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Message-ID: <20250510091937.2298256-2-paweldembicki@gmail.com> Date: Sat, 10 May 2025 11:18:44 +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>, Naresh Solanki <naresh.solanki@...ements.com>, Michal Simek <michal.simek@....com>, Fabio Estevam <festevam@...il.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 v3 1/5] 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. --- v3: - added maximum and default value to 'mps,vout-fb-divider-ratio-permille' - add enum to compatible check - move 'required' to proper place 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 | 74 +++++++++++++++++++ .../devicetree/bindings/trivial-devices.yaml | 2 - 2 files changed, 74 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..90970a0433e9 --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/pmbus/mps,mpq8785.yaml @@ -0,0 +1,74 @@ +# 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 + maximum: 4095 + default: 706 + +required: + - compatible + - reg + +allOf: + - if: + properties: + compatible: + enum: + - mps,mpm3695 + - mps,mpm82504 + then: + properties: + mps,vout-fb-divider-ratio-permille: + maximum: 1023 + + - if: + properties: + compatible: + const: mps,mpq8785 + then: + properties: + mps,vout-fb-divider-ratio-permille: + maximum: 2047 + +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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