linux-kernel - [PATCH 3/5] hwmon: pmbus: mpq8785: Add support for MPM3695

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Message-ID: <20250428221420.2077697-4-paweldembicki@gmail.com>
Date: Tue, 29 Apr 2025 00:13:33 +0200
From: Pawel Dembicki <paweldembicki@...il.com>
To: linux-hwmon@...r.kernel.org
Cc: Pawel Dembicki <paweldembicki@...il.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>,
	Peter Zijlstra <peterz@...radead.org>,
	Greg KH <gregkh@...uxfoundation.org>,
	Shen Lichuan <shenlichuan@...o.com>,
	Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
	Charles Hsu <ythsu0511@...il.com>,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-doc@...r.kernel.org
Subject: [PATCH 3/5] hwmon: pmbus: mpq8785: Add support for MPM3695

Add support for the Monolithic Power Systems MPM3695 device.
The device is PMBus compliant and shares characteristics with the
MPM82504.

Tested with device tree based matching.

Signed-off-by: Pawel Dembicki <paweldembicki@...il.com>
---
 Documentation/hwmon/mpq8785.rst | 13 +++++++++++--
 drivers/hwmon/pmbus/mpq8785.c   |  5 ++++-
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Documentation/hwmon/mpq8785.rst b/Documentation/hwmon/mpq8785.rst
index be228ee58ce2..20d43b8bba97 100644
--- a/Documentation/hwmon/mpq8785.rst
+++ b/Documentation/hwmon/mpq8785.rst
@@ -7,6 +7,7 @@ Supported chips:
 
   * MPS MPQ8785
   * MPS MPM82504
+  * MPS MPM3695-10
 
     Prefix: 'mpq8785'
 
@@ -29,6 +30,13 @@ The device can also operate in parallel with the MPM3695-100 and additional
 MPM82504 devices to provide a higher output current. The MPM82504 operates
 at high efficiency across a wide load range.
 
+The MPM3695-10 is a scalable, ultra-thin, fully integrated power module with
+a PMBus interface. It offers a complete power solution that achieves up to
+10A of output current with excellent load and line regulation across a wide
+input voltage range. The device’s 2mm height enables it to be placed on the
+backside of a PCB for space optimization. It operates at high efficiency over
+a wide load range, and can be paralleled to deliver higher current.
+
 The PMBus interface provides converter configurations and key parameters
 monitoring.
 
@@ -43,8 +51,9 @@ over-voltage protection (OVP), under-voltage protection (UVP), and
 over-temperature protection (OTP).
 
 All supported modules require a minimal number of readily available, standard
-external components. The MPQ8785 is available in a TLGA (5mmx6mm) package
-and the MPM82504 is available in a BGA (15mmx30mmx5.18mm) package.
+external components. The MPQ8785 is available in a TLGA (5mmx6mm) package,
+the MPM82504 is available in a BGA (15mmx30mmx5.18mm) package and the MPM3695-10
+is available in an LGA-45 (8mmx8mmx2mm) package.
 
 Device compliant with:
 
diff --git a/drivers/hwmon/pmbus/mpq8785.c b/drivers/hwmon/pmbus/mpq8785.c
index 7ee201550554..e6a643856f08 100644
--- a/drivers/hwmon/pmbus/mpq8785.c
+++ b/drivers/hwmon/pmbus/mpq8785.c
@@ -8,7 +8,7 @@
 #include <linux/of_device.h>
 #include "pmbus.h"
 
-enum chips { mpq8785, mpm82504 };
+enum chips { mpq8785, mpm82504, mpm3695_10 };
 
 static int mpq8785_identify(struct i2c_client *client,
 			    struct pmbus_driver_info *info)
@@ -60,6 +60,7 @@ static struct pmbus_driver_info mpq8785_info = {
 static const struct i2c_device_id mpq8785_id[] = {
 	{ "mpq8785", mpq8785 },
 	{ "mpm82504", mpm82504 },
+	{ "mpm3695-10", mpm3695_10 },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, mpq8785_id);
@@ -67,6 +68,7 @@ MODULE_DEVICE_TABLE(i2c, mpq8785_id);
 static const struct of_device_id __maybe_unused mpq8785_of_match[] = {
 	{ .compatible = "mps,mpq8785", .data = (void *)mpq8785 },
 	{ .compatible = "mps,mpm82504", .data = (void *)mpm82504 },
+	{ .compatible = "mps,mpm3695-10", .data = (void *)mpm3695_10 },
 	{}
 };
 MODULE_DEVICE_TABLE(of, mpq8785_of_match);
@@ -92,6 +94,7 @@ static int mpq8785_probe(struct i2c_client *client)
 
 		break;
 	case mpm82504:
+	case mpm3695_10:
 		info->format[PSC_VOLTAGE_OUT] = direct;
 		info->m[PSC_VOLTAGE_OUT] = 8;
 		info->b[PSC_VOLTAGE_OUT] = 0;
-- 
2.43.0