From: pascal paillet <p.paillet@xxxxxx>
The STPMU1 regulators supply power to the application processor as well as
to the external system peripherals such as DDR, Flash memories and system
devices.
Signed-off-by: pascal paillet <p.paillet@xxxxxx>
---
.../bindings/regulator/st,stpmu1-regulator.txt | 72 ++++++++++++++++++++++
1 file changed, 72 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/st,stpmu1-regulator.txt
diff --git a/Documentation/devicetree/bindings/regulator/st,stpmu1-regulator.txt b/Documentation/devicetree/bindings/regulator/st,stpmu1-regulator.txt
new file mode 100644
index 0000000..888e759
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/st,stpmu1-regulator.txt
@@ -0,0 +1,72 @@
+STMicroelectronics STPMU1 Voltage regulators
+
+Regulator Nodes are optional depending on needs.
+
+Available Regulators in STPMU1 device are:
+ - buck1 for Buck BUCK1
+ - buck2 for Buck BUCK2
+ - buck3 for Buck BUCK3
+ - buck4 for Buck BUCK4
+ - ldo1 for LDO LDO1
+ - ldo2 for LDO LDO2
+ - ldo3 for LDO LDO3
+ - ldo4 for LDO LDO4
+ - ldo5 for LDO LDO5
+ - ldo6 for LDO LDO6
+ - vref_ddr for LDO Vref DDR
+ - boost for Buck BOOST
+ - pwr_sw1 for VBUS_OTG switch
+ - pwr_sw2 for SW_OUT switch
+
+Switches are fixed voltage regulators with only enable/disable capability.
+
+Optional properties:
+- st,mask_reset: stay on during Reset for particular regulator
+- regulator-pull-down: enable high pull down
+ if not specified light pull down is used
+- regulator-over-current-protection:
+ if set, all regulators are switched off in case of over-current detection
+ on this regulator,
+ if not set, the driver only send an over-current event.
+- interrupt-parent: phandle to the parent interrupt controller
+- interrupts: index of current limit detection interrupt
+- <regulator>-supply: phandle to the parent supply/regulator node
+ each regulator supply can be described except vref_ddr.
+
+Example:
+regulators {
+ compatible = "st,stpmu1-regulators";
+
+ ldo6-supply = <&v3v3>;
+
+ vdd_core: regulator@0 {
+ regulator-compatible = "buck1";
+ regulator-name = "vdd_core";
+ interrupts = <IT_CURLIM_BUCK1 0>;
+ interrupt-parent = <&pmic>;
+ st,mask_reset;
+ regulator-pull-down;
+ st,pulldown_config = <2>;
+ regulator-min-microvolt = <700000>;
+ regulator-max-microvolt = <1200000>;
+ };
+
+ v3v3: buck4 {
+ regulator-compatible = "buck4";
+ regulator-name = "v3v3";
+ interrupts = <IT_CURLIM_BUCK4 0>;
+ interrupt-parent = <&mypmic>;
+
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ v1v8: ldo6 {
+ regulator-compatible = "ldo6";
+ regulator-name = "v1v8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-over-current-protection;
+ };
+
+};
--
1.9.1
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