[PATCH v4 4/4] hwmon: (pmbus/tps25990): Add TPS1689 support
From: Stoyan Bogdanov
Date: Fri May 22 2026 - 04:26:59 EST
Extend the existing TPS25990 driver to support the TPS1689 eFuse,
as both devices share the same command interface and functionality.
Update the documentation to include TPS1689 support.
Signed-off-by: Stoyan Bogdanov <sbogdanov@xxxxxxxxxxxx>
---
Documentation/hwmon/tps25990.rst | 15 +++++---
drivers/hwmon/pmbus/tps25990.c | 66 +++++++++++++++++++++++++++++++-
2 files changed, 74 insertions(+), 7 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 1e252844217b..720e134f1892 100644
--- a/drivers/hwmon/pmbus/tps25990.c
+++ b/drivers/hwmon/pmbus/tps25990.c
@@ -42,6 +42,7 @@
PK_MIN_AVG_RST_MIN)
enum chips {
+ tps1689,
tps25990,
};
@@ -286,7 +287,6 @@ static int tps25990_write_word_data(struct i2c_client *client,
value = clamp_val(value, 0, 0xff);
ret = pmbus_write_word_data(client, page, reg, value);
break;
-
case PMBUS_VIN_OV_FAULT_LIMIT:
value = tps25990_data2reg_direct(client, TPS25990_VIN_OVF, value);
value = clamp_val(value, 0, 0xf);
@@ -376,6 +376,14 @@ static const struct regulator_desc tps25990_reg_desc[] = {
#endif
static struct tps25990_local_direct_value tps25990_local_info[] = {
+ [tps1689] = {
+ .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,
+ },
[tps25990] = {
.m[TPS25990_VIN_OVF] = 10163,
.b[TPS25990_VIN_OVF] = -30081,
@@ -387,6 +395,59 @@ static struct tps25990_local_direct_value tps25990_local_info[] = {
};
static struct pmbus_driver_info tps25990_base_info[] = {
+ [tps1689] = {
+ .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
+ },
[tps25990] = {
.pages = 1,
.format[PSC_VOLTAGE_IN] = direct,
@@ -429,7 +490,6 @@ static struct pmbus_driver_info tps25990_base_info[] = {
.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),
@@ -438,12 +498,14 @@ static struct pmbus_driver_info tps25990_base_info[] = {
};
static const struct i2c_device_id tps25990_i2c_id[] = {
+ { "tps1689", tps1689 },
{ "tps25990", tps25990 },
{}
};
MODULE_DEVICE_TABLE(i2c, tps25990_i2c_id);
static const struct of_device_id tps25990_of_match[] = {
+ { .compatible = "ti,tps1689", .data = (void *)tps1689 },
{ .compatible = "ti,tps25990", .data = (void *)tps25990 },
{}
};
--
2.43.0