On 7/9/25 02:34, wenswang@xxxxxxxx wrote:
From: Wensheng Wang <wenswang@xxxxxxxx>
Add support for MPS VR mp2869 series and mp29502 controller. The
driver exposes telemetry and limit value readings and writtings.
Signed-off-by: Wensheng Wang <wenswang@xxxxxxxx>
---
V2 -> V3:
merge patches for MP29502 and MP2869
V1 -> V2:
add Rob's Acked-by
Documentation/hwmon/index.rst | 2 +
Documentation/hwmon/mp2869.rst | 175 ++++++++
Documentation/hwmon/mp29502.rst | 93 +++++
MAINTAINERS | 9 +
drivers/hwmon/pmbus/Kconfig | 18 +
drivers/hwmon/pmbus/Makefile | 2 +
drivers/hwmon/pmbus/mp2869.c | 711 ++++++++++++++++++++++++++++++++
drivers/hwmon/pmbus/mp29502.c | 670 ++++++++++++++++++++++++++++++
8 files changed, 1680 insertions(+)
create mode 100644 Documentation/hwmon/mp2869.rst
create mode 100644 Documentation/hwmon/mp29502.rst
create mode 100644 drivers/hwmon/pmbus/mp2869.c
create mode 100644 drivers/hwmon/pmbus/mp29502.c
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index b45bfb4ebf30..ebc5c92e50b0 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -172,8 +172,10 @@ Hardware Monitoring Kernel Drivers
menf21bmc
mlxreg-fan
mp2856
+ mp2869
mp2888
mp2891
+ mp29502
mp2975
mp2993
mp5023
diff --git a/Documentation/hwmon/mp2869.rst b/Documentation/hwmon/mp2869.rst
new file mode 100644
index 000000000000..2d9d65fc86b6
--- /dev/null
+++ b/Documentation/hwmon/mp2869.rst
@@ -0,0 +1,175 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver mp2869
+====================
+
+Supported chips:
+
+ * MPS mp2869
+
+ Prefix: 'mp2869'
+
+ * MPS mp29608
+
+ Prefix: 'mp29608'
+
+ * MPS mp29612
+
+ Prefix: 'mp29612'
+
+ * MPS mp29816
+
+ Prefix: 'mp29816'
+
+Author:
+
+ Wensheng Wang <wenswang@xxxxxxxx>
+
+Description
+-----------
+
+This driver implements support for Monolithic Power Systems, Inc. (MPS)
+MP2869 Dual Loop Digital Multi-phase Controller.
+
+Device compliant with:
+
+- PMBus rev 1.3 interface.
+
+The driver exports the following attributes via the 'sysfs' files
+for input voltage:
+
+**in1_input**
+
+**in1_label**
+
+**in1_crit**
+
+**in1_crit_alarm**
+
+**in1_lcrit**
+
+**in1_lcrit_alarm**
+
+**in1_min**
+
+**in1_min_alarm**
+
+The driver provides the following attributes for output voltage:
+
+**in2_input**
+
+**in2_label**
+
+**in2_crit**
+
+**in2_crit_alarm**
+
+**in2_lcrit**
+
+**in2_lcrit_alarm**
+
+**in3_input**
+
+**in3_label**
+
+**in3_crit**
+
+**in3_crit_alarm**
+
+**in3_lcrit**
+
+**in3_lcrit_alarm**
+
+The driver provides the following attributes for input current:
+
+**curr1_input**
+
+**curr1_label**
+
+**curr2_input**
+
+**curr2_label**
+
+The driver provides the following attributes for output current:
+
+**curr3_input**
+
+**curr3_label**
+
+**curr3_crit**
+
+**curr3_crit_alarm**
+
+**curr3_max**
+
+**curr3_max_alarm**
+
+**curr4_input**
+
+**curr4_label**
+
+**curr4_crit**
+
+**curr4_crit_alarm**
+
+**curr4_max**
+
+**curr4_max_alarm**
+
+The driver provides the following attributes for input power:
+
+**power1_input**
+
+**power1_label**
+
+**power2_input**
+
+**power2_label**
+
+The driver provides the following attributes for output power:
+
+**power3_input**
+
+**power3_label**
+
+**power3_input**
+
+**power3_label**
+
+**power3_max**
+
+**power3_max_alarm**
+
+**power4_input**
+
+**power4_label**
+
+**power4_input**
+
+**power4_label**
+
+**power4_max**
+
+**power4_max_alarm**
+
+The driver provides the following attributes for temperature:
+
+**temp1_input**
+
+**temp1_crit**
+
+**temp1_crit_alarm**
+
+**temp1_max**
+
+**temp1_max_alarm**
+
+**temp2_input**
+
+**temp2_crit**
+
+**temp2_crit_alarm**
+
+**temp2_max**
+
+**temp2_max_alarm**
diff --git a/Documentation/hwmon/mp29502.rst b/Documentation/hwmon/mp29502.rst
new file mode 100644
index 000000000000..7743056f0aa6
--- /dev/null
+++ b/Documentation/hwmon/mp29502.rst
@@ -0,0 +1,93 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver mp29502
+====================
+
+Supported chips:
+
+ * MPS mp29502
+
+ Prefix: 'mp29502'
+
+Author:
+
+ Wensheng Wang <wenswang@xxxxxxxx>
+
+Description
+-----------
+
+This driver implements support for Monolithic Power Systems, Inc. (MPS)
+MP29502 Digital Multi-phase Controller.
+
+Device compliant with:
+
+- PMBus rev 1.3 interface.
+
+The driver exports the following attributes via the 'sysfs' files
+for input voltage:
+
+**in1_input**
+
+**in1_label**
+
+**in1_crit**
+
+**in1_crit_alarm**
+
+The driver provides the following attributes for output voltage:
+
+**in2_input**
+
+**in2_label**
+
+**in2_crit**
+
+**in2_crit_alarm**
+
+**in2_lcrit**
+
+**in2_lcrit_alarm**
+
+The driver provides the following attributes for input current:
+
+**curr1_input**
+
+**curr1_label**
+
+The driver provides the following attributes for output current:
+
+**curr2_input**
+
+**curr2_label**
+
+**curr2_crit**
+
+**curr2_crit_alarm**
+
+**curr2_max**
+
+**curr2_max_alarm**
+
+The driver provides the following attributes for input power:
+
+**power1_input**
+
+**power1_label**
+
+The driver provides the following attributes for output power:
+
+**power2_input**
+
+**power2_label**
+
+The driver provides the following attributes for temperature:
+
+**temp1_input**
+
+**temp1_crit**
+
+**temp1_crit_alarm**
+
+**temp1_max**
+
+**temp1_max_alarm**
diff --git a/MAINTAINERS b/MAINTAINERS
index 240793fbe64b..b4377f0eb3a1 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -16839,6 +16839,15 @@ F: scripts/module*
F: tools/testing/selftests/kmod/
F: tools/testing/selftests/module/
+MONOLITHIC POWER SYSTEM MULTI-PHASE CONTROLLER DRIVER
+M: Wensheng Wang <wenswang@xxxxxxxx>
+L: linux-hwmon@xxxxxxxxxxxxxxx
+S: Maintained
+F: Documentation/hwmon/mp2869.rst
+F: Documentation/hwmon/mp29502.rst
+F: drivers/hwmon/pmbus/mp2869.c
+F: drivers/hwmon/pmbus/mp29502.c
+
MONOLITHIC POWER SYSTEM PMIC DRIVER
M: Saravanan Sekar <sravanhome@xxxxxxxxx>
S: Maintained
diff --git a/drivers/hwmon/pmbus/Kconfig b/drivers/hwmon/pmbus/Kconfig
index 441f984a859d..d0bdd1b5feb6 100644
--- a/drivers/hwmon/pmbus/Kconfig
+++ b/drivers/hwmon/pmbus/Kconfig
@@ -364,6 +364,15 @@ config SENSORS_MP2856
This driver can also be built as a module. If so, the module will
be called mp2856.
+config SENSORS_MP2869
+ tristate "MPS MP2869"
+ help
+ If you say yes here you get hardware monitoring support for MPS
+ MP2869 Dual Loop Digital Multi-Phase Controller.
+
+ This driver can also be built as a module. If so, the module will
+ be called mp2869.
+
config SENSORS_MP2888
tristate "MPS MP2888"
help
@@ -382,6 +391,15 @@ config SENSORS_MP2891
This driver can also be built as a module. If so, the module will
be called mp2891.
+config SENSORS_MP29502
+ tristate "MPS MP29502"
+ help
+ If you say yes here you get hardware monitoring support for MPS
+ MP29502 Dual Loop Digital Multi-Phase Controller.
+
+ This driver can also be built as a module. If so, the module will
+ be called mp29502.
+
config SENSORS_MP2975
tristate "MPS MP2975"
help
diff --git a/drivers/hwmon/pmbus/Makefile b/drivers/hwmon/pmbus/Makefile
index 29cd8a3317d2..4c5ff3f32c5e 100644
--- a/drivers/hwmon/pmbus/Makefile
+++ b/drivers/hwmon/pmbus/Makefile
@@ -37,8 +37,10 @@ obj-$(CONFIG_SENSORS_MAX31785) += max31785.o
obj-$(CONFIG_SENSORS_MAX34440) += max34440.o
obj-$(CONFIG_SENSORS_MAX8688) += max8688.o
obj-$(CONFIG_SENSORS_MP2856) += mp2856.o
+obj-$(CONFIG_SENSORS_MP2869) += mp2869.o
obj-$(CONFIG_SENSORS_MP2888) += mp2888.o
obj-$(CONFIG_SENSORS_MP2891) += mp2891.o
+obj-$(CONFIG_SENSORS_MP29502) += mp29502.o
obj-$(CONFIG_SENSORS_MP2975) += mp2975.o
obj-$(CONFIG_SENSORS_MP2993) += mp2993.o
obj-$(CONFIG_SENSORS_MP5023) += mp5023.o
diff --git a/drivers/hwmon/pmbus/mp2869.c b/drivers/hwmon/pmbus/mp2869.c
new file mode 100644
index 000000000000..af233ffd5230
--- /dev/null
+++ b/drivers/hwmon/pmbus/mp2869.c
@@ -0,0 +1,711 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Hardware monitoring driver for MPS Multi-phase Digital VR Controllers(MP2869)
+ */
+
+#include <linux/bitfield.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include "pmbus.h"
+
+#define MFR_READ_PIN_EST 0x94
+#define MFR_READ_IIN_EST 0x95
+#define MFR_VOUT_SCALE_LOOP 0x29
This is a standard register.
+#define MFR_SVI3_IOUT_PRT 0x67
+#define STATUS_MFR_SPECIFIC 0x80
This is a standard register.
Guenter
