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Message-ID: <ece49be3-0605-42a2-8573-8db256c9f9c2@ti.com>
Date: Tue, 1 Oct 2024 12:33:10 +0530
From: Vaishnav Achath <vaishnav.a@...com>
To: Jerome Brunet <jbrunet@...libre.com>, Jean Delvare <jdelvare@...e.com>,
Guenter Roeck <linux@...ck-us.net>, Rob Herring <robh@...nel.org>,
Krzysztof
Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>, Jonathan
Corbet <corbet@....net>,
Delphine CC Chiu <Delphine_CC_Chiu@...ynn.com>,
Naresh Solanki <naresh.solanki@...ements.com>,
Patrick Rudolph
<patrick.rudolph@...ements.com>
CC: <linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>,
<linux-i2c@...r.kernel.org>
Subject: Re: [PATCH v2 3/3] hwmon: (pmbus/tps25990): add initial support
Hi Jerome,
On 20/09/24 22:26, Jerome Brunet wrote:
> Add initial support for the Texas Instruments TPS25990 eFuse.
> This adds the basic PMBUS telemetry support for the device.
>
> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
> ---
> Documentation/hwmon/index.rst | 1 +
> Documentation/hwmon/tps25990.rst | 148 ++++++++++++++
> drivers/hwmon/pmbus/Kconfig | 17 ++
> drivers/hwmon/pmbus/Makefile | 1 +
> drivers/hwmon/pmbus/tps25990.c | 427 +++++++++++++++++++++++++++++++++++++++
> 5 files changed, 594 insertions(+)
>
> diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
> index ea3b5be8fe4f..205ed31c66ff 100644
> --- a/Documentation/hwmon/index.rst
> +++ b/Documentation/hwmon/index.rst
> @@ -234,6 +234,7 @@ Hardware Monitoring Kernel Drivers
> tmp464
> tmp513
> tps23861
> + tps25990
> tps40422
> tps53679
> tps546d24
> diff --git a/Documentation/hwmon/tps25990.rst b/Documentation/hwmon/tps25990.rst
> new file mode 100644
> index 000000000000..ed9e74d43e2c
> --- /dev/null
> +++ b/Documentation/hwmon/tps25990.rst
> @@ -0,0 +1,148 @@
> +.. SPDX-License-Identifier: GPL-2.0
> +
> +Kernel driver tps25990
> +======================
> +
> +Supported chips:
> +
> + * TI TPS25990
> +
> + Prefix: 'tps25990'
> +
> + * Datasheet
> +
> + Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps25990
> +
> +Author:
> +
> + Jerome Brunet <jbrunet@...libre.com>
> +
> +Description
> +-----------
> +
> +This driver implements support for TI TPS25990 eFuse.
> +This is an integrated, high-current circuit protection and power
> +management device with PMBUS interface
> +
> +Device compliant with:
> +
> +- PMBus rev 1.3 interface.
> +
> +Device supports direct format for reading input voltages,
> +output voltage, input current, input power and temperature.
> +
> +Due to the specificities of the chip, all history reset attributes
> +are tied together. Resetting the history of a sensor, resets the
> +history of all the sensors.
> +
> +The driver exports the following attributes via the 'sysfs' files
> +for input current:
> +
> +**curr1_average**
> +
> +**curr1_crit**
> +
> +**curr1_crit_alarm**
> +
> +**curr1_highest**
> +
> +**curr1_input**
> +
> +**curr1_label**
> +
> +**curr1_max**
> +
> +**curr1_max_alarm**
> +
> +**curr1_reset_history**
> +
> +The driver provides the following attributes for main input voltage:
> +
> +**in1_average**
> +
> +**in1_crit**
> +
> +**in1_crit_alarm**
> +
> +**in1_highest**
> +
> +**in1_input**
> +
> +**in1_label**
> +
> +**in1_lcrit**
> +
> +**in1_lcrit_alarm**
> +
> +**in1_lowest**
> +
> +**in1_max**
> +
> +**in1_max_alarm**
> +
> +**in1_min**
> +
> +**in1_min_alarm**
> +
> +**in1_reset_history**
> +
> +The driver provides the following attributes for auxiliary input voltage:
> +
> +**in2_input**
> +
> +**in2_label**
> +
> +The driver provides the following attributes for output voltage:
> +
> +**in3_average**
> +
> +**in3_input**
> +
> +**in3_label**
> +
> +**in3_lowest**
> +
> +**in3_min**
> +
> +**in3_min_alarm**
> +
> +**in3_reset_history**
> +
> +The driver provides the following attributes for input power:
> +
> +**power1_alarm**
> +
> +**power1_average**
> +
> +**power1_input**
> +
> +**power1_input_highest**
> +
> +**power1_label**
> +
> +**power1_max**
> +
> +**power1_reset_history**
> +
> +The driver provides the following attributes for temperature:
> +
> +**temp1_average**
> +
> +**temp1_crit**
> +
> +**temp1_crit_alarm**
> +
> +**temp1_highest**
> +
> +**temp1_input**
> +
> +**temp1_max**
> +
> +**temp1_max_alarm**
> +
> +**temp1_reset_history**
> +
> +The driver provides the following attributes for sampling:
> +
> +**samples**
> +
> diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
> index a4f02cad92fd..a3fd442e0277 100644
> --- a/drivers/hwmon/pmbus/Kconfig
> +++ b/drivers/hwmon/pmbus/Kconfig
> @@ -510,6 +510,23 @@ config SENSORS_TDA38640_REGULATOR
> If you say yes here you get regulator support for Infineon
> TDA38640 as regulator.
>
> +config SENSORS_TPS25990
> + tristate "TI TPS25990"
> + help
> + If you say yes here you get hardware monitoring support for TI
> + TPS25990.
> +
> + This driver can also be built as a module. If so, the module will
> + be called tps25990.
> +
> +config SENSORS_TPS25990_REGULATOR
> + bool "Regulator support for TPS25990 and compatibles"
> + depends on SENSORS_TPS25990 && REGULATOR
> + default SENSORS_TPS25990
> + help
> + If you say yes here you get regulator support for Texas Instruments
> + TPS25990.
> +
> config SENSORS_TPS40422
> tristate "TI TPS40422"
> help
> diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
> index d00bcc758b97..3d3183f8d2a7 100644
> --- a/drivers/hwmon/pmbus/Makefile
> +++ b/drivers/hwmon/pmbus/Makefile
> @@ -51,6 +51,7 @@ obj-$(CONFIG_SENSORS_PXE1610) += pxe1610.o
> obj-$(CONFIG_SENSORS_Q54SJ108A2) += q54sj108a2.o
> obj-$(CONFIG_SENSORS_STPDDC60) += stpddc60.o
> obj-$(CONFIG_SENSORS_TDA38640) += tda38640.o
> +obj-$(CONFIG_SENSORS_TPS25990) += tps25990.o
> obj-$(CONFIG_SENSORS_TPS40422) += tps40422.o
> obj-$(CONFIG_SENSORS_TPS53679) += tps53679.o
> obj-$(CONFIG_SENSORS_TPS546D24) += tps546d24.o
> diff --git a/drivers/hwmon/pmbus/tps25990.c b/drivers/hwmon/pmbus/tps25990.c
> new file mode 100644
> index 000000000000..03848d671c10
> --- /dev/null
> +++ b/drivers/hwmon/pmbus/tps25990.c
> @@ -0,0 +1,427 @@
> +// SPDX-License-Identifier: GPL-2.0
> +//
> +// Copyright (c) 2024 BayLibre, SAS.
> +// Author: Jerome Brunet <jbrunet@...libre.com>
> +
> +#include <linux/debugfs.h>
> +#include <linux/err.h>
> +#include <linux/hwmon-sysfs.h>
> +#include <linux/i2c.h>
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +
> +#include "pmbus.h"
> +
> +#define TPS25990_READ_VAUX 0xd0
> +#define TPS25990_READ_VIN_MIN 0xd1
> +#define TPS25990_READ_VIN_PEAK 0xd2
> +#define TPS25990_READ_IIN_PEAK 0xd4
> +#define TPS25990_READ_PIN_PEAK 0xd5
> +#define TPS25990_READ_TEMP_AVG 0xd6
> +#define TPS25990_READ_TEMP_PEAK 0xd7
> +#define TPS25990_READ_VOUT_MIN 0xda
> +#define TPS25990_READ_VIN_AVG 0xdc
> +#define TPS25990_READ_VOUT_AVG 0xdd
> +#define TPS25990_READ_IIN_AVG 0xde
> +#define TPS25990_READ_PIN_AVG 0xdf
> +#define TPS25990_VIREF 0xe0
> +#define TPS25990_PK_MIN_AVG 0xea
> +#define PK_MIN_AVG_RST_PEAK BIT(7)
> +#define PK_MIN_AVG_RST_AVG BIT(6)
> +#define PK_MIN_AVG_RST_MIN BIT(5)
> +#define PK_MIN_AVG_AVG_CNT GENMASK(2, 0)
> +#define TPS25990_MFR_WRITE_PROTECT 0xf8
> +#define TPS25990_UNLOCKED BIT(7)
> +
> +#define TPS25990_8B_SHIFT 2
> +#define TPS25990_VIN_OVF_NUM 525100
> +#define TPS25990_VIN_OVF_DIV 10163
> +#define TPS25990_VIN_OVF_OFF 155
> +#define TPS25990_IIN_OCF_NUM 953800
> +#define TPS25990_IIN_OCF_DIV 129278
> +#define TPS25990_IIN_OCF_OFF 157
> +
> +#define PK_MIN_AVG_RST_MASK (PK_MIN_AVG_RST_PEAK | \
> + PK_MIN_AVG_RST_AVG | \
> + PK_MIN_AVG_RST_MIN)
> +
> +/*
> + * Arbitrary default Rimon value: 1kOhm
> + * This correspond to an overcurrent limit of 55A, close to the specified limit
> + * of un-stacked TPS25990 and makes further calculation easier to setup in
> + * sensor.conf, if necessary
> + */
> +#define TPS25990_DEFAULT_RIMON 1000000000
> +
> +static void tps25990_set_m(int *m, u32 rimon)
> +{
> + u64 val = ((u64)*m) * rimon;
> +
> + /* Make sure m fits the s32 type */
> + *m = DIV_ROUND_CLOSEST_ULL(val, 1000000);
> +}
> +
> +static int tps25990_mfr_write_protect_set(struct i2c_client *client,
> + u8 protect)
> +{
> + /*
> + * The chip has a single protection mode, set it regardless of
> + * the specific protection requested
> + */
> + return pmbus_write_byte_data(client, -1, TPS25990_MFR_WRITE_PROTECT,
> + protect ? 0x0 : 0xa2);
> +}
> +
> +static int tps25990_mfr_write_protect_get(struct i2c_client *client)
> +{
> + int ret = pmbus_read_byte_data(client, -1, TPS25990_MFR_WRITE_PROTECT);
> +
> + if (ret < 0)
> + return ret;
> +
> + return (ret & TPS25990_UNLOCKED) ? 0 : PB_WP_ALL;
> +}
> +
> +static int tps25990_read_word_data(struct i2c_client *client,
> + int page, int phase, int reg)
> +{
> + int ret;
> +
> + switch (reg) {
> + case PMBUS_VIRT_READ_VIN_MAX:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VIN_PEAK);
> + break;
> +
> + case PMBUS_VIRT_READ_VIN_MIN:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VIN_MIN);
> + break;
> +
> + case PMBUS_VIRT_READ_VIN_AVG:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VIN_AVG);
> + break;
> +
> + case PMBUS_VIRT_READ_VOUT_MIN:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VOUT_MIN);
> + break;
> +
> + case PMBUS_VIRT_READ_VOUT_AVG:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VOUT_AVG);
> + break;
> +
> + case PMBUS_VIRT_READ_IIN_AVG:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_IIN_AVG);
> + break;
> +
> + case PMBUS_VIRT_READ_IIN_MAX:
> + return TPS25990_READ_IIN_PEAK;
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_IIN_PEAK);
> + break;
> +
> + case PMBUS_VIRT_READ_TEMP_AVG:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_TEMP_AVG);
> + break;
> +
> + case PMBUS_VIRT_READ_TEMP_MAX:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_TEMP_PEAK);
> + break;
> +
> + case PMBUS_VIRT_READ_PIN_AVG:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_PIN_AVG);
> + break;
> +
> + case PMBUS_VIRT_READ_PIN_MAX:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_PIN_PEAK);
> + break;
> +
> + case PMBUS_VIRT_READ_VMON:
> + ret = pmbus_read_word_data(client, page, phase,
> + TPS25990_READ_VAUX);
> + break;
> +
> + case PMBUS_VIN_UV_WARN_LIMIT:
> + case PMBUS_VIN_UV_FAULT_LIMIT:
> + case PMBUS_VIN_OV_WARN_LIMIT:
> + case PMBUS_VOUT_UV_WARN_LIMIT:
> + case PMBUS_IIN_OC_WARN_LIMIT:
> + case PMBUS_OT_WARN_LIMIT:
> + case PMBUS_OT_FAULT_LIMIT:
> + case PMBUS_PIN_OP_WARN_LIMIT:
> + /*
> + * These registers provide an 8 bits value instead of a
> + * 10bits one. Just shifting twice the register value is
> + * enough to make the sensor type conversion work, even
> + * if the datasheet provides different m, b and R for
> + * those.
> + */
> + ret = pmbus_read_word_data(client, page, phase, reg);
> + if (ret < 0)
> + break;
> + ret <<= TPS25990_8B_SHIFT;
> + break;
> +
> + case PMBUS_VIN_OV_FAULT_LIMIT:
> + ret = pmbus_read_word_data(client, page, phase, reg);
> + if (ret < 0)
> + break;
> + ret = DIV_ROUND_CLOSEST(ret * TPS25990_VIN_OVF_NUM,
> + TPS25990_VIN_OVF_DIV);
> + ret += TPS25990_VIN_OVF_OFF;
> + break;
> +
> + case PMBUS_IIN_OC_FAULT_LIMIT:
> + /*
> + * VIREF directly sets the over-current limit at which the eFuse
> + * will turn the FET off and trigger a fault. Expose it through
> + * this generic property instead of a manufacturer specific one.
> + */
> + ret = pmbus_read_byte_data(client, page, TPS25990_VIREF);
> + if (ret < 0)
> + break;
> + ret = DIV_ROUND_CLOSEST(ret * TPS25990_IIN_OCF_NUM,
> + TPS25990_IIN_OCF_DIV);
> + ret += TPS25990_IIN_OCF_OFF;
> + break;
> +
> + case PMBUS_VIRT_SAMPLES:
> + ret = pmbus_read_byte_data(client, page, TPS25990_PK_MIN_AVG);
> + if (ret < 0)
> + break;
> + ret = 1 << FIELD_GET(PK_MIN_AVG_AVG_CNT, ret);
> + break;
> +
> + case PMBUS_VIRT_RESET_TEMP_HISTORY:
> + case PMBUS_VIRT_RESET_VIN_HISTORY:
> + case PMBUS_VIRT_RESET_IIN_HISTORY:
> + case PMBUS_VIRT_RESET_PIN_HISTORY:
> + case PMBUS_VIRT_RESET_VOUT_HISTORY:
> + ret = 0;
> + break;
> +
> + default:
> + ret = -ENODATA;
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int tps25990_write_word_data(struct i2c_client *client,
> + int page, int reg, u16 value)
> +{
> + int ret;
> +
> + switch (reg) {
> + case PMBUS_VIN_UV_WARN_LIMIT:
> + case PMBUS_VIN_UV_FAULT_LIMIT:
> + case PMBUS_VIN_OV_WARN_LIMIT:
> + case PMBUS_VOUT_UV_WARN_LIMIT:
> + case PMBUS_IIN_OC_WARN_LIMIT:
> + case PMBUS_OT_WARN_LIMIT:
> + case PMBUS_OT_FAULT_LIMIT:
> + case PMBUS_PIN_OP_WARN_LIMIT:
> + value >>= TPS25990_8B_SHIFT;
> + value = clamp_val(value, 0, 0xff);
> + ret = pmbus_write_word_data(client, page, reg, value);
> + break;
> +
> + case PMBUS_VIN_OV_FAULT_LIMIT:
> + value -= TPS25990_VIN_OVF_OFF;
> + value = DIV_ROUND_CLOSEST(((unsigned int)value) * TPS25990_VIN_OVF_DIV,
> + TPS25990_VIN_OVF_NUM);
> + value = clamp_val(value, 0, 0xf);
> + ret = pmbus_write_word_data(client, page, reg, value);
> + break;
> +
> + case PMBUS_IIN_OC_FAULT_LIMIT:
> + value -= TPS25990_IIN_OCF_OFF;
> + value = DIV_ROUND_CLOSEST(((unsigned int)value) * TPS25990_IIN_OCF_DIV,
> + TPS25990_IIN_OCF_NUM);
> + value = clamp_val(value, 0, 0x3f);
> + ret = pmbus_write_byte_data(client, page, TPS25990_VIREF, value);
> + break;
> +
> + case PMBUS_VIRT_SAMPLES:
> + value = clamp_val(value, 1, 1 << PK_MIN_AVG_AVG_CNT);
> + value = ilog2(value);
> + ret = pmbus_update_byte_data(client, page, TPS25990_PK_MIN_AVG,
> + PK_MIN_AVG_AVG_CNT,
> + FIELD_PREP(PK_MIN_AVG_AVG_CNT, value));
> + break;
> +
> + case PMBUS_VIRT_RESET_TEMP_HISTORY:
> + case PMBUS_VIRT_RESET_VIN_HISTORY:
> + case PMBUS_VIRT_RESET_IIN_HISTORY:
> + case PMBUS_VIRT_RESET_PIN_HISTORY:
> + case PMBUS_VIRT_RESET_VOUT_HISTORY:
> + /*
> + * TPS25990 has history resets based on MIN/AVG/PEAK instead of per
> + * sensor type. Exposing this quirk in hwmon is not desirable so
> + * reset MIN, AVG and PEAK together. Even is there effectively only
> + * one reset, which resets everything, expose the 5 entries so
> + * userspace is not required map a sensor type to another to trigger
> + * a reset
> + */
> + ret = pmbus_update_byte_data(client, 0, TPS25990_PK_MIN_AVG,
> + PK_MIN_AVG_RST_MASK,
> + PK_MIN_AVG_RST_MASK);
> + break;
> +
> + default:
> + ret = -ENODATA;
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int tps25990_read_byte_data(struct i2c_client *client,
> + int page, int reg)
> +{
> + int ret;
> +
> + switch (reg) {
> + case PMBUS_WRITE_PROTECT:
> + ret = tps25990_mfr_write_protect_get(client);
> + break;
> +
> + default:
> + ret = -ENODATA;
> + break;
> + }
> +
> + return ret;
> +}
> +
> +static int tps25990_write_byte_data(struct i2c_client *client,
> + int page, int reg, u8 byte)
> +{
> + int ret;
> +
> + switch (reg) {
> + case PMBUS_WRITE_PROTECT:
> + ret = tps25990_mfr_write_protect_set(client, byte);
> + break;
> +
> + default:
> + ret = -ENODATA;
> + break;
> + }
> +
> + return ret;
> +}
> +
> +#if IS_ENABLED(CONFIG_SENSORS_TPS25990_REGULATOR)
> +static const struct regulator_desc tps25990_reg_desc[] = {
> + PMBUS_REGULATOR_ONE("vout"),
> +};
> +#endif
> +
> +static const struct pmbus_driver_info tps25990_base_info = {
> + .pages = 1,
> + .format[PSC_VOLTAGE_IN] = direct,
> + .m[PSC_VOLTAGE_IN] = 5251,
> + .b[PSC_VOLTAGE_IN] = 0,
> + .R[PSC_VOLTAGE_IN] = -2,
> + .format[PSC_VOLTAGE_OUT] = direct,
> + .m[PSC_VOLTAGE_OUT] = 5251,
> + .b[PSC_VOLTAGE_OUT] = 0,
> + .R[PSC_VOLTAGE_OUT] = -2,
> + .format[PSC_TEMPERATURE] = direct,
> + .m[PSC_TEMPERATURE] = 140,
> + .b[PSC_TEMPERATURE] = 32100,
> + .R[PSC_TEMPERATURE] = -2,
> + /*
> + * Current and Power measurement depends on the ohm value
> + * of Rimon. m is multiplied by 1000 below to have an integer
> + * and -3 is added to R to compensate.
> + */
> + .format[PSC_CURRENT_IN] = direct,
> + .m[PSC_CURRENT_IN] = 9538,
> + .b[PSC_CURRENT_IN] = 0,
> + .R[PSC_CURRENT_IN] = -6,
> + .format[PSC_POWER] = direct,
> + .m[PSC_POWER] = 4901,
> + .b[PSC_POWER] = 0,
> + .R[PSC_POWER] = -7,
> + .func[0] = (PMBUS_HAVE_VIN |
> + PMBUS_HAVE_VOUT |
> + PMBUS_HAVE_VMON |
> + PMBUS_HAVE_IIN |
> + PMBUS_HAVE_PIN |
> + PMBUS_HAVE_TEMP |
> + PMBUS_HAVE_STATUS_VOUT |
> + PMBUS_HAVE_STATUS_IOUT |
> + PMBUS_HAVE_STATUS_INPUT |
> + PMBUS_HAVE_STATUS_TEMP |
> + PMBUS_HAVE_SAMPLES),
> + .read_word_data = tps25990_read_word_data,
> + .write_word_data = tps25990_write_word_data,
> + .read_byte_data = tps25990_read_byte_data,
> + .write_byte_data = tps25990_write_byte_data,
> +
> +#if IS_ENABLED(CONFIG_SENSORS_TPS25990_REGULATOR)
> + .reg_desc = tps25990_reg_desc,
> + .num_regulators = ARRAY_SIZE(tps25990_reg_desc),
> +#endif
> +};
> +
> +static const struct i2c_device_id tps25990_i2c_id[] = {
> + { "tps25990" },
> + {}
> +};
> +MODULE_DEVICE_TABLE(i2c, tps25990_i2c_id);
> +
> +static const struct of_device_id tps25990_of_match[] = {
> + { .compatible = "ti,tps25990" },
> + {}
> +};
> +MODULE_DEVICE_TABLE(of, tps25990_of_match);
> +
> +static int tps25990_probe(struct i2c_client *client)
> +{
> + struct device *dev = &client->dev;
> + struct pmbus_driver_info *info;
> + u32 rimon = TPS25990_DEFAULT_RIMON;
> + int ret;
> +
> + ret = device_property_read_u32(dev, "ti,rimon-micro-ohms", &rimon);
> + if (ret < 0 && ret != -EINVAL)
> + return dev_err_probe(dev, ret, "failed to get rimon\n");
> +
> + info = devm_kmemdup(dev, &tps25990_base_info, sizeof(*info), GFP_KERNEL);
> + if (!info)
> + return -ENOMEM;
> +
> + /* Adapt the current and power scale for each instance */
> + tps25990_set_m(&info->m[PSC_CURRENT_IN], rimon);
> + tps25990_set_m(&info->m[PSC_POWER], rimon);
> +
> + return pmbus_do_probe(client, info);
> +}
> +
> +static struct i2c_driver tps25990_driver = {
> + .driver = {
> + .name = "tps25990",
> + .of_match_table = tps25990_of_match,
> + },
> + .probe = tps25990_probe,
> + .id_table = tps25990_i2c_id,
> +};
> +module_i2c_driver(tps25990_driver);
> +
> +MODULE_AUTHOR("Jerome Brunet <jbrunet@...libre.com>");
> +MODULE_DESCRIPTION("PMBUS driver for TPS25990 eFuse");
> +MODULE_LICENSE("GPL");
> +MODULE_IMPORT_NS(PMBUS);
Tested basic telemetry and control functionality on TPS25990 EVM with
J722S EVM :
https://gist.github.com/vaishnavachath/5d2f3190955799f72fda1374aab36cb0
Tested-by: Vaishnav Achath <vaishnav.a@...com>
Thanks and Regards,
Vaishnav
>
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