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Tue, 21 Jul 2026 02:59:48 -0700 (PDT) From: Svyatoslav Ryhel To: Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Svyatoslav Ryhel Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 1/3] dt-bindings: hwmon: Document SMSC EMC1402/1403/1404/1428 Date: Tue, 21 Jul 2026 12:59:33 +0300 Message-ID: <20260721095935.439174-2-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260721095935.439174-1-clamor95@gmail.com> References: <20260721095935.439174-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Document the basic hardware layout of SMSC (now Microchip) EMC1402/1403/1404/1428 thermal sensors. Signed-off-by: Svyatoslav Ryhel --- .../bindings/hwmon/smsc,emc1403.yaml | 203 ++++++++++++++++++ 1 file changed, 203 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/smsc,emc1403.ya= ml diff --git a/Documentation/devicetree/bindings/hwmon/smsc,emc1403.yaml b/Do= cumentation/devicetree/bindings/hwmon/smsc,emc1403.yaml new file mode 100644 index 0000000000000..d7873a37c3295 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/smsc,emc1403.yaml @@ -0,0 +1,203 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/hwmon/smsc,emc1403.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SMSC EMC1402/1403/1404/1428 thermal sensors + +maintainers: + - Svyatoslav Ryhel + +properties: + compatible: + oneOf: + - enum: + - smsc,emc1402 + - smsc,emc1403 + - smsc,emc1404 + - smsc,emc1428 + + - items: + - enum: + - smsc,emc1412 + - smsc,emc1422 + - smsc,emc1442 + - const: smsc,emc1402 + + - items: + - enum: + - smsc,emc1413 + - smsc,emc1423 + - const: smsc,emc1403 + + - items: + - enum: + - smsc,emc1414 + - smsc,emc1424 + - const: smsc,emc1404 + + - items: + - enum: + - smsc,emc1438 + - const: smsc,emc1428 + + interrupts: + items: + - description: Sensors "ALERT" pin output. + + reg: + maxItems: 1 + + "#thermal-sensor-cells": + const: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + + vdd-supply: true + +required: + - compatible + - reg + +patternProperties: + "^channel@([0-7])$": + type: object + description: Represents channels of the device and their specific conf= iguration. + + properties: + reg: + description: The channel number. 0 is local channel, 1-7 are remot= e channels. + items: + minimum: 0 + maximum: 7 + + label: + description: A descriptive name for this channel, like "ambient" o= r "psu". + + required: + - reg + + additionalProperties: false + +allOf: + - if: + properties: + compatible: + contains: + enum: + - smsc,emc1402 + then: + patternProperties: + "^channel@([0-7])$": + properties: + reg: + items: + maximum: 1 + + - if: + properties: + compatible: + contains: + enum: + - smsc,emc1403 + then: + patternProperties: + "^channel@([0-7])$": + properties: + reg: + items: + maximum: 2 + + - if: + properties: + compatible: + contains: + enum: + - smsc,emc1404 + then: + patternProperties: + "^channel@([0-7])$": + properties: + reg: + items: + maximum: 3 + +additionalProperties: false + +examples: + - | + #include + + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + sensor@4c { + compatible =3D "smsc,emc1412", "smsc,emc1402"; + reg =3D <0x4c>; + + interrupt-parent =3D <&gpio>; + interrupts =3D <4 IRQ_TYPE_LEVEL_LOW>; + + vdd-supply =3D <&vdd_3v3_sys>; + #thermal-sensor-cells =3D <1>; + }; + }; + - | + i2c { + #address-cells =3D <1>; + #size-cells =3D <0>; + + sensor@29 { + compatible =3D "smsc,emc1428"; + reg =3D <0x29>; + + #address-cells =3D <1>; + #size-cells =3D <0>; + + channel@0 { + reg =3D <0x0>; + label =3D "local"; + }; + + channel@1 { + reg =3D <0x1>; + label =3D "chan1"; + }; + + channel@2 { + reg =3D <0x2>; + label =3D "chan2"; + }; + + channel@3 { + reg =3D <0x3>; + label =3D "chan3"; + }; + + channel@4 { + reg =3D <0x4>; + label =3D "chan4"; + }; + + channel@5 { + reg =3D <0x5>; + label =3D "chan5"; + }; + + channel@6 { + reg =3D <0x6>; + label =3D "chan6"; + }; + + channel@7 { + reg =3D <0x7>; + label =3D "chan7"; + }; + }; + }; --=20 2.53.0 From nobody Sat Jul 25 00:56:32 2026 Received: from mail-wm1-f43.google.com (mail-wm1-f43.google.com [209.85.128.43]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 657FD44C666 for ; 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Tue, 21 Jul 2026 02:59:50 -0700 (PDT) Received: from xeon ([188.163.112.51]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47f63e499c2sm35228691f8f.4.2026.07.21.02.59.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2026 02:59:50 -0700 (PDT) From: Svyatoslav Ryhel To: Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Svyatoslav Ryhel Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 2/3] hwmon: (emc1403) Convert to use OF bindings Date: Tue, 21 Jul 2026 12:59:34 +0300 Message-ID: <20260721095935.439174-3-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260721095935.439174-1-clamor95@gmail.com> References: <20260721095935.439174-1-clamor95@gmail.com> 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 From: Jonas Schw=C3=B6bel Add OF match compatible table to be able to use this driver with Device Trees. Signed-off-by: Jonas Schw=C3=B6bel Signed-off-by: Svyatoslav Ryhel Reviewed-by: Guenter Roeck --- drivers/hwmon/emc1403.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c index cd753b38709f2..b7ab6069ec7b1 100644 --- a/drivers/hwmon/emc1403.c +++ b/drivers/hwmon/emc1403.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include #include @@ -659,14 +660,14 @@ static int emc1403_probe(struct i2c_client *client) { struct thermal_data *data; struct device *hwmon_dev; - const struct i2c_device_id *id =3D i2c_match_id(emc1403_idtable, client); =20 data =3D devm_kzalloc(&client->dev, sizeof(struct thermal_data), GFP_KERNEL); if (!data) return -ENOMEM; =20 - data->chip =3D id->driver_data; + data->chip =3D (uintptr_t)i2c_get_match_data(client); + data->regmap =3D devm_regmap_init_i2c(client, &emc1403_regmap_config); if (IS_ERR(data->regmap)) return PTR_ERR(data->regmap); @@ -682,10 +683,21 @@ static const unsigned short emc1403_address_list[] = =3D { 0x18, 0x1c, 0x29, 0x3c, 0x4c, 0x4d, 0x5c, I2C_CLIENT_END }; 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Tue, 21 Jul 2026 02:59:52 -0700 (PDT) Received: from xeon ([188.163.112.51]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-47f63e499c2sm35228691f8f.4.2026.07.21.02.59.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Jul 2026 02:59:51 -0700 (PDT) From: Svyatoslav Ryhel To: Jean Delvare , Guenter Roeck , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Svyatoslav Ryhel Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v3 3/3] hwmon: (emc1403) Add regulator support Date: Tue, 21 Jul 2026 12:59:35 +0300 Message-ID: <20260721095935.439174-4-clamor95@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260721095935.439174-1-clamor95@gmail.com> References: <20260721095935.439174-1-clamor95@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for VDD power supply for this sensor. It is required on some devices for the sensor to start up and work properly. Signed-off-by: Svyatoslav Ryhel Reviewed-by: Guenter Roeck --- drivers/hwmon/emc1403.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/hwmon/emc1403.c b/drivers/hwmon/emc1403.c index b7ab6069ec7b1..5a472760f8d80 100644 --- a/drivers/hwmon/emc1403.c +++ b/drivers/hwmon/emc1403.c @@ -19,6 +19,7 @@ #include #include #include +#include #include =20 #define THERMAL_PID_REG 0xfd @@ -660,6 +661,12 @@ static int emc1403_probe(struct i2c_client *client) { struct thermal_data *data; struct device *hwmon_dev; + int ret; + + ret =3D devm_regulator_get_enable(&client->dev, "vdd"); + if (ret) + return dev_err_probe(&client->dev, ret, + "Failed to enable regulator\n"); =20 data =3D devm_kzalloc(&client->dev, sizeof(struct thermal_data), GFP_KERNEL); --=20 2.53.0