diff options
Diffstat (limited to 'Documentation')
5 files changed, 66 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/mfd/palmas.txt b/Documentation/devicetree/bindings/mfd/palmas.txt index e5f0f8303461..eda898978d33 100644 --- a/Documentation/devicetree/bindings/mfd/palmas.txt +++ b/Documentation/devicetree/bindings/mfd/palmas.txt @@ -6,6 +6,7 @@ twl6037 (palmas) tps65913 (palmas) tps65914 (palmas) tps659038 +tps65917 Required properties: - compatible : Should be from the list @@ -16,6 +17,7 @@ Required properties: ti,tps65914 ti,tps80036 ti,tps659038 + ti,tps65917 and also the generic series names ti,palmas - interrupt-controller : palmas has its own internal IRQs diff --git a/Documentation/devicetree/bindings/regulator/act8865-regulator.txt b/Documentation/devicetree/bindings/regulator/act8865-regulator.txt index bef1fbb647ca..865614b34d6f 100644 --- a/Documentation/devicetree/bindings/regulator/act8865-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/act8865-regulator.txt @@ -1,13 +1,16 @@ -ACT8865 regulator +ACT88xx regulators ------------------- Required properties: -- compatible: "active-semi,act8865" +- compatible: "active-semi,act8846" or "active-semi,act8865" - reg: I2C slave address Any standard regulator properties can be used to configure the single regulator. The valid names for regulators are: + - for act8846: + REG1, REG2, REG3, REG4, REG5, REG6, REG7, REG8, REG9, REG10, REG11, REG12 + - for act8865: DCDC_REG1, DCDC_REG2, DCDC_REG3, LDO_REG1, LDO_REG2, LDO_REG3, LDO_REG4. Example: diff --git a/Documentation/devicetree/bindings/regulator/palmas-pmic.txt b/Documentation/devicetree/bindings/regulator/palmas-pmic.txt index 42e6b6bc48ff..725393c8a7f2 100644 --- a/Documentation/devicetree/bindings/regulator/palmas-pmic.txt +++ b/Documentation/devicetree/bindings/regulator/palmas-pmic.txt @@ -7,6 +7,7 @@ Required properties: ti,twl6037-pmic ti,tps65913-pmic ti,tps65914-pmic + ti,tps65917-pmic and also the generic series names ti,palmas-pmic - interrupt-parent : The parent interrupt controller which is palmas. diff --git a/Documentation/devicetree/bindings/regulator/tps65218.txt b/Documentation/devicetree/bindings/regulator/tps65218.txt new file mode 100644 index 000000000000..fccc1d24af58 --- /dev/null +++ b/Documentation/devicetree/bindings/regulator/tps65218.txt @@ -0,0 +1,23 @@ +TPS65218 family of regulators + +Required properties: +For tps65218 regulators/LDOs +- compatible: + - "ti,tps65218-dcdc1" for DCDC1 + - "ti,tps65218-dcdc2" for DCDC2 + - "ti,tps65218-dcdc3" for DCDC3 + - "ti,tps65218-dcdc4" for DCDC4 + - "ti,tps65218-dcdc5" for DCDC5 + - "ti,tps65218-dcdc6" for DCDC6 + - "ti,tps65218-ldo1" for LDO1 + +Optional properties: +- Any optional property defined in bindings/regulator/regulator.txt + +Example: + + xyz: regulator@0 { + compatible = "ti,tps65218-dcdc1"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <3000000>; + }; diff --git a/Documentation/power/regulator/consumer.txt b/Documentation/power/regulator/consumer.txt index 55c4175d8099..81c0e2b49cd8 100644 --- a/Documentation/power/regulator/consumer.txt +++ b/Documentation/power/regulator/consumer.txt @@ -180,3 +180,38 @@ int regulator_unregister_notifier(struct regulator *regulator, Regulators use the kernel notifier framework to send event to their interested consumers. + +7. Regulator Direct Register Access +=================================== +Some kinds of power management hardware or firmware are designed such that +they need to do low-level hardware access to regulators, with no involvement +from the kernel. Examples of such devices are: + +- clocksource with a voltage-controlled oscillator and control logic to change + the supply voltage over I2C to achieve a desired output clock rate +- thermal management firmware that can issue an arbitrary I2C transaction to + perform system poweroff during overtemperature conditions + +To set up such a device/firmware, various parameters like I2C address of the +regulator, addresses of various regulator registers etc. need to be configured +to it. The regulator framework provides the following helpers for querying +these details. + +Bus-specific details, like I2C addresses or transfer rates are handled by the +regmap framework. To get the regulator's regmap (if supported), use :- + +struct regmap *regulator_get_regmap(struct regulator *regulator); + +To obtain the hardware register offset and bitmask for the regulator's voltage +selector register, use :- + +int regulator_get_hardware_vsel_register(struct regulator *regulator, + unsigned *vsel_reg, + unsigned *vsel_mask); + +To convert a regulator framework voltage selector code (used by +regulator_list_voltage) to a hardware-specific voltage selector that can be +directly written to the voltage selector register, use :- + +int regulator_list_hardware_vsel(struct regulator *regulator, + unsigned selector); |