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authorMatti Vaittinen <matti.vaittinen@fi.rohmeurope.com>2020-09-03 20:39:02 +0200
committerMark Brown <broonie@kernel.org>2020-09-04 12:02:39 +0200
commit1d848d681c4d4e148193b699a6e5f222e8621519 (patch)
tree0f024e2fd1b63efd09039ec5bae4912fbd275863 /drivers/regulator/tps65218-regulator.c
parentregulator: bd718x7 initialize regulator config only once (diff)
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regulator: bd718x7 fix regulator states at SUSPEND
The BD718(37/47/50) regulator enable states can be controlled either by SW or by PMIC internal state machine. The bd718x7 driver has not supported leaving the regulators under HW state machine control (except for cases where this is required to avoid boot-up problems due to critical regulators being turned OFF at reset when SNVS used as reset state). On some systems this is undesirable as there now are setups where mixture of SW and HW state machine controlled regulators is needed. Specifically, some SoCs signal SUSPEND state change to PMIC via STBY_REQ line. Now there are setups that expect certain regulators then to be disabled (by PMIC state machine) while other regulators should stay enabled (regardless of HW state => SW control required). Add support for a new device-tree property "rohm,no-regulator-enable-control" which can be used to leave regulator(s) under HW state machine control. Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com> Link: https://lore.kernel.org/r/6ebba33dd08f2dcc9f1137bbff4d2dc905278a5a.1599029335.git.matti.vaittinen@fi.rohmeurope.com Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator/tps65218-regulator.c')
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