summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 03:19:15 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 03:19:15 +0400
commit91c2ff7708d4edf73ef1f0abb3ea4a44b4b0cf1d (patch)
tree43ddc350e2ee5e0f20b5273accdcc597b89da1f6 /Documentation
parent1325b6550a7b9cda52ee4c0da04fa9f93d2618fc (diff)
parentf955c8ba265540617da67d528ea74e50d48ad2be (diff)
downloadlinux-91c2ff7708d4edf73ef1f0abb3ea4a44b4b0cf1d.tar.xz
Merge tag 'regulator-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator updates from Mark Brown: "A couple of nice new features this month, the ability to map regulators in order to allow voltage control by external coprocessors is something people have been asking for for a long time. - improved support for switch only "regulators", allowing current state to be read from the parent regulator but no setting. - support for obtaining the register access method used to set voltages, for use in systems which can offload control of this to a coprocessor (typically for DVFS). - support for Active-Semi AC8846, Dialog DA9211 and Texas Instruments TPS65917" * tag 'regulator-v3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (58 commits) regulator: act8865: fix build when OF is not enabled regulator: act8865: add act8846 to DT binding documentation regulator: act8865: add support for act8846 regulator: act8865: prepare support for other act88xx devices regulator: act8865: set correct number of regulators in pdata regulator: act8865: Remove error variable in act8865_pmic_probe regulator: act8865: fix parsing of platform data regulator: tps65090: Set voltage for fixed regulators regulator: core: Allow to get voltage count and list from parent regulator: core: Get voltage from parent if not available regulator: Add missing statics and inlines for stub functions regulator: lp872x: Don't set constraints within the regulator driver regmap: Fix return code for stub regmap_get_device() regulator: s2mps11: Update module description and Kconfig to add S2MPU02 support regulator: Add helpers for low-level register access regmap: Allow regmap_get_device() to be used by modules regmap: Add regmap_get_device regulator: da9211: Remove unnecessary devm_regulator_unregister() calls regulator: Add DT bindings for tps65218 PMIC regulators. regulator: da9211: new regulator driver ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/mfd/palmas.txt2
-rw-r--r--Documentation/devicetree/bindings/regulator/act8865-regulator.txt7
-rw-r--r--Documentation/devicetree/bindings/regulator/palmas-pmic.txt1
-rw-r--r--Documentation/devicetree/bindings/regulator/tps65218.txt23
-rw-r--r--Documentation/power/regulator/consumer.txt35
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);