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regulator: Changes for v4.16

Browse source 
This is a quiet release in terms of code volume but a fairly big one in
 terms of framework changes - we've got one long awaited feature in the
 form of runtime configuration of suspend and the start of coupled
 regulator support too:
 
  - Support for modifying the voltage and enable configuration devices
    will have in suspend, contributed by Chunyan Zhang.
  - Support for the Spreadtrum SC2731, contributed by Erick Chen.
  - The start of changes to support coupled regulators from Maciej
    Purski, the rest of the series should arrive for v4.17.
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Merge tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "This is a quiet release in terms of code volume but a fairly big one
  in terms of framework changes - we've got one long awaited feature in
  the form of runtime configuration of suspend and the start of coupled
  regulator support too:

   - Support for modifying the voltage and enable configuration devices
     will have in suspend, contributed by Chunyan Zhang.

   - Support for the Spreadtrum SC2731, contributed by Erick Chen.

   - The start of changes to support coupled regulators from Maciej
     Purski, the rest of the series should arrive for v4.17"

* tag 'regulator-v4.16' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: Fix build error
  regulator: core: Refactor regulator_list_voltage()
  regulator: core: Move of_find_regulator_by_node() to of_regulator.c
  regulator: add PM suspend and resume hooks
  regulator: empty the old suspend functions
  regulator: leave one item to record whether regulator is enabled
  regulator: make regulator voltage be an array to support more states
  regulator: added support for suspend states
  regulator: qcom_spmi: Use regmap helpers for enable/disable/is_enabled callback
  regulator: sc2731: Fix defines for SC2731_WR_UNLOCK and SC2731_PWR_WR_PROT_VALUE
  regulator: fix incorrect indentation of two assignment statements
  regulator: sc2731: Add regulator driver to support Spreadtrum SC2731 PMIC
  regulator: Add Spreadtrum SC2731 regulator documentation
  regulator: Update code examples in documentation
  MAINTAINERS: regulator: Add Documentation/power/regulator/
  regulator: tps65218: Add NULL test for devm_kzalloc call
  regulator: tps65218: Remove unused enum tps65218_regulators
This commit is contained in:
Linus Torvalds 2018-01-29 11:32:44 -08:00
commit dc38787a58
14 changed files with 697 additions and 231 deletions
Download patch file Download diff file Expand all files Collapse all files

12
Documentation/devicetree/bindings/regulator/regulator.txt
View file

@ -42,8 +42,16 @@ Optional properties:
- regulator-state-[mem/disk] node has following common properties:
- regulator-on-in-suspend: regulator should be on in suspend state.
- regulator-off-in-suspend: regulator should be off in suspend state.
- regulator-suspend-microvolt: regulator should be set to this voltage
in suspend.
- regulator-suspend-min-microvolt: minimum voltage may be set in
suspend state.
- regulator-suspend-max-microvolt: maximum voltage may be set in
suspend state.
- regulator-suspend-microvolt: the default voltage which regulator
would be set in suspend. This property is now deprecated, instead
setting voltage for suspend mode via the API which regulator
driver provides is recommended.
- regulator-changeable-in-suspend: whether the default voltage and
the regulator on/off in suspend can be changed in runtime.
- regulator-mode: operating mode in the given suspend state.
The set of possible operating modes depends on the capabilities of
every hardware so the valid modes are documented on each regulator

43
Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt Normal file
View file

@ -0,0 +1,43 @@
Spreadtrum SC2731 Voltage regulators
The SC2731 integrates low-voltage and low quiescent current DCDC/LDO.
14 LDO and 3 DCDCs are designed for external use. All DCDCs/LDOs have
their own bypass (power-down) control signals. External tantalum or MLCC
ceramic capacitors are recommended to use with these LDOs.
Required properties:
- compatible: should be "sprd,sc27xx-regulator".
List of regulators provided by this controller. It is named according to
its regulator type, BUCK_<name> and LDO_<name>. The definition for each
of these nodes is defined using the standard binding for regulators at
Documentation/devicetree/bindings/regulator/regulator.txt.
The valid names for regulators are:
BUCK:
BUCK_CPU0, BUCK_CPU1, BUCK_RF
LDO:
LDO_CAMA0, LDO_CAMA1, LDO_CAMMOT, LDO_VLDO, LDO_EMMCCORE, LDO_SDCORE,
LDO_SDIO, LDO_WIFIPA, LDO_USB33, LDO_CAMD0, LDO_CAMD1, LDO_CON,
LDO_CAMIO, LDO_SRAM
Example:
regulators {
compatible = "sprd,sc27xx-regulator";
vddarm0: BUCK_CPU0 {
regulator-name = "vddarm0";
regulator-min-microvolt = <400000>;
regulator-max-microvolt = <1996875>;
regulator-ramp-delay = <25000>;
regulator-always-on;
};
vddcama0: LDO_CAMA0 {
regulator-name = "vddcama0";
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <3750000>;
regulator-enable-ramp-delay = <100>;
};
...
};