diff options
| author | Maciej Purski <m.purski@samsung.com> | 2018-04-23 16:33:39 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-05-17 16:05:48 +0900 |
| commit | a085a31af566254fb8f7721911c828c8fa797894 (patch) | |
| tree | 138f241b458d6ddf3b1e80d2765e16df1fcba36f /include/linux/regulator/machine.h | |
| parent | f98618b34542706eddc3b66abc271f1c8d8c4a05 (diff) | |
| download | linux-a085a31af566254fb8f7721911c828c8fa797894.tar.bz2 | |
regulator: core: Parse coupled regulators properties
On Odroid XU3/4 and other Exynos5422 based boards there is a case, that
different devices on the board are supplied by different regulators
with non-fixed voltages. If one of these devices temporarily requires
higher voltage, there might occur a situation that the spread between
devices' voltages is so high, that there is a risk of changing
'high' and 'low' states on the interconnection between devices powered
by those regulators.
Add new structure "coupling_desc" to regulator_dev, which contains
pointers to all coupled regulators including the owner of the structure,
number of coupled regulators and counter of currently resolved
regulators.
Add of_functions to parse all data needed in regulator coupling.
Provide method to check DTS data consistency. Check if each coupled
regulator's max_spread is equal and if their lists of regulators match.
Signed-off-by: Maciej Purski <m.purski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/linux/regulator/machine.h')
| -rw-r--r-- | include/linux/regulator/machine.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h index 93a04893c739..3468703d663a 100644 --- a/include/linux/regulator/machine.h +++ b/include/linux/regulator/machine.h @@ -103,6 +103,7 @@ struct regulator_state { * @ilim_uA: Maximum input current. * @system_load: Load that isn't captured by any consumer requests. * + * @max_spread: Max possible spread between coupled regulators * @valid_modes_mask: Mask of modes which may be configured by consumers. * @valid_ops_mask: Operations which may be performed by consumers. * @@ -154,6 +155,9 @@ struct regulation_constraints { int system_load; + /* used for coupled regulators */ + int max_spread; + /* valid regulator operating modes for this machine */ unsigned int valid_modes_mask; |