Some regulators support their operating mode to be changed by consumers for module specific purpose. This patch adds support to parse those properties and fill the regulator constraints so the regulator core can call the regualtor_set_mode to change the modes. Signed-off-by: Henry Chen <henryc.chen@xxxxxxxxxxxx> --- Documentation/devicetree/bindings/regulator/regulator.txt | 10 ++++++++++ drivers/regulator/of_regulator.c | 14 ++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt index ecfc593..88f98f0 100644 --- a/Documentation/devicetree/bindings/regulator/regulator.txt +++ b/Documentation/devicetree/bindings/regulator/regulator.txt @@ -49,6 +49,16 @@ Optional properties: 0: Disable active discharge. 1: Enable active discharge. Absence of this property will leave configuration to default. +- regulator-allow-change-mode: allow the regulator mode to be configured +- regulator-supported-modes: Regulators can run in a variety of different operating + modes depending on output load. This allows further system power savings by + selecting the best (and most efficient) regulator mode for a desired load. + The definition for each of these operation is defined at + include/linux/regulator/consumer.h + 0: FAST. + 1: NORMAL. + 2: IDLE. + 3: STANDBY. 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 6b0aa80..12fe8c8 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -167,6 +167,20 @@ static void of_get_regulation_constraints(struct device_node *np, suspend_state = NULL; suspend_np = NULL; } + + if (of_property_read_bool(np, "regulator-allow-change-mode")) + constraints->valid_ops_mask |= REGULATOR_CHANGE_MODE; + + ret = of_property_count_elems_of_size(np, + "regulator-supported-modes", + sizeof(u32)); + for (i = 0; i < ret; i++) { + u32 mode; + + of_property_read_u32_index(np, "regulator-supported-modes", + i, &mode); + constraints->valid_modes_mask |= (1 << mode); + } } /** -- 1.8.1.1.dirty -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html