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regulator: Add QCOM SPMI regulator driver
Add an SPMI regulator driver for Qualcomm's PM8841, PM8941, and PM8916 PMICs. This driver is based largely on code from codeaurora.org[1]. [1] https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/regulator/qpnp-regulator.c?h=msm-3.10 Cc: David Collins <[email protected]> Cc: <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Signed-off-by: Mark Brown <[email protected]>
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‎Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt

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Qualcomm SPMI Regulators
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- compatible:
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Usage: required
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Value type: <string>
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Definition: must be one of:
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"qcom,pm8841-regulators"
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"qcom,pm8916-regulators"
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"qcom,pm8941-regulators"
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- interrupts:
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Usage: optional
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Value type: <prop-encoded-array>
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Definition: List of OCP interrupts.
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- interrupt-names:
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Usage: required if 'interrupts' property present
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Value type: <string-array>
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Definition: List of strings defining the names of the
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interrupts in the 'interrupts' property 1-to-1.
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Supported values are "ocp-<regulator_name>", where
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<regulator_name> corresponds to a voltage switch
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type regulator.
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- vdd_s1-supply:
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- vdd_s2-supply:
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- vdd_s3-supply:
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- vdd_s4-supply:
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- vdd_s5-supply:
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- vdd_s6-supply:
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- vdd_s7-supply:
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- vdd_s8-supply:
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Usage: optional (pm8841 only)
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Value type: <phandle>
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Definition: Reference to regulator supplying the input pin, as
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described in the data sheet.
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- vdd_s1-supply:
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- vdd_s2-supply:
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- vdd_s3-supply:
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- vdd_s4-supply:
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- vdd_l1_l3-supply:
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- vdd_l2-supply:
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- vdd_l4_l5_l6-supply:
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- vdd_l7-supply:
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- vdd_l8_l11_l14_l15_l16-supply:
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- vdd_l9_l10_l12_l13_l17_l18-supply:
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Usage: optional (pm8916 only)
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Value type: <phandle>
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Definition: Reference to regulator supplying the input pin, as
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described in the data sheet.
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- vdd_s1-supply:
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- vdd_s2-supply:
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- vdd_s3-supply:
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- vdd_l1_l3-supply:
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- vdd_l2_lvs_1_2_3-supply:
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- vdd_l4_l11-supply:
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- vdd_l5_l7-supply:
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- vdd_l6_l12_l14_l15-supply:
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- vdd_l8_l16_l18_19-supply:
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- vdd_l9_l10_l17_l22-supply:
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- vdd_l13_l20_l23_l24-supply:
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- vdd_l21-supply:
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- vin_5vs-supply:
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Usage: optional (pm8941 only)
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Value type: <phandle>
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Definition: Reference to regulator supplying the input pin, as
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described in the data sheet.
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The regulator node houses sub-nodes for each regulator within the device. Each
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sub-node is identified using the node's name, with valid values listed for each
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of the PMICs below.
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pm8841:
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s1, s2, s3, s4, s5, s6, s7, s8
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pm8916:
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s1, s2, s3, s4, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13,
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l14, l15, l16, l17, l18
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pm8941:
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s1, s2, s3, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, l14,
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l15, l16, l17, l18, l19, l20, l21, l22, l23, l24, lvs1, lvs2, lvs3,
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mvs1, mvs2
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The content of each sub-node is defined by the standard binding for regulators -
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see regulator.txt - with additional custom properties described below:
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- regulator-initial-mode:
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Usage: optional
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Value type: <u32>
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Descrption: 1 = Set initial mode to high power mode (HPM), also referred
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to as NPM. HPM consumes more ground current than LPM, but
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it can source significantly higher load current. HPM is not
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available on boost type regulators. For voltage switch type
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regulators, HPM implies that over current protection and
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soft start are active all the time. 0 = Set initial mode to
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low power mode (LPM).
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Example:
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regulators {
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compatible = "qcom,pm8941-regulators";
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vdd_l1_l3-supply = <&s1>;
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s1: s1 {
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regulator-min-microvolt = <1300000>;
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regulator-max-microvolt = <1400000>;
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};
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...
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l1: l1 {
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regulator-min-microvolt = <1225000>;
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regulator-max-microvolt = <1300000>;
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};
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....
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};

‎drivers/regulator/Kconfig

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Qualcomm RPM as a module. The module will be named
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"qcom_rpm-regulator".
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config REGULATOR_QCOM_SPMI
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tristate "Qualcomm SPMI regulator driver"
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depends on SPMI || COMPILE_TEST
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help
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If you say yes to this option, support will be included for the
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regulators found in Qualcomm SPMI PMICs.
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Say M here if you want to include support for the regulators on the
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Qualcomm SPMI PMICs as a module. The module will be named
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"qcom_spmi-regulator".
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config REGULATOR_RC5T583
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tristate "RICOH RC5T583 Power regulators"
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depends on MFD_RC5T583

‎drivers/regulator/Makefile

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obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
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obj-$(CONFIG_REGULATOR_MT6397) += mt6397-regulator.o
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obj-$(CONFIG_REGULATOR_QCOM_RPM) += qcom_rpm-regulator.o
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obj-$(CONFIG_REGULATOR_QCOM_SPMI) += qcom_spmi-regulator.o
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obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
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obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
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obj-$(CONFIG_REGULATOR_PWM) += pwm-regulator.o

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