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| author | Boris Brezillon <boris.brezillon@free-electrons.com> | 2016-06-14 11:13:22 +0200 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2016-07-25 15:34:06 +0200 |
| commit | 58fd822b2e344edae6b4dbc09b19bd0c4a2f8f60 (patch) | |
| tree | 3d9e96437051d333484662acdc007196a89fc300 /Documentation | |
| parent | ea398e28739e25651ede7ddf5aeb57cbcbc8ca7d (diff) | |
| download | linux-0-day-58fd822b2e344edae6b4dbc09b19bd0c4a2f8f60.tar.gz linux-0-day-58fd822b2e344edae6b4dbc09b19bd0c4a2f8f60.tar.xz | |
regulator: pwm: Document pwm-dutycycle-unit and pwm-dutycycle-range
Document the pwm-dutycycle-unit and pwm-dutycycle-range properties.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Brian Norris <briannorris@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/regulator/pwm-regulator.txt | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/regulator/pwm-regulator.txt b/Documentation/devicetree/bindings/regulator/pwm-regulator.txt index dd6f59cf1455e..3aeba9f86ed8e 100644 --- a/Documentation/devicetree/bindings/regulator/pwm-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/pwm-regulator.txt @@ -34,6 +34,18 @@ 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. @@ -53,6 +65,13 @@ Continuous Voltage With Enable GPIO Example: 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: |