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| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-06-11 17:37:05 -0700 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-06-12 13:16:57 +0100 |
| commit | 57f66b78860968fc7eddc9ce25f8e57f7e5000bd (patch) | |
| tree | 5ee90fa99fdd1277706faa3bef39522d26ebc4bc /include/linux/regulator | |
| parent | 23c779b9f9161d6568d3b2fca06e70ad182c480c (diff) | |
| download | lwn-57f66b78860968fc7eddc9ce25f8e57f7e5000bd.tar.gz lwn-57f66b78860968fc7eddc9ce25f8e57f7e5000bd.zip | |
regulator: Add soft start support
Some regulators support a "soft start" feature where the voltage
ramps up slowly when the regulator is enabled. Add an op
(set_soft_start) and a DT property + constraint to support this.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regulator')
| -rw-r--r-- | include/linux/regulator/driver.h | 2 | ||||
| -rw-r--r-- | include/linux/regulator/machine.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h index 76144a337ff7..e0635d0894aa 100644 --- a/include/linux/regulator/driver.h +++ b/include/linux/regulator/driver.h @@ -161,6 +161,8 @@ struct regulator_ops { unsigned int old_selector, unsigned int new_selector); + int (*set_soft_start) (struct regulator_dev *); + /* report regulator status ... most other accessors report * control inputs, this reports results of combining inputs * from Linux (and other sources) with the actual load. diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 8ffb0619a03c..7f7d0a3fe1e1 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -142,6 +142,7 @@ struct regulation_constraints { unsigned boot_on:1; /* bootloader/firmware enabled regulator */ unsigned apply_uV:1; /* apply uV constraint if min == max */ unsigned ramp_disable:1; /* disable ramp delay */ + unsigned soft_start:1; /* ramp voltage slowly */ unsigned pull_down:1; /* pull down resistor when regulator off */ }; |