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Message-ID: <20250509065237.2392692-6-paweldembicki@gmail.com>
Date: Fri, 9 May 2025 08:51:09 +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>,
Noah Wang <noahwang.wang@...look.com>,
Michal Simek <michal.simek@....com>,
Fabio Estevam <festevam@...il.com>,
Naresh Solanki <naresh.solanki@...ements.com>,
Grant Peltier <grantpeltier93@...il.com>,
Laurent Pinchart <laurent.pinchart@...asonboard.com>,
Greg KH <gregkh@...uxfoundation.org>,
Peter Zijlstra <peterz@...radead.org>,
Shen Lichuan <shenlichuan@...o.com>,
Charles Hsu <ythsu0511@...il.com>,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-doc@...r.kernel.org
Subject: [PATCH v2 5/5] dt-bindings: hwmon: Add bindings for mpq8785 driver
Add device tree bindings for Monolithic Power Systems MPQ8785, MPM82504
and MPM3695 PMBus-compliant voltage regulators.
These bindings also documents the optional
"mps,vout-fb-divider-ratio-permille" property.
---
v2:
- remove mps,mpq8785 from trivial-devices.yaml
- fix alphabetical order
- rename voltage-scale-loop to mps,vout-fb-divider-ratio-permille
- add mps,vout-fb-divider-ratio-permille min and max values
- rewrite mps,vout-fb-divider-ratio-permille description
Signed-off-by: Pawel Dembicki <paweldembicki@...il.com>
---
.../bindings/hwmon/pmbus/mps,mpq8785.yaml | 88 +++++++++++++++++++
.../devicetree/bindings/trivial-devices.yaml | 2 -
2 files changed, 88 insertions(+), 2 deletions(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml
new file mode 100644
index 000000000000..3c61f5484326
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml
@@ -0,0 +1,88 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/pmbus/mps,mpq8785.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Monolithic Power Systems Multiphase Voltage Regulators with PMBus
+
+maintainers:
+ - Charles Hsu <ythsu0511@...il.com>
+
+description:
+ Monolithic Power Systems digital multiphase voltage regulators with PMBus.
+
+properties:
+ compatible:
+ enum:
+ - mps,mpm3695
+ - mps,mpm3695-25
+ - mps,mpm82504
+ - mps,mpq8785
+
+ reg:
+ maxItems: 1
+
+ mps,vout-fb-divider-ratio-permille:
+ description:
+ The feedback resistor divider ratio, expressed in permille
+ (Vfb / Vout * 1000). This value is written to the PMBUS_VOUT_SCALE_LOOP
+ register and is required for correct output voltage presentation.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 1
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ const: mps,mpq8785
+ then:
+ properties:
+ mps,vout-fb-divider-ratio-permille:
+ maximum: 2047
+
+ - if:
+ properties:
+ compatible:
+ const: mps,mpm82504
+ then:
+ properties:
+ mps,vout-fb-divider-ratio-permille:
+ maximum: 1023
+
+ - if:
+ properties:
+ compatible:
+ const: mps,mpm3695
+ then:
+ properties:
+ mps,vout-fb-divider-ratio-permille:
+ maximum: 1023
+
+ - if:
+ properties:
+ compatible:
+ const: mps,mpm3695-25
+ then:
+ properties:
+ mps,vout-fb-divider-ratio-permille:
+ maximum: 4095
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@30 {
+ compatible = "mps,mpm82504";
+ reg = <0x30>;
+ mps,vout-fb-divider-ratio-permille = <600>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 8da408107e55..7c1c0cc29655 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -293,8 +293,6 @@ properties:
- mps,mp5990
# Monolithic Power Systems Inc. digital step-down converter mp9941
- mps,mp9941
- # Monolithic Power Systems Inc. synchronous step-down converter mpq8785
- - mps,mpq8785
# Temperature sensor with integrated fan control
- national,lm63
# Serial Interface ACPI-Compatible Microprocessor System Hardware Monitor
--
2.43.0
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