linux-kernel - [PATCH v2 2/5] regulator: Introduce property to flag drms

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Date:	Wed, 1 Apr 2015 15:55:43 -0700
From:	Bjorn Andersson <bjorn.andersson@...ymobile.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>
CC:	Stephen Boyd <sboyd@...eaurora.org>,
	Andy Gross <agross@...eaurora.org>,
	Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-msm@...r.kernel.org>
Subject: [PATCH v2 2/5] regulator: Introduce property to flag drms

Introduce "regulator-allow-drms" to make it possible for board
configuration to enable drms for regulators.

Signed-off-by: Bjorn Andersson <bjorn.andersson@...ymobile.com>
---
 Documentation/devicetree/bindings/regulator/regulator.txt | 1 +
 drivers/regulator/of_regulator.c                          | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index abb26b5..a2377cb 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -10,6 +10,7 @@ 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-drms: allow dynamic regulator mode switching
 - <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 24e812c..bb52532 100644
--- a/drivers/regulator/of_regulator.c
+++ b/drivers/regulator/of_regulator.c
@@ -70,6 +70,9 @@ 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-drms"))
+		constraints->valid_ops_mask |= REGULATOR_CHANGE_DRMS;
+
 	ret = of_property_read_u32(np, "regulator-ramp-delay", &pval);
 	if (!ret) {
 		if (pval)
-- 
1.8.2.2

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