[PATCH v2 3/3] hwmon: (pmbus/tps1689): Add TPS1689 support
From: Stoyan Bogdanov
Date: Thu Feb 12 2026 - 19:18:31 EST
Extend tps25990 existing driver to support tps1689 eFuse,
since they are sharing command interface and functionality
Update documentation for tps1689
Signed-off-by: Stoyan Bogdanov <sbogdanov@xxxxxxxxxxxx>
---
Documentation/hwmon/tps25990.rst | 15 ++++---
drivers/hwmon/pmbus/tps25990.c | 70 ++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 5 deletions(-)
diff --git a/Documentation/hwmon/tps25990.rst b/Documentation/hwmon/tps25990.rst
index 04faec780d26..e8bc9a550bda 100644
--- a/Documentation/hwmon/tps25990.rst
+++ b/Documentation/hwmon/tps25990.rst
@@ -9,26 +9,31 @@ Supported chips:
Prefix: 'tps25990'
- * Datasheet
+ Datasheet: Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps25990
- Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps25990
+ * TI TPS1689
+
+ Prefix: 'tps1689'
+
+ Datasheet: Publicly available at Texas Instruments website: https://www.ti.com/lit/gpn/tps1689
Author:
Jerome Brunet <jbrunet@xxxxxxxxxxxx>
+ Stoyan Bogdanov <sbogdanov@xxxxxxxxxxxx>
Description
-----------
-This driver implements support for TI TPS25990 eFuse.
+This driver implements support for TI TPS25990 and TI TPS1689 eFuse chips.
This is an integrated, high-current circuit protection and power
management device with PMBUS interface
-Device compliant with:
+Devices are compliant with:
- PMBus rev 1.3 interface.
-Device supports direct format for reading input voltages,
+Devices 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
diff --git a/drivers/hwmon/pmbus/tps25990.c b/drivers/hwmon/pmbus/tps25990.c
index 33f6367f797c..c2da2b89fe2e 100644
--- a/drivers/hwmon/pmbus/tps25990.c
+++ b/drivers/hwmon/pmbus/tps25990.c
@@ -370,6 +370,15 @@ static const struct regulator_desc tps25990_reg_desc[] = {
};
#endif
+struct local_direct_value tps1689_local_info = {
+ .m[TPS25990_VIN_OVF] = 3984,
+ .b[TPS25990_VIN_OVF] = -63750,
+ .R[TPS25990_VIN_OVF] = -3,
+ .m[TPS25990_IIN_OCF] = 7111,
+ .b[TPS25990_IIN_OCF] = -2133,
+ .R[TPS25990_IIN_OCF] = -2,
+};
+
struct local_direct_value tps25590_local_info = {
.m[TPS25990_VIN_OVF] = 10163,
.b[TPS25990_VIN_OVF] = -30081,
@@ -379,6 +388,60 @@ struct local_direct_value tps25590_local_info = {
.R[TPS25990_IIN_OCF] = -6,
};
+static struct pmbus_driver_info tps1689_base_info = {
+ .pages = 1,
+ .format[PSC_VOLTAGE_IN] = direct,
+ .m[PSC_VOLTAGE_IN] = 1166,
+ .b[PSC_VOLTAGE_IN] = 0,
+ .R[PSC_VOLTAGE_IN] = -2,
+ .format[PSC_VOLTAGE_OUT] = direct,
+ .m[PSC_VOLTAGE_OUT] = 1166,
+ .b[PSC_VOLTAGE_OUT] = 0,
+ .R[PSC_VOLTAGE_OUT] = -2,
+ .format[PSC_TEMPERATURE] = direct,
+ .m[PSC_TEMPERATURE] = 140,
+ .b[PSC_TEMPERATURE] = 32103,
+ .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] = 9548,
+ .b[PSC_CURRENT_IN] = 0,
+ .R[PSC_CURRENT_IN] = -6,
+ .format[PSC_CURRENT_OUT] = direct,
+ .m[PSC_CURRENT_OUT] = 24347,
+ .b[PSC_CURRENT_OUT] = 0,
+ .R[PSC_CURRENT_OUT] = -3,
+ .format[PSC_POWER] = direct,
+ .m[PSC_POWER] = 2775,
+ .b[PSC_POWER] = 0,
+ .R[PSC_POWER] = -4,
+ .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 struct pmbus_driver_info tps25990_base_info = {
.pages = 1,
.format[PSC_VOLTAGE_IN] = direct,
@@ -428,18 +491,25 @@ static struct pmbus_driver_info tps25990_base_info = {
#endif
};
+struct tps25990_data data_tps1689 = {
+ .info = &tps1689_base_info,
+ .info_local = &tps1689_local_info,
+};
+
struct tps25990_data data_tps25990 = {
.info = &tps25990_base_info,
.info_local = &tps25590_local_info,
};
static const struct i2c_device_id tps25990_i2c_id[] = {
+ { .name = "tps1689", .driver_data = (kernel_ulong_t)&data_tps1689 },
{ .name = "tps25990", .driver_data = (kernel_ulong_t)&data_tps25990 },
{}
};
MODULE_DEVICE_TABLE(i2c, tps25990_i2c_id);
static const struct of_device_id tps25990_of_match[] = {
+ { .compatible = "ti,tps1689", .data = &data_tps1689 },
{ .compatible = "ti,tps25990", .data = &data_tps25990 },
{}
};
--
2.34.1