This patch adds support for the Spreadtrum SC2731
voltage regulator device.
Signed-off-by: Erick Chen <erick.chen@xxxxxxxxxxxxxx>
---
Changes since v1:
- Remove reg property.
- Remove regulators sub-node.
---
.../bindings/regulator/sprd,sc2731-regulator.txt | 43 ++++++++++++++++++++
1 file changed, 43 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt
diff --git a/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt
new file mode 100644
index 0000000..63dc078
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/sprd,sc2731-regulator.txt
@@ -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>;
+ };
+ ...
+ };
--
1.7.9.5
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