linux-kernel - [PATCH v2 1/3] regulator: DT: Add DT property for operation mode configuration

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Date:	Mon, 23 May 2016 15:13:29 +0800
From:	Henry Chen <henryc.chen@...iatek.com>
To:	Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>
CC:	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>,
	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-mediatek@...ts.infradead.org>,
	Henry Chen <henryc.chen@...iatek.com>
Subject: [PATCH v2 1/3] regulator: DT: Add DT property for operation mode configuration

Some regulators support their operating mode to be changed by consumers for
module specific purpose. Add a DT property to support this.

Signed-off-by: Henry Chen <henryc.chen@...iatek.com>
---
 Documentation/devicetree/bindings/regulator/regulator.txt |  5 +++++
 include/dt-bindings/regulator/regulator.h                 | 14 ++++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 include/dt-bindings/regulator/regulator.h

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index ecfc593..e505d0b 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -49,6 +49,11 @@ Optional properties:
 	0: Disable active discharge.
 	1: Enable active discharge.
 	Absence of this property will leave configuration to default.
+- 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/dt-bindings/regulator/regulator.h
 
 Deprecated properties:
 - regulator-compatible: If a regulator chip contains multiple
diff --git a/include/dt-bindings/regulator/regulator.h b/include/dt-bindings/regulator/regulator.h
new file mode 100644
index 0000000..2ed1dfd
--- /dev/null
+++ b/include/dt-bindings/regulator/regulator.h
@@ -0,0 +1,14 @@
+/*
+ * This header provides constants for binding regulator.
+ */
+
+#ifndef _DT_BINDINGS_REGULATOR_REGULATOR_H
+#define _DT_BINDINGS_REGULATOR_REGULATOR_H
+
+/* Regulator operating modes */
+#define REGULATOR_OPERATION_MODE_FAST			0x0
+#define REGULATOR_OPERATION_MODE_NORMAL			0x1
+#define REGULATOR_OPERATION_MODE_IDLE			0x2
+#define REGULATOR_OPERATION_MODE_STANDBY		0x3
+
+#endif
-- 
1.8.1.1.dirty