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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 10:20:34 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-10 10:20:34 -0800
commit269d430131b699c2cadf58495f025a4092959ef5 (patch)
treed9972cd7e03f82b6ac59bc471fb59e49dc6fcaab /Documentation/devicetree
parentd52739c62e0096dccea59f012d80256c6e359a98 (diff)
parent0c437c4ae71c0a8110eb21c06b99853c7056b317 (diff)
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (40 commits) regulator: set constraints.apply_uV to 0 in of_get_fixed_voltage_config regulator: max8925: fix enabled/disabled judgement mistake regulator: add regulator_bulk_force_disable function regulator: pass regulator_register of_node in fixed voltage driver regulator: add regulator_force_disable() definition for !CONFIG_REGULATOR regulator: Enable supply regulator if child rail is enabled. regulator: mc13892: Convert to devm_kzalloc() regulator: mc13783: Convert to devm_kzalloc() regulator: Fix checking return value of create_regulator regulator: Fix the error handling if create_regulator fails regulator: Export regulator_is_supported_voltage() regulator: mc13892: add device tree probe support regulator: mc13892: remove the unnecessary prefix from regulator name regulator: Convert wm831x regulator drivers to devm_kzalloc() regulator: da9052: Staticize non-exported symbols regulator: Replace kzalloc with devm_kzalloc and if-else with a switch-case for da9052-regulator regulator: Update da9052-regulator for DT changes regulator: DA9052/53 Regulator support regulator: pass device_node to of_get_regulator_init_data() regulator: If a single voltage is set with device tree then set apply_uV ...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/regulator/fixed-regulator.txt29
-rw-r--r--Documentation/devicetree/bindings/regulator/regulator.txt54
2 files changed, 83 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/fixed-regulator.txt b/Documentation/devicetree/bindings/regulator/fixed-regulator.txt
new file mode 100644
index 0000000..9cf57fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/fixed-regulator.txt
@@ -0,0 +1,29 @@
+Fixed Voltage regulators
+
+Required properties:
+- compatible: Must be "regulator-fixed";
+
+Optional properties:
+- gpio: gpio to use for enable control
+- startup-delay-us: startup time in microseconds
+- enable-active-high: Polarity of GPIO is Active high
+If this property is missing, the default assumed is Active low.
+
+Any property defined as part of the core regulator
+binding, defined in regulator.txt, can also be used.
+However a fixed voltage regulator is expected to have the
+regulator-min-microvolt and regulator-max-microvolt
+to be the same.
+
+Example:
+
+ abc: fixedregulator@0 {
+ compatible = "regulator-fixed";
+ regulator-name = "fixed-supply";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ gpio = <&gpio1 16 0>;
+ startup-delay-us = <70000>;
+ enable-active-high;
+ regulator-boot-on
+ };
diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
new file mode 100644
index 0000000..5b7a408
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -0,0 +1,54 @@
+Voltage/Current Regulators
+
+Optional properties:
+- regulator-name: A string used as a descriptive name for regulator outputs
+- regulator-min-microvolt: smallest voltage consumers may set
+- regulator-max-microvolt: largest voltage consumers may set
+- regulator-microvolt-offset: Offset applied to voltages to compensate for voltage drops
+- regulator-min-microamp: smallest current consumers may set
+- regulator-max-microamp: largest current consumers may set
+- regulator-always-on: boolean, regulator should never be disabled
+- regulator-boot-on: bootloader/firmware enabled regulator
+- <name>-supply: phandle to the parent supply/regulator node
+
+Example:
+
+ xyzreg: regulator@0 {
+ regulator-min-microvolt = <1000000>;
+ regulator-max-microvolt = <2500000>;
+ regulator-always-on;
+ vin-supply = <&vin>;
+ };
+
+Regulator Consumers:
+Consumer nodes can reference one or more of its supplies/
+regulators using the below bindings.
+
+- <name>-supply: phandle to the regulator node
+
+These are the same bindings that a regulator in the above
+example used to reference its own supply, in which case
+its just seen as a special case of a regulator being a
+consumer itself.
+
+Example of a consumer device node (mmc) referencing two
+regulators (twl_reg1 and twl_reg2),
+
+ twl_reg1: regulator@0 {
+ ...
+ ...
+ ...
+ };
+
+ twl_reg2: regulator@1 {
+ ...
+ ...
+ ...
+ };
+
+ mmc: mmc@0x0 {
+ ...
+ ...
+ vmmc-supply = <&twl_reg1>;
+ vmmcaux-supply = <&twl_reg2>;
+ };
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