Document the st-pwm regulator
Signed-off-by: Chris Zhong <z...@rock-chips.com>
---
.../devicetree/bindings/regulator/st-pwm.txt | 35 ++++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/st-pwm.txt
diff --git a/Documentation/devicetree/bindings/regulator/st-pwm.txt
b/Documentation/devicetree/bindings/regulator/st-pwm.txt
new file mode 100644
index 0000000..38fec1d
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/st-pwm.txt
@@ -0,0 +1,35 @@
+st pwm regulator bindings
+
+Required properties:
+ - compatible: "pwm-regulator"
+ - pwms: OF device-tree PWM specification (see PWM binding pwm.txt)
+ - voltage-table: voltage and duty table, include 2 merbers in each set of
+ brackets, first one is voltage(unit: uv), the next is duty(unit: percent)
+ - pwm-reg-period: duration (in nanoseconds) of one cycle
+
+Any property defined as part of the core regulator binding defined in
+regulator.txt can also be used.
+
+Example:
+ pwm_regulator {
+ compatible = "st,b2105-pwm-regulator;
+ pwms = <&pwm1 0 1000000 0>;
+
+ voltage-table = <1114000 0>,
+ <1095000 10>,
+ <1076000 20>,
+ <1056000 30>,
+ <1036000 40>,
+ <1016000 50>;
+
+ pwm-reg-period = <8448>;
+ regulators {
+ vdd_logic: pwm-regulator {
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <1016000>;
+ regulator-max-microvolt = <1114000>;
+ regulator-name = "vdd_logic";
+ };
+ };
+ };
--
1.7.9.5
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