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authorCharles Hsu <ythsu0511@gmail.com>2024-01-31 15:48:22 +0800
committerGuenter Roeck <linux@roeck-us.net>2024-02-25 12:37:36 -0800
commitf20b4a931130cb574c40563cfda0fc2cb944b4df (patch)
tree9024bd3197fdd4f0e9b3570c1abadd1ffb188ff2 /Documentation/hwmon
parent7e6707f7da317eb98c12de6a477d5cfb5057705f (diff)
hwmon: Add driver for MPS MPQ8785 Synchronous Step-Down Converter
Add support for mpq8785 device from Monolithic Power Systems, Inc. (MPS) vendor. This is synchronous step-down controller. Signed-off-by: Charles Hsu <ythsu0511@gmail.com> Link: https://lore.kernel.org/r/20240131074822.2962078-2-ythsu0511@gmail.com [groeck: probe_new --> probe; add MODULE_IMPORT_NS(PMBUS)] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Diffstat (limited to 'Documentation/hwmon')
-rw-r--r--Documentation/hwmon/index.rst1
-rw-r--r--Documentation/hwmon/mpq8785.rst94
2 files changed, 95 insertions, 0 deletions
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 8f73badecba1..9ac087dd3e78 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -164,6 +164,7 @@ Hardware Monitoring Kernel Drivers
mp2975
mp5023
mp5990
+ mpq8785
nct6683
nct6775
nct7802
diff --git a/Documentation/hwmon/mpq8785.rst b/Documentation/hwmon/mpq8785.rst
new file mode 100644
index 000000000000..bf8176b87086
--- /dev/null
+++ b/Documentation/hwmon/mpq8785.rst
@@ -0,0 +1,94 @@
+.. SPDX-License-Identifier: GPL-2.0-only
+
+Kernel driver mpq8785
+=======================
+
+Supported chips:
+
+ * MPS MPQ8785
+
+ Prefix: 'mpq8785'
+
+Author: Charles Hsu <ythsu0511@gmail.com>
+
+Description
+-----------
+
+The MPQ8785 is a fully integrated, PMBus-compatible, high-frequency, synchronous
+buck converter. The MPQ8785 offers a very compact solution that achieves up to
+40A output current per phase, with excellent load and line regulation over a
+wide input supply range. The MPQ8785 operates at high efficiency over a wide
+output current load range.
+
+The PMBus interface provides converter configurations and key parameters
+monitoring.
+
+The MPQ8785 adopts MPS's proprietary multi-phase digital constant-on-time (MCOT)
+control, which provides fast transient response and eases loop stabilization.
+The MCOT scheme also allows multiple MPQ8785 devices to be connected in parallel
+with excellent current sharing and phase interleaving for high-current
+applications.
+
+Fully integrated protection features include over-current protection (OCP),
+over-voltage protection (OVP), under-voltage protection (UVP), and
+over-temperature protection (OTP).
+
+The MPQ8785 requires a minimal number of readily available, standard external
+components, and is available in a TLGA (5mmx6mm) package.
+
+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_max**
+
+**in1_max_alarm**
+
+**in1_min**
+
+**in1_min_alarm**
+
+**in1_crit**
+
+**in1_crit_alarm**
+
+The driver provides the following attributes for output voltage:
+
+**in2_input**
+
+**in2_label**
+
+**in2_alarm**
+
+The driver provides the following attributes for output current:
+
+**curr1_input**
+
+**curr1_label**
+
+**curr1_max**
+
+**curr1_max_alarm**
+
+**curr1_crit**
+
+**curr1_crit_alarm**
+
+The driver provides the following attributes for temperature:
+
+**temp1_input**
+
+**temp1_max**
+
+**temp1_max_alarm**
+
+**temp1_crit**
+
+**temp1_crit_alarm**