Add devicetree bindings to support declaring optional voltage dividers to the rail outputs of supported digital multiphase regulators. Some applications require Vout to exceed the voltage range that the Vsense pin can detect. This binding definition allows users to define the characteristics of a voltage divider placed between Vout and the Vsense pin for any rail powered by the device. Signed-off-by: Grant Peltier <grantpeltier93@xxxxxxxxx> --- .../hwmon/pmbus/renesas,isl68137.yaml | 131 ++++++++++++++++++ 1 file changed, 131 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/pmbus/renesas,isl68137.yaml diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/renesas,isl68137.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/renesas,isl68137.yaml new file mode 100644 index 000000000000..af10c55d547f --- /dev/null +++ b/Documentation/devicetree/bindings/hwmon/pmbus/renesas,isl68137.yaml @@ -0,0 +1,131 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- + +$id: http://devicetree.org/schemas/hwmon/pmbus/renesas,isl68137.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas Digital Multiphase Voltage Regulators with PMBus + +maintainers: + - Grant Peltier <grant.peltier.jg@xxxxxxxxxxx> + +description: | + Renesas digital multiphase voltage regulators with PMBus. + https://www.renesas.com/en/products/power-management/multiphase-power/multiphase-dcdc-switching-controllers + +properties: + compatible: + enum: + - renesas,isl68220 + - renesas,isl68221 + - renesas,isl68222 + - renesas,isl68223 + - renesas,isl68224 + - renesas,isl68225 + - renesas,isl68226 + - renesas,isl68227 + - renesas,isl68229 + - renesas,isl68233 + - renesas,isl68239 + - renesas,isl69222 + - renesas,isl69223 + - renesas,isl69224 + - renesas,isl69225 + - renesas,isl69227 + - renesas,isl69228 + - renesas,isl69234 + - renesas,isl69236 + - renesas,isl69239 + - renesas,isl69242 + - renesas,isl69243 + - renesas,isl69247 + - renesas,isl69248 + - renesas,isl69254 + - renesas,isl69255 + - renesas,isl69256 + - renesas,isl69259 + - renesas,isl69260 + - renesas,isl69268 + - renesas,isl69269 + - renesas,isl69298 + - renesas,raa228000 + - renesas,raa228004 + - renesas,raa228006 + - renesas,raa228228 + - renesas,raa229001 + - renesas,raa229004 + + reg: + maxItems: 1 + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +patternProperties: + "^channel@([0-3])$": + type: object + description: + Container for properties specific to a particular channel (rail). + + properties: + reg: + description: The channel (rail) index. + items: + minimum: 0 + maximum: 3 + + renesas,vout-voltage-divider: + description: + Resistances of a voltage divider placed between Vout and the voltage + sense pin for the given channel (rail). It has two numbers + representing the resistances of the voltage divider provided as + <R1 R2> which yields an adjusted Vout as + Vout_adj = Vout * (R1 + R2) / R2 given the original Vout as reported + by the Vsense pin. + $ref: /schemas/types.yaml#/definitions/uint32-array + minItems: 2 + maxItems: 2 + + required: + - reg + + additionalProperties: false + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + isl68239@60 { + compatible = "renesas,isl68239"; + reg = <0x60>; + }; + }; + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + isl68239@60 { + compatible = "renesas,isl68239"; + reg = <0x60>; + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + renesas,vout-voltage-divider = <1000 1000>; // Reported Vout/Pout would be scaled by 2 + }; + }; + }; -- 2.39.5
