zdEcnFx+sj1h/dAXXjdjotSjjfTNhxE+tgnfLJ7 X-Developer-Key: i=shuwei.wu@mailbox.org; a=ed25519; pk=qZs6i2UZnXkmjUrwO5HJxcfpCvgSNrR4dcU5cjtfTSk= X-MBO-RS-ID: e2e04b93066ba154ca6 X-MBO-RS-META: gi673rtbtu9nb1efg3mhore59151utkt Document the SpacemiT K1 Thermal Sensor, which supports monitoring temperatures for five zones: soc, package, gpu, cluster0, and cluster1. Reviewed-by: Krzysztof Kozlowski Signed-off-by: Shuwei Wu Tested-by: Vincent Legoll # OrangePi-RV2 Tested-by: Gong Shuai --- Changes in v2: - Rename binding file to spacemit,k1-tsensor.yaml and update compatible --- .../bindings/thermal/spacemit,k1-tsensor.yaml | 76 ++++++++++++++++++= ++++ 1 file changed, 76 insertions(+) diff --git a/Documentation/devicetree/bindings/thermal/spacemit,k1-tsensor.= yaml b/Documentation/devicetree/bindings/thermal/spacemit,k1-tsensor.yaml new file mode 100644 index 000000000000..6dad76a7dd36 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/spacemit,k1-tsensor.yaml @@ -0,0 +1,76 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/spacemit,k1-tsensor.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SpacemiT K1 Thermal Sensor + +description: + The SpacemiT K1 Thermal Sensor monitors the temperature of the SoC + using multiple internal sensors (e.g., soc, package, gpu, clusters). + +maintainers: + - Shuwei Wu + +$ref: thermal-sensor.yaml# + +properties: + compatible: + const: spacemit,k1-tsensor + + reg: + maxItems: 1 + + clocks: + items: + - description: Core clock for thermal sensor + - description: Bus clock for thermal sensor + + clock-names: + items: + - const: core + - const: bus + + interrupts: + maxItems: 1 + + resets: + items: + - description: Reset for the thermal sensor + + "#thermal-sensor-cells": + const: 1 + description: + The first cell indicates the sensor ID. + 0 =3D soc + 1 =3D package + 2 =3D gpu + 3 =3D cluster0 + 4 =3D cluster1 + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - resets + - "#thermal-sensor-cells" + +additionalProperties: false + +examples: + - | + #include + + thermal@d4018000 { + compatible =3D "spacemit,k1-tsensor"; + reg =3D <0xd4018000 0x100>; + clocks =3D <&syscon_apbc CLK_TSEN>, + <&syscon_apbc CLK_TSEN_BUS>; + clock-names =3D "core", "bus"; + interrupts =3D <61>; + resets =3D <&syscon_apbc RESET_TSEN>; + #thermal-sensor-cells =3D <1>; + }; --=20 2.53.0 From nobody Sat Apr 11 20:58:55 2026 Received: from mout-p-103.mailbox.org (mout-p-103.mailbox.org [80.241.56.161]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0DE29EACD; Fri, 10 Apr 2026 03:32:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.161 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775791957; cv=none; b=OhCQ0tP/fz0/eEep90GBI4WNs4nb3B5s88K+FlZGWHHDwkF/6qYn10b0G3DJu4+aHd1OkxfmsJtL7uHtIbB2R3/DkgmmzkhUnvjzY5J8FEa0GbdZT/wuBbm4V2y1C4QqSmoiqvJeUflN1+Rk0sJi9FrDLsYCuFFUYVkIaHuOoEI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; 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dkim=pass (2048-bit key) header.d=mailbox.org header.i=@mailbox.org header.b="VXljFu9w" Received: from smtp2.mailbox.org (smtp2.mailbox.org [10.196.197.2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-103.mailbox.org (Postfix) with ESMTPS id 4fsMnD5Ryxz9sPx; Fri, 10 Apr 2026 05:32:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1775791952; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zOlwUtr5Lo6rPDWNTxAz9o0r9Z/5NyEMSsSsCcl1jvI=; b=Xu1QP6zeuaHFBWjyw8b0OnpzVwAC3zUkoSEwuwrozAPsp6viVYQpY/UyShsxQHY4jEeBJ3 EzW4EuyFZT4QBwpEiFdvo1aUCQ7h1GbYr/uUMheeFrvG3O4HNhpzNMVzU9TZLSTPjuevpT m5ZOtT+09CO0FS8Y+huDaYXDs1wT4NreVM9eIbHOReAYx4c2F5ENu4SQ4EBeouIg0kx+L3 R862axISgUK+/GRtqzEy7GYRuDJDrROVgaNxKUybu/UdCkxAIzULSDCirHuEmpvjV1Tpv7 DvI3oA+WxtzHqfIHY8yKu78TP/XwHUqFnJsY+/bypV5HD5ccT1932WY1LwKOFA== From: Shuwei Wu DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1775791951; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=zOlwUtr5Lo6rPDWNTxAz9o0r9Z/5NyEMSsSsCcl1jvI=; b=VXljFu9wX1bSyYdGHcon143HxpYmYyqcfj2wdjMwbY/fGrz5YWZrkIs8NsE4q+mQbaKhB+ /rdZB/sGdVbU1NjqC/AG3li0IkWfPSKcFUV2eoEGwbseiBiWi97q8UI0v6Yp9T8QwvqAoX aqoqE+R4W0zAq14iNdW69H2DzMWSTtcoSXLZVilrfO8WU+lN5s6YRuCF1ZmTd9imZ7B6a/ hQixSgtEtsTSMApzOWaDWyccC1UztIKgBSt91IReqeYD5ai4DD5sNR3yfscjRBzS5ktFKS JfySIfv2ImyGfnZ1I/IqF75x72NJ1f9+ZYVrj/yvJcOImZpOjmkoZg60D9cnbA== Date: Fri, 10 Apr 2026 11:31:37 +0800 Subject: [PATCH v4 2/3] thermal: spacemit: k1: Add thermal sensor support Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260410-k1-thermal-v1-2-12c87dd063c3@mailbox.org> References: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> In-Reply-To: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Shuwei Wu , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Anand Moon , Troy Mitchell , Yao Zi , Vincent Legoll , Gong Shuai X-Developer-Signature: v=1; a=ed25519-sha256; t=1775791914; l=12168; i=shuwei.wu@mailbox.org; s=20251125; h=from:subject:message-id; bh=+PHx7pqPbzF8ZyOswv9Bx4l9P5FLsl/XvWpnK62CyiE=; b=ndckK6Oak3t6UmewzJIBi8Ws/sirs6AhVr8kCDQgRyXjB/5NG37INYa2lTUlE6ONlccnMRKAq V1haxk13YSJCAAHr0B1TrrFdQ2m2ZmtvNkjifeogVXQPmSRIYomzgBo X-Developer-Key: i=shuwei.wu@mailbox.org; a=ed25519; pk=qZs6i2UZnXkmjUrwO5HJxcfpCvgSNrR4dcU5cjtfTSk= X-MBO-RS-META: ec1nnaekezbbmmfotswnjfhdbk8brzrx X-MBO-RS-ID: 43500c56d9c21f4c513 The thermal sensor on K1 supports monitoring five temperature zones. The driver registers these sensors with the thermal framework and supports standard operations: - Reading temperature (millidegree Celsius) - Setting high/low thresholds for interrupts Signed-off-by: Shuwei Wu Reviewed-by: Anand Moon Tested-by: Anand Moon Reviewed-by: Troy Mitchell Reviewed-by: Yao Zi Tested-by: Vincent Legoll # OrangePi-RV2 Tested-by: Gong Shuai --- Changes in v4: - Add 'depends on THERMAL_OF' in drivers/thermal/spacemit/Kconfig Changes in v3: - Align multi-line assignments as suggested by reviewer - Remove unnecessary variable definitions Changes in v2: - Rename k1_thermal.c to k1_tsensor.c for better hardware alignment - Move driver to drivers/thermal/spacemit/ - Add Kconfig/Makefile for spacemit and update top-level build files - Refactor names, style, code alignment, and comments - Simplify probe and error handling --- drivers/thermal/Kconfig | 2 + drivers/thermal/Makefile | 1 + drivers/thermal/spacemit/Kconfig | 19 +++ drivers/thermal/spacemit/Makefile | 3 + drivers/thermal/spacemit/k1_tsensor.c | 281 ++++++++++++++++++++++++++++++= ++++ 5 files changed, 306 insertions(+) diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index b10080d61860..1c4a5cd5a23e 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -472,6 +472,8 @@ endmenu =20 source "drivers/thermal/renesas/Kconfig" =20 +source "drivers/thermal/spacemit/Kconfig" + source "drivers/thermal/tegra/Kconfig" =20 config GENERIC_ADC_THERMAL diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index bb21e7ea7fc6..3b249195c088 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -65,6 +65,7 @@ obj-y +=3D mediatek/ obj-$(CONFIG_GENERIC_ADC_THERMAL) +=3D thermal-generic-adc.o obj-$(CONFIG_UNIPHIER_THERMAL) +=3D uniphier_thermal.o obj-$(CONFIG_AMLOGIC_THERMAL) +=3D amlogic_thermal.o +obj-y +=3D spacemit/ obj-$(CONFIG_SPRD_THERMAL) +=3D sprd_thermal.o obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL) +=3D khadas_mcu_fan.o obj-$(CONFIG_LOONGSON2_THERMAL) +=3D loongson2_thermal.o diff --git a/drivers/thermal/spacemit/Kconfig b/drivers/thermal/spacemit/Kc= onfig new file mode 100644 index 000000000000..de7b5ece5af2 --- /dev/null +++ b/drivers/thermal/spacemit/Kconfig @@ -0,0 +1,19 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "SpacemiT thermal drivers" +depends on ARCH_SPACEMIT || COMPILE_TEST + +config SPACEMIT_K1_TSENSOR + tristate "SpacemiT K1 thermal sensor driver" + depends on THERMAL_OF + help + This driver provides support for the thermal sensor + integrated in the SpacemiT K1 SoC. + + The thermal sensor monitors temperatures for five thermal zones: + soc, package, gpu, cluster0, and cluster1. It supports reporting + temperature values and handling high/low threshold interrupts. + + Say Y here if you want to enable thermal monitoring on SpacemiT K1. + If compiled as a module, it will be called k1_tsensor. + +endmenu diff --git a/drivers/thermal/spacemit/Makefile b/drivers/thermal/spacemit/M= akefile new file mode 100644 index 000000000000..82b30741e4ec --- /dev/null +++ b/drivers/thermal/spacemit/Makefile @@ -0,0 +1,3 @@ +# SPDX-License-Identifier: GPL-2.0-only + +obj-$(CONFIG_SPACEMIT_K1_TSENSOR) +=3D k1_tsensor.o diff --git a/drivers/thermal/spacemit/k1_tsensor.c b/drivers/thermal/spacem= it/k1_tsensor.c new file mode 100644 index 000000000000..b742739e9019 --- /dev/null +++ b/drivers/thermal/spacemit/k1_tsensor.c @@ -0,0 +1,281 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Thermal sensor driver for SpacemiT K1 SoC + * + * Copyright (C) 2026 Shuwei Wu + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "../thermal_hwmon.h" + +#define K1_TSENSOR_PCTRL_REG 0x00 +#define K1_TSENSOR_PCTRL_ENABLE BIT(0) +#define K1_TSENSOR_PCTRL_TEMP_MODE BIT(3) +#define K1_TSENSOR_PCTRL_RAW_SEL BIT(7) + +#define K1_TSENSOR_PCTRL_CTUNE GENMASK(11, 8) +#define K1_TSENSOR_PCTRL_SW_CTRL GENMASK(21, 18) +#define K1_TSENSOR_PCTRL_HW_AUTO_MODE BIT(23) + +#define K1_TSENSOR_EN_REG 0x08 +#define K1_TSENSOR_EN_ALL GENMASK(MAX_SENSOR_NUMBER - 1, 0) + +#define K1_TSENSOR_TIME_REG 0x0C +#define K1_TSENSOR_TIME_WAIT_REF_CNT GENMASK(3, 0) +#define K1_TSENSOR_TIME_ADC_CNT_RST GENMASK(7, 4) +#define K1_TSENSOR_TIME_FILTER_PERIOD GENMASK(21, 20) +#define K1_TSENSOR_TIME_MASK GENMASK(23, 0) + +#define K1_TSENSOR_INT_CLR_REG 0x10 +#define K1_TSENSOR_INT_EN_REG 0x14 +#define K1_TSENSOR_INT_STA_REG 0x18 + +#define K1_TSENSOR_INT_EN_MASK BIT(0) +#define K1_TSENSOR_INT_MASK(x) (GENMASK(2, 1) << ((x) * 2)) + +#define K1_TSENSOR_DATA_BASE_REG 0x20 +#define K1_TSENSOR_DATA_REG(x) (K1_TSENSOR_DATA_BASE_REG + ((x) / 2) * 4) +#define K1_TSENSOR_DATA_LOW_MASK GENMASK(15, 0) +#define K1_TSENSOR_DATA_HIGH_MASK GENMASK(31, 16) + +#define K1_TSENSOR_THRSH_BASE_REG 0x40 +#define K1_TSENSOR_THRSH_REG(x) (K1_TSENSOR_THRSH_BASE_REG + ((x) * 4)) +#define K1_TSENSOR_THRSH_LOW_MASK GENMASK(15, 0) +#define K1_TSENSOR_THRSH_HIGH_MASK GENMASK(31, 16) + +#define MAX_SENSOR_NUMBER 5 + +/* Hardware offset value required for temperature calculation */ +#define TEMPERATURE_OFFSET 278 + +struct k1_tsensor_channel { + struct k1_tsensor *ts; + struct thermal_zone_device *tzd; + int id; +}; + +struct k1_tsensor { + void __iomem *base; + struct k1_tsensor_channel ch[MAX_SENSOR_NUMBER]; +}; + +static void k1_tsensor_init(struct k1_tsensor *ts) +{ + u32 val; + + /* Disable all the interrupts */ + writel(0xffffffff, ts->base + K1_TSENSOR_INT_EN_REG); + + /* Configure ADC sampling time and filter period */ + val =3D readl(ts->base + K1_TSENSOR_TIME_REG); + val &=3D ~K1_TSENSOR_TIME_MASK; + val |=3D K1_TSENSOR_TIME_FILTER_PERIOD | + K1_TSENSOR_TIME_ADC_CNT_RST | + K1_TSENSOR_TIME_WAIT_REF_CNT; + writel(val, ts->base + K1_TSENSOR_TIME_REG); + + /* + * Enable all sensors' auto mode, enable dither control, + * consecutive mode, and power up sensor. + */ + val =3D readl(ts->base + K1_TSENSOR_PCTRL_REG); + val &=3D ~K1_TSENSOR_PCTRL_SW_CTRL; + val &=3D ~K1_TSENSOR_PCTRL_CTUNE; + val |=3D K1_TSENSOR_PCTRL_RAW_SEL | + K1_TSENSOR_PCTRL_TEMP_MODE | + K1_TSENSOR_PCTRL_HW_AUTO_MODE | + K1_TSENSOR_PCTRL_ENABLE; + writel(val, ts->base + K1_TSENSOR_PCTRL_REG); + + /* Enable thermal interrupt */ + val =3D readl(ts->base + K1_TSENSOR_INT_EN_REG); + val |=3D K1_TSENSOR_INT_EN_MASK; + writel(val, ts->base + K1_TSENSOR_INT_EN_REG); + + /* Enable each sensor */ + val =3D readl(ts->base + K1_TSENSOR_EN_REG); + val |=3D K1_TSENSOR_EN_ALL; + writel(val, ts->base + K1_TSENSOR_EN_REG); +} + +static void k1_tsensor_enable_irq(struct k1_tsensor_channel *ch) +{ + struct k1_tsensor *ts =3D ch->ts; + u32 val; + + val =3D readl(ts->base + K1_TSENSOR_INT_CLR_REG); + val |=3D K1_TSENSOR_INT_MASK(ch->id); + writel(val, ts->base + K1_TSENSOR_INT_CLR_REG); + + val =3D readl(ts->base + K1_TSENSOR_INT_EN_REG); + val &=3D ~K1_TSENSOR_INT_MASK(ch->id); + writel(val, ts->base + K1_TSENSOR_INT_EN_REG); +} + +/* + * The conversion formula used is: + * T(m=C2=B0C) =3D (((raw_value & mask) >> shift) - TEMPERATURE_OFFSET) * = 1000 + */ +static int k1_tsensor_get_temp(struct thermal_zone_device *tz, int *temp) +{ + struct k1_tsensor_channel *ch =3D thermal_zone_device_priv(tz); + struct k1_tsensor *ts =3D ch->ts; + u32 val; + + val =3D readl(ts->base + K1_TSENSOR_DATA_REG(ch->id)); + if (ch->id % 2) + *temp =3D FIELD_GET(K1_TSENSOR_DATA_HIGH_MASK, val); + else + *temp =3D FIELD_GET(K1_TSENSOR_DATA_LOW_MASK, val); + + *temp -=3D TEMPERATURE_OFFSET; + *temp *=3D 1000; + + return 0; +} + +/* + * For each sensor, the hardware threshold register is 32 bits: + * - Lower 16 bits [15:0] configure the low threshold temperature. + * - Upper 16 bits [31:16] configure the high threshold temperature. + */ +static int k1_tsensor_set_trips(struct thermal_zone_device *tz, int low, i= nt high) +{ + struct k1_tsensor_channel *ch =3D thermal_zone_device_priv(tz); + struct k1_tsensor *ts =3D ch->ts; + u32 val; + + if (low >=3D high) + return -EINVAL; + + if (low < 0) + low =3D 0; + + high =3D high / 1000 + TEMPERATURE_OFFSET; + low =3D low / 1000 + TEMPERATURE_OFFSET; + + val =3D readl(ts->base + K1_TSENSOR_THRSH_REG(ch->id)); + val &=3D ~K1_TSENSOR_THRSH_HIGH_MASK; + val |=3D FIELD_PREP(K1_TSENSOR_THRSH_HIGH_MASK, high); + + val &=3D ~K1_TSENSOR_THRSH_LOW_MASK; + val |=3D FIELD_PREP(K1_TSENSOR_THRSH_LOW_MASK, low); + writel(val, ts->base + K1_TSENSOR_THRSH_REG(ch->id)); + + return 0; +} + +static const struct thermal_zone_device_ops k1_tsensor_ops =3D { + .get_temp =3D k1_tsensor_get_temp, + .set_trips =3D k1_tsensor_set_trips, +}; + +static irqreturn_t k1_tsensor_irq_thread(int irq, void *data) +{ + struct k1_tsensor *ts =3D (struct k1_tsensor *)data; + int mask, status, i; + + status =3D readl(ts->base + K1_TSENSOR_INT_STA_REG); + + for (i =3D 0; i < MAX_SENSOR_NUMBER; i++) { + if (status & K1_TSENSOR_INT_MASK(i)) { + mask =3D readl(ts->base + K1_TSENSOR_INT_CLR_REG); + mask |=3D K1_TSENSOR_INT_MASK(i); + writel(mask, ts->base + K1_TSENSOR_INT_CLR_REG); + thermal_zone_device_update(ts->ch[i].tzd, THERMAL_EVENT_UNSPECIFIED); + } + } + + return IRQ_HANDLED; +} + +static int k1_tsensor_probe(struct platform_device *pdev) +{ + struct device *dev =3D &pdev->dev; + struct k1_tsensor *ts; + struct reset_control *reset; + struct clk *clk; + int i, irq, ret; + + ts =3D devm_kzalloc(dev, sizeof(*ts), GFP_KERNEL); + if (!ts) + return -ENOMEM; + + ts->base =3D devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ts->base)) + return dev_err_probe(dev, PTR_ERR(ts->base), "Failed to get reg\n"); + + reset =3D devm_reset_control_get_exclusive_deasserted(dev, NULL); + if (IS_ERR(reset)) + return dev_err_probe(dev, PTR_ERR(reset), "Failed to get/deassert reset = control\n"); + + clk =3D devm_clk_get_enabled(dev, "core"); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "Failed to get core clock\n"); + + clk =3D devm_clk_get_enabled(dev, "bus"); + if (IS_ERR(clk)) + return dev_err_probe(dev, PTR_ERR(clk), "Failed to get bus clock\n"); + + k1_tsensor_init(ts); + + for (i =3D 0; i < MAX_SENSOR_NUMBER; ++i) { + ts->ch[i].id =3D i; + ts->ch[i].ts =3D ts; + ts->ch[i].tzd =3D devm_thermal_of_zone_register(dev, i, ts->ch + i, &k1_= tsensor_ops); + if (IS_ERR(ts->ch[i].tzd)) + return PTR_ERR(ts->ch[i].tzd); + + /* Attach sysfs hwmon attributes for userspace monitoring */ + ret =3D devm_thermal_add_hwmon_sysfs(dev, ts->ch[i].tzd); + if (ret) + dev_warn(dev, "Failed to add hwmon sysfs attributes\n"); + + k1_tsensor_enable_irq(ts->ch + i); + } + + irq =3D platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + ret =3D devm_request_threaded_irq(dev, irq, NULL, + k1_tsensor_irq_thread, + IRQF_ONESHOT, "k1_tsensor", ts); + if (ret < 0) + return ret; + + platform_set_drvdata(pdev, ts); + + return 0; +} + +static const struct of_device_id k1_tsensor_dt_ids[] =3D { + { .compatible =3D "spacemit,k1-tsensor" }, + { /* sentinel */ } +}; + +MODULE_DEVICE_TABLE(of, k1_tsensor_dt_ids); + +static struct platform_driver k1_tsensor_driver =3D { + .driver =3D { + .name =3D "k1_tsensor", + .of_match_table =3D k1_tsensor_dt_ids, + }, + .probe =3D k1_tsensor_probe, +}; +module_platform_driver(k1_tsensor_driver); + +MODULE_DESCRIPTION("SpacemiT K1 Thermal Sensor Driver"); +MODULE_AUTHOR("Shuwei Wu "); +MODULE_LICENSE("GPL"); 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bh=75ydX2NhihMz6cPR7NoLueEZpsTKvS6m1hDG/Udt4a4=; b=in4WWxf+ktsV8ymFwjWP01J8mgZFZtLamZDiPC8rT+5fv5UbMMsq9mAwa5rV7efzGRF6bD 2g03AybYmYsL0SO066lWZ0QsaM6yQ3KknhssE0DSkn5E03tglh5SWZVHa7nq/uIKT3UT5+ oWs8xielNWt9Ww17J9UBlBuYcME1PWm7sCh9LU6jaAstmVztEUwdwEnwWadDi5Ntuxjdka x/yJBydbLduDmbxexkzj9IBGghH/VRrxFycBXYMG4pu6I+uZ0fdB7GH+2Y3pNFMliNCfTx q6I+QUOoImq4rr/hc19beesQdEUP8MjDcnQdfvHUuonphH9t4ROM+66gtrLjTQ== Date: Fri, 10 Apr 2026 11:31:38 +0800 Subject: [PATCH v4 3/3] riscv: dts: spacemit: Add thermal sensor for K1 SoC Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260410-k1-thermal-v1-3-12c87dd063c3@mailbox.org> References: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> In-Reply-To: <20260410-k1-thermal-v1-0-12c87dd063c3@mailbox.org> To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Shuwei Wu , Philipp Zabel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org, Vincent Legoll , Gong Shuai X-Developer-Signature: v=1; a=ed25519-sha256; t=1775791914; l=3192; i=shuwei.wu@mailbox.org; s=20251125; h=from:subject:message-id; bh=LV2aED3hCbd7+2EFjYPM+jflbIpevxx6AqfJvBCam6Q=; b=ABWwGajBegAFvkleTFUCoLSW+4DSXK54LoyBqVzfpWXXtqfs7/9Qc4vPqLpUKOicRPJJ8PeY1 vtsT/+5FG0iCiCotC0vj4mSjgxTjzE5bJi7y2U/OZSvis4LdW5B4XdE X-Developer-Key: i=shuwei.wu@mailbox.org; a=ed25519; pk=qZs6i2UZnXkmjUrwO5HJxcfpCvgSNrR4dcU5cjtfTSk= X-MBO-RS-META: jqsu4rcxz18in9d1h8gr9ejytmt4e7q6 X-MBO-RS-ID: 130a0f1e83b68094291 Include the Thermal Sensor node in the SpacemiT K1 dtsi with definitions for registers, clocks, and interrupts. Additionally, configure thermal zones for the soc, package, gpu, and clusters to enable temperature monitoring via the thermal framework. Signed-off-by: Shuwei Wu Tested-by: Vincent Legoll # OrangePi-RV2 Tested-by: Gong Shuai --- Changes in v2: - Update compatible to "spacemit,k1-tsensor" --- arch/riscv/boot/dts/spacemit/k1.dtsi | 101 +++++++++++++++++++++++++++++++= ++++ 1 file changed, 101 insertions(+) diff --git a/arch/riscv/boot/dts/spacemit/k1.dtsi b/arch/riscv/boot/dts/spa= cemit/k1.dtsi index 529ec68e9c23..e9952204224e 100644 --- a/arch/riscv/boot/dts/spacemit/k1.dtsi +++ b/arch/riscv/boot/dts/spacemit/k1.dtsi @@ -339,6 +339,96 @@ osc_32k: clock-32k { }; }; =20 + thermal-zones { + soc-thermal { + polling-delay-passive =3D <0>; + polling-delay =3D <0>; + thermal-sensors =3D <&thermal 0>; + + trips { + soc-crit { + temperature =3D <115000>; + hysteresis =3D <0>; + type =3D "critical"; + }; + }; + }; + + package-thermal { + polling-delay-passive =3D <0>; + polling-delay =3D <0>; + thermal-sensors =3D <&thermal 1>; + + trips { + package-crit { + temperature =3D <115000>; + hysteresis =3D <0>; + type =3D "critical"; + }; + }; + }; + + gpu-thermal { + polling-delay-passive =3D <100>; + polling-delay =3D <0>; + thermal-sensors =3D <&thermal 2>; + + trips { + gpu-alert { + temperature =3D <85000>; + hysteresis =3D <2000>; + type =3D "passive"; + }; + + gpu-crit { + temperature =3D <115000>; + hysteresis =3D <0>; + type =3D "critical"; + }; + }; + }; + + cluster0-thermal { + polling-delay-passive =3D <100>; + polling-delay =3D <0>; + thermal-sensors =3D <&thermal 3>; + + trips { + cluster0-alert { + temperature =3D <85000>; + hysteresis =3D <2000>; + type =3D "passive"; + }; + + cluster0-crit { + temperature =3D <115000>; + hysteresis =3D <0>; + type =3D "critical"; + }; + }; + }; + + cluster1-thermal { + polling-delay-passive =3D <100>; + polling-delay =3D <0>; + thermal-sensors =3D <&thermal 4>; + + trips { + cluster1-alert { + temperature =3D <85000>; + hysteresis =3D <2000>; + type =3D "passive"; + }; + + cluster1-crit { + temperature =3D <115000>; + hysteresis =3D <0>; + type =3D "critical"; + }; + }; + }; + }; + soc { compatible =3D "simple-bus"; interrupt-parent =3D <&plic>; @@ -494,6 +584,17 @@ syscon_apbc: system-controller@d4015000 { #reset-cells =3D <1>; }; =20 + thermal: thermal@d4018000 { + compatible =3D "spacemit,k1-tsensor"; + reg =3D <0x0 0xd4018000 0x0 0x100>; + clocks =3D <&syscon_apbc CLK_TSEN>, + <&syscon_apbc CLK_TSEN_BUS>; + clock-names =3D "core", "bus"; + interrupts =3D <61>; + resets =3D <&syscon_apbc RESET_TSEN>; + #thermal-sensor-cells =3D <1>; + }; + i2c6: i2c@d4018800 { compatible =3D "spacemit,k1-i2c"; reg =3D <0x0 0xd4018800 0x0 0x38>; --=20 2.53.0