regulator: Introduce property to flag set-load support

Introduce "regulator-allow-set-load" property to make it possible to
flag in the board configuration that a regulator is allowed to have the
load requirements changed.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

2 files changed, 4 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index 24bd422cecd5..1d112fc456aa 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -11,6 +11,7 @@ Optional properties:
 - regulator-always-on: boolean, regulator should never be disabled
 - regulator-boot-on: bootloader/firmware enabled regulator
 - regulator-allow-bypass: allow the regulator to go into bypass mode
+- regulator-allow-set-load: allow the regulator performance level to be configured
 - <name>-supply: phandle to the parent supply/regulator node
 - regulator-ramp-delay: ramp delay for regulator(in uV/uS)
   For hardware which supports disabling ramp rate, it should be explicitly
diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c
index 250700c853bf..499e437c7e91 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -76,6 +76,9 @@ static void of_get_regulation_constraints(struct device_node *np,
         if (of_property_read_bool(np, "regulator-allow-bypass"))
                 constraints->valid_ops_mask |= REGULATOR_CHANGE_BYPASS;
 
+        if (of_property_read_bool(np, "regulator-allow-set-load"))
+                constraints->valid_ops_mask |= REGULATOR_CHANGE_DRMS;
+
         ret = of_property_read_u32(np, "regulator-ramp-delay", &pval);
         if (!ret) {
                 if (pval)