Add device tree binding information for mpq7920 regulator driver. Example bindings for mpq7920 are added. Signed-off-by: Saravanan Sekar <sravanhome@xxxxxxxxx> --- .../bindings/regulator/mpq7920.yaml | 143 ++++++++++++++++++ 1 file changed, 143 insertions(+) create mode 100644 Documentation/devicetree/bindings/regulator/mpq7920.yaml diff --git a/Documentation/devicetree/bindings/regulator/mpq7920.yaml b/Documentation/devicetree/bindings/regulator/mpq7920.yaml new file mode 100644 index 000000000000..54e9177dfd1b --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/mpq7920.yaml @@ -0,0 +1,143 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/regulator/mpq7920.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Monolithic Power System MPQ7920 PMIC + +maintainers: + - Saravanan Sekar <sravanhome@xxxxxxxxx> + +properties: + $nodename: + pattern: "pmic@[0-9a-f]{1,2}" + compatible: + enum: + - mps,mpq7920 + + reg: + maxItems: 1 + + mps,time-slot: + description: + each regulator output shall be delayed during power on/off sequence which + based on configurable time slot value, must be one of following corresponding + value 0.5ms, 2ms, 8ms, 16ms + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8" + - enum: [ 0, 1, 2, 3 ] + - default: 0 + + mps,fixed-on-time: + description: + select power on sequence with fixed time output delay mentioned in + time-slot reg for all the regulators. + type: boolean + + mps,fixed-off-time: + description: + select power off sequence with fixed time output delay mentioned in + time-slot reg for all the regulators. + type: boolean + + mps,inc-off-time: + description: | + mutually exclusive to mps,fixed-off-time an array of 8, linearly increase + output delay during power off sequence based on factor of time slot/interval + for each regulator. + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + - minimum: 0 + - maximum: 15 + - default: [ 0, 6, 0, 6, 7, 7, 7, 9 ] + + mps,inc-on-time: + description: | + mutually exclusive to mps,fixed-on-time an array of 8, linearly increase + output delay during power on sequence based on factor of time slot/interval + for each regulator. + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + - minimum: 0 + - maximum: 15 + - default: [ 0, 6, 0, 6, 7, 7, 7, 9 ] + + mps,switch-freq: + description: | + switching frequency must be one of following corresponding value + 1.1MHz, 1.65MHz, 2.2MHz, 2.75MHz + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8" + - enum: [ 0, 1, 2, 3 ] + - default: 2 + + mps,buck-softstart: + description: | + An array of 4 contains soft start time of each buck, must be one of + following corresponding values 150us, 300us, 610us, 920us + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + - enum: [ 0, 1, 2, 3 ] + - default: [ 1, 1, 1, 1 ] + + mps,buck-ovp: + description: | + An array of 4 contains over voltage protection of each buck, must be + one of above values + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + - enum: [ 0, 1 ] + - default: [ 1, 1, 1, 1 ] + + mps,buck-phase-delay: + description: | + An array of 4 contains phase delay of each buck must be one of above values + corresponding to 0deg, 90deg, 180deg, 270deg + allOf: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + - enum: [ 0, 1, 2, 3 ] + - default: [ 0, 0, 1, 1 ] + + regulators: + type: object + description: + list of regulators provided by this controller, must be named + after their hardware counterparts BUCK[1-4], one LDORTC, and LDO[2-5] + The valid names for regulators are + buck1, buck2, buck3, buck4, ldortc, ldo2, ldo3, ldo4, ldo5 + + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + pmic@69 { + compatible = "mps,mpq7920"; + reg = <0x69>; + + mps,switch-freq = <1>; + mps,buck-softstart = /bits/ 8 <1 2 1 3>; + mps,buck-ovp = /bits/ 8 <1 0 1 1>; + + regulators { + buck1 { + regulator-name = "buck1"; + regulator-min-microvolt = <400000>; + regulator-max-microvolt = <3587500>; + regulator-min-microamp = <460000>; + regulator-max-microamp = <7600000>; + regulator-boot-on; + }; + + ldo2 { + regulator-name = "ldo2"; + regulator-min-microvolt = <650000>; + regulator-max-microvolt = <3587500>; + }; + }; + }; + }; +... -- 2.17.1
