summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree
diff options
context:
space:
mode:
authorThierry Reding <thierry.reding@gmail.com>2016-07-25 16:23:40 +0200
committerThierry Reding <thierry.reding@gmail.com>2016-07-25 16:23:40 +0200
commit53de7c26ded7f5e954bfc202dffc43c0dd165337 (patch)
tree1f6be162967231ef755f6a1b5794d11e62bf63a7 /Documentation/devicetree
parent070d9a930620399a83127be6e7c6d2c2cc84a553 (diff)
parent58fd822b2e344edae6b4dbc09b19bd0c4a2f8f60 (diff)
downloadlinux-stable-53de7c26ded7f5e954bfc202dffc43c0dd165337.tar.gz
linux-stable-53de7c26ded7f5e954bfc202dffc43c0dd165337.tar.bz2
linux-stable-53de7c26ded7f5e954bfc202dffc43c0dd165337.zip
Merge branch 'for-4.8/regulator' into for-next
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/regulator/pwm-regulator.txt26
1 files changed, 25 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/regulator/pwm-regulator.txt b/Documentation/devicetree/bindings/regulator/pwm-regulator.txt
index ed936f0f34f2..3aeba9f86ed8 100644
--- a/Documentation/devicetree/bindings/regulator/pwm-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/pwm-regulator.txt
@@ -34,20 +34,44 @@ Only required for Voltage Table Mode:
First cell is voltage in microvolts (uV)
Second cell is duty-cycle in percent (%)
+Optional properties for Continuous mode:
+- pwm-dutycycle-unit: Integer value encoding the duty cycle unit. If not
+ defined, <100> is assumed, meaning that
+ pwm-dutycycle-range contains values expressed in
+ percent.
+
+- pwm-dutycycle-range: Should contain 2 entries. The first entry is encoding
+ the dutycycle for regulator-min-microvolt and the
+ second one the dutycycle for regulator-max-microvolt.
+ Duty cycle values are expressed in pwm-dutycycle-unit.
+ If not defined, <0 100> is assumed.
+
NB: To be clear, if voltage-table is provided, then the device will be used
in Voltage Table Mode. If no voltage-table is provided, then the device will
be used in Continuous Voltage Mode.
+Optional properties:
+--------------------
+- enable-gpios: GPIO to use to enable/disable the regulator
+
Any property defined as part of the core regulator binding can also be used.
(See: ../regulator/regulator.txt)
-Continuous Voltage Example:
+Continuous Voltage With Enable GPIO Example:
pwm_regulator {
compatible = "pwm-regulator;
pwms = <&pwm1 0 8448 0>;
+ enable-gpios = <&gpio0 23 GPIO_ACTIVE_HIGH>;
regulator-min-microvolt = <1016000>;
regulator-max-microvolt = <1114000>;
regulator-name = "vdd_logic";
+ /* unit == per-mille */
+ pwm-dutycycle-unit = <1000>;
+ /*
+ * Inverted PWM logic, and the duty cycle range is limited
+ * to 30%-70%.
+ */
+ pwm-dutycycle-range <700 300>; /* */
};
Voltage Table Example: