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 | 149 ++++++++++++++++++ 1 file changed, 149 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..79000b745cfd --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/mpq7920.yaml @@ -0,0 +1,149 @@ +# 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: "mpq@[0-9a-f]{1,2}" + compatible: + enum: + - mps,mpq7920 + + reg: + maxItems: 1 + + regulators: + type: string + 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 + + properties: + mps,time-slot: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + power on/off sequence time slot/interval must be one of following values + With: + * 0: 0.5ms + * 1: 2ms + * 2: 8ms + * 3: 16ms + Defaults to 0.5ms if not specified. + + properties: + mps,fixed-on-time: + - $ref: "/schemas/types.yaml#/definitions/boolean" + description: | + select power on sequence with fixed time interval mentioned in + time-slot reg for all the regulators. + + properties: + mps,fixed-off-time: + - $ref: "/schemas/types.yaml#/definitions/boolean" + description: | + select power off sequence with fixed time interval mentioned in + time-slot reg for all the regulators. + + properties: + mps,inc-off-time: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + An array of 8, linearly increase power off sequence time + slot/interval for each regulator must be one of following values + * 0 to 15 + properties: + mps,inc-on-time: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + An array of 8, linearly increase power on sequence time + slot/interval for each regulator must be one of following values + * 0 to 15 + + properties: + mps,switch-freq: + - $ref: "/schemas/types.yaml#/definitions/uint8" + description: | + switching frequency must be one of following values + * 0 : 1.1MHz + * 1 : 1.65MHz + * 2 : 2.2MHz + * 3 : 2.75MHz + Defaults to 2.2 MHz if not specified. + + properties: + mps,buck-softstart: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + An array of 4 contains soft start time of each buck, must be one of + following values + * 0 : 150us + * 1 : 300us + * 2 : 610us + * 3 : 920us + Defaults to 300us if not specified. + + properties: + mps,buck-ovp: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + An array of 4 contains over voltage protection of each buck, must be + one of following values + * 0 : disabled + * 1 : enabled + Defaults is enabled if not specified. + + properties: + mps,buck-phase-delay: + - $ref: "/schemas/types.yaml#/definitions/uint8-array" + description: | + An array of 4 contains each buck phase delay must be one of following + values + * 0: 0deg + * 1: 90deg + * 2: 180deg + * 3: 270deg + Defaults to 0deg for buck1 & buck2, 90deg for buck3 & buck4 if not + specified. + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + mpq7920@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
