tree a3f1856e09922e4afc9467d091df7d4096d2ea76
parent a085a31af566254fb8f7721911c828c8fa797894
author Maciej Purski <m.purski@samsung.com> 1524494020 +0200
committer Mark Brown <broonie@kernel.org> 1526540749 +0900
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regulator: core: Resolve coupled regulators

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
two 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.

Fill coupling descriptor with data obtained from DTS using previously
defined of_functions. Fail to register a regulator, if some data
inconsistency occurs. If some coupled regulators are not yet registered,
don't fail to register, but try to resolve them in late init call.

Signed-off-by: Maciej Purski <m.purski@samsung.com>
Signed-off-by: Mark Brown <broonie@kernel.org>