For better power efficiency, regulator subsystem provides operating mode. (fast, normal, idle and standby) The operating mode is selective by a regulator consumer.
With this patch, regulator operating mode can be set in the DT structure. If any operating mode is configured, then 'valid_ops_mask' should be set with REGULATOR_CHANGE_MODE. Signed-off-by: Milo(Woogyom) Kim <[email protected]> --- .../devicetree/bindings/regulator/regulator.txt | 4 ++++ drivers/regulator/of_regulator.c | 13 +++++++++++++ 2 files changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt index ecfc6cc..2b89616 100644 --- a/Documentation/devicetree/bindings/regulator/regulator.txt +++ b/Documentation/devicetree/bindings/regulator/regulator.txt @@ -11,6 +11,10 @@ Optional properties: - regulator-boot-on: bootloader/firmware enabled regulator - <name>-supply: phandle to the parent supply/regulator node - regulator-ramp-delay: ramp delay for regulator(in uV/uS) +- regulator-mode-fast: fast operating mode +- regulator-mode-normal: normal operating mode +- regulator-mode-idle: idle operating mode +- regulator-mode-standby: standby operating mode Deprecated properties: - regulator-compatible: If a regulator chip contains multiple diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index 66ca769..aebe9a4 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -64,6 +64,19 @@ static void of_get_regulation_constraints(struct device_node *np, ramp_delay = of_get_property(np, "regulator-ramp-delay", NULL); if (ramp_delay) constraints->ramp_delay = be32_to_cpu(*ramp_delay); + + /* Operation mode configuration */ + if (of_find_property(np, "regulator-mode-fast", NULL)) + constraints->valid_modes_mask |= REGULATOR_MODE_FAST; + if (of_find_property(np, "regulator-mode-normal", NULL)) + constraints->valid_modes_mask |= REGULATOR_MODE_NORMAL; + if (of_find_property(np, "regulator-mode-idle", NULL)) + constraints->valid_modes_mask |= REGULATOR_MODE_IDLE; + if (of_find_property(np, "regulator-mode-standby", NULL)) + constraints->valid_modes_mask |= REGULATOR_MODE_STANDBY; + + if (constraints->valid_modes_mask) + constraints->valid_ops_mask |= REGULATOR_CHANGE_MODE; } /** -- 1.7.9.5 Best Regards, Milo -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
