linux-kernel - [PATCH 2/2] dt-bindings: regulator: Add regulator suspend state for PM state

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Date:	Mon, 09 Jun 2014 19:29:40 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	broonie@...nel.org, lgirdwood@...il.com, grant.likely@...aro.org,
	robh+dt@...nel.org
Cc:	myungjoo.ham@...sung.com, kyungmin.park@...sung.com,
	linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
	Chanwoo Choi <cw00.choi@...sung.com>
Subject: [PATCH 2/2] dt-bindings: regulator: Add regulator suspend state for PM
 state

This patch add regulator suspend state to constraint in dt file. The regulation_
constraints structure already has regulator suspend state field as following.
The regulator suspend state control the state of regulator according to
PM (Power Management) state.
- struct regulator_state state_disk
- struct regulator_state state_mem
- struct regulator_state state_standby

Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 Documentation/devicetree/bindings/regulator/regulator.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt
index e2c7f1e..b2a4a72 100644
--- a/Documentation/devicetree/bindings/regulator/regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/regulator.txt
@@ -19,6 +19,12 @@ Optional properties:
   design requires. This property describes the total system ramp time
   required due to the combination of internal ramping of the regulator itself,
   and board design issues such as trace capacitance and load on the supply.
+- regulator-initial-state: initial state for suspend state
+- regulator-state-[standby/mem/disk] sub-root node for suspend state
+	regulator-volt: voltage consumers may set in suspend state
+	regulator-mode: voltage mode in suspend state
+	regulator-on-in-suspend: regulator should be on in suspend state
+	regulator-off-in-suspend: regulator should be off in suspend state
 
 Deprecated properties:
 - regulator-compatible: If a regulator chip contains multiple
@@ -34,6 +40,12 @@ Example:
 		regulator-max-microvolt = <2500000>;
 		regulator-always-on;
 		vin-supply = <&vin>;
+
+		regulator-state-mem {
+			regulator-volt = <1000000>;
+			regulator-mode = <0x8>;
+			regulator-off-in-suspend;
+		};
 	};
 
 Regulator Consumers:
-- 
1.8.0

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