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Signed-off-by: Colin Huang --- .../bindings/hwmon/pmbus/infineon,tda38740.yaml | 46 ++++++++++++++++++= ++++ 1 file changed, 46 insertions(+) diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda3874= 0.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38740.ya= ml new file mode 100644 index 000000000000..28eeb85f13df --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38740.yaml @@ -0,0 +1,46 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- + +$id: http://devicetree.org/schemas/hwmon/pmbus/infineon,tda38740.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Infineon TDA38740 and TDA38725 PMBus Synchronous Buck Regulator + +maintainers: + - Colin Huang + +description: | + The Infineon TDA38740/TDA38725 is a 40A/25A single-voltage synchronous + buck regulator with a PMBus interface designed for industrial use. + + Datasheet: + https://www.infineon.com/row/public/documents/24/49/infineon-tda38740-td= a38725-datasheet-en.pdf + +properties: + compatible: + enum: + - infineon,tda38725 + - infineon,tda38740 + + reg: + maxItems: 1 + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells =3D <1>; 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Signed-off-by: Colin Huang --- Documentation/hwmon/index.rst | 1 + Documentation/hwmon/tda38740.rst | 65 +++++++++++++++++++++++++++ drivers/hwmon/pmbus/Kconfig | 9 ++++ drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/tda38740.c | 94 ++++++++++++++++++++++++++++++++++++= ++++ 5 files changed, 170 insertions(+) diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst index f07977a20271..aeff87b3d46d 100644 --- a/Documentation/hwmon/index.rst +++ b/Documentation/hwmon/index.rst @@ -265,6 +265,7 @@ Hardware Monitoring Kernel Drivers sy7636a-hwmon tc654 tc74 + tda38740 thmc50 tmp102 tmp103 diff --git a/Documentation/hwmon/tda38740.rst b/Documentation/hwmon/tda3874= 0.rst new file mode 100644 index 000000000000..55ce12f14914 --- /dev/null +++ b/Documentation/hwmon/tda38740.rst @@ -0,0 +1,65 @@ +.. SPDX-License-Identifier: GPL-2.0-only + +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D +Kernel driver tda38740 +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D + +Supported chips: + * Infineon TDA38740 + * Infineon TDA38725 + + Prefix: 'tda38740' + + Addresses scanned: - + + Datasheet: + https://www.infineon.com/row/public/documents/24/49/infineon-tda3874= 0-tda38725-datasheet-en.pdf + +Author: Colin Huang + +Description +----------- + +The TDA38740 and TDA38725 are single-output synchronous buck regulators wi= th a +PMBus interface. They expose basic voltage, current, power and temperature +telemetry through the standard PMBus hwmon interfaces. + +Sysfs entries +------------- + +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D +curr1_alarm Input current alarm +curr1_input Measured input current +curr1_label "iin" + +curr2_crit Critical maximum output current +curr2_crit_alarm Output current critical high alarm +curr2_input Measured output current +curr2_label "iout" + +in1_crit Critical maximum input voltage +in1_crit_alarm Input voltage critical high alarm +in1_input Measured input voltage +in1_label "vin" + +in2_crit Critical maximum output voltage +in2_crit_alarm Output voltage critical high alarm +in2_input Measured output voltage +in2_label "vout" +in2_lcrit Critical minimum output voltage +in2_lcrit_alarm Output voltage critical low alarm + +power1_alarm Input power alarm +power1_input Measured input power +power1_label "pin" + +power2_input Measured output power +power2_label "pout" + +temp1_crit Critical high temperature +temp1_crit_alarm Chip temperature critical high alarm +temp1_input Measured temperature +temp1_max Maximum temperature +temp1_max_alarm Chip temperature high alarm +=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D =3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D + diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig index bcfdc4ce4c10..e4ca80dd0574 100644 --- a/drivers/hwmon/pmbus/Kconfig +++ b/drivers/hwmon/pmbus/Kconfig @@ -763,6 +763,15 @@ config SENSORS_TDA38640_REGULATOR If you say yes here you get regulator support for Infineon TDA38640 as regulator. =20 +config SENSORS_TDA38740 + tristate "Infineon TDA38725/TDA38740" + help + If you say yes here you get hardware monitoring support for Infineon + TDA38725 and TDA38740. + + This driver can also be built as a module. If so, the module will + be called tda38740. + config SENSORS_TPS25990 tristate "TI TPS25990" help diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile index e288fe72a437..eb06d47816fd 100644 --- a/drivers/hwmon/pmbus/Makefile +++ b/drivers/hwmon/pmbus/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_SENSORS_STEF48H28) +=3D stef48h28.o obj-$(CONFIG_SENSORS_SQ24860) +=3D sq24860.o obj-$(CONFIG_SENSORS_STPDDC60) +=3D stpddc60.o obj-$(CONFIG_SENSORS_TDA38640) +=3D tda38640.o +obj-$(CONFIG_SENSORS_TDA38740) +=3D tda38740.o obj-$(CONFIG_SENSORS_TPS25990) +=3D tps25990.o obj-$(CONFIG_SENSORS_TPS40422) +=3D tps40422.o obj-$(CONFIG_SENSORS_TPS53679) +=3D tps53679.o diff --git a/drivers/hwmon/pmbus/tda38740.c b/drivers/hwmon/pmbus/tda38740.c new file mode 100644 index 000000000000..6d3e9884f733 --- /dev/null +++ b/drivers/hwmon/pmbus/tda38740.c @@ -0,0 +1,94 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Hardware monitoring driver for Infineon TDA38725/TDA38740 + * + * Copyright (c) 2023 9elements GmbH + * + */ + +#include +#include +#include +#include +#include +#include "pmbus.h" + +/* + * TDA38725/TDA38740 only support Linear format for VOUT related commands, + * with exponents in the range of -8 to -12 (see datasheet VOUT_MODE + * description). Direct format is not supported by this device. + */ +static int tda38740_identify(struct i2c_client *client, + struct pmbus_driver_info *info) +{ + int vout_mode; + + vout_mode =3D pmbus_read_byte_data(client, 0, PMBUS_VOUT_MODE); + if (vout_mode < 0 || vout_mode =3D=3D 0xff) + return vout_mode < 0 ? vout_mode : -ENODEV; + + if ((vout_mode >> 5) !=3D 0) + return -ENODEV; + + info->format[PSC_VOLTAGE_OUT] =3D linear; + + return 0; +} + +static struct pmbus_driver_info tda38740_info =3D { + .pages =3D 1, + .format[PSC_VOLTAGE_IN] =3D linear, + .format[PSC_CURRENT_OUT] =3D linear, + .format[PSC_CURRENT_IN] =3D linear, + .format[PSC_POWER] =3D linear, + .format[PSC_TEMPERATURE] =3D linear, + .func[0] =3D PMBUS_HAVE_VIN | PMBUS_HAVE_STATUS_INPUT + | PMBUS_HAVE_TEMP | PMBUS_HAVE_STATUS_TEMP + | PMBUS_HAVE_IIN + | PMBUS_HAVE_VOUT | PMBUS_HAVE_STATUS_VOUT + | PMBUS_HAVE_IOUT | PMBUS_HAVE_STATUS_IOUT + | PMBUS_HAVE_POUT | PMBUS_HAVE_PIN, + .identify =3D tda38740_identify, +}; + +static int tda38740_probe(struct i2c_client *client) +{ + struct tda38740_data *data; + + data =3D devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + memcpy(&data->info, &tda38740_info, sizeof(tda38740_info)); + + return pmbus_do_probe(client, &data->info); +} + +static const struct i2c_device_id tda38740_id[] =3D { + { .name =3D "tda38725"}, + { .name =3D "tda38740"}, + {} +}; +MODULE_DEVICE_TABLE(i2c, tda38740_id); + +static const struct of_device_id __maybe_unused tda38740_of_match[] =3D { + { .compatible =3D "infineon,tda38725"}, + { .compatible =3D "infineon,tda38740"}, + {} +}; +MODULE_DEVICE_TABLE(of, tda38740_of_match); + +static struct i2c_driver tda38740_driver =3D { + .driver =3D { + .name =3D "tda38740", + .of_match_table =3D of_match_ptr(tda38740_of_match), + }, + .probe =3D tda38740_probe, + .id_table =3D tda38740_id, +}; + +module_i2c_driver(tda38740_driver); + +MODULE_DESCRIPTION("PMBus driver for Infineon TDA38725/TDA38740"); +MODULE_LICENSE("GPL"); +MODULE_IMPORT_NS("PMBUS"); --=20 2.34.1