linux-kernel - [PATCH v2 2/2] regulator: s5m8767: Document new bindings for Buck9 GPIO control

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Date:	Wed, 22 Jan 2014 17:07:28 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.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>,
	Rob Landley <rob@...dley.net>,
	Sangbeom Kim <sbkim73@...sung.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Grant Likely <grant.likely@...aro.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Amit Daniel Kachhap <amit.daniel@...sung.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org
Cc:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
Subject: [PATCH v2 2/2] regulator: s5m8767: Document new bindings for Buck9
 GPIO control

Add documentation for new bindings for controlling (enable/disable) the
Buck9 Converter by GPIO (BUCK9EN).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc: Kyungmin Park <kyungmin.park@...sung.com>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>
---
 .../bindings/regulator/s5m8767-regulator.txt       |   16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt b/Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt
index fc6b38f035bd..b52ee77dc4c0 100644
--- a/Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/s5m8767-regulator.txt
@@ -69,13 +69,18 @@ sub-node should be of the format as listed below.
 		};
 	};
 The above regulator entries are defined in regulator bindings documentation
-except op_mode description.
+except these properties:
 	- op_mode: describes the different operating modes of the LDO's with
 		power mode change in SOC. The different possible values are,
 		0 - always off mode
 		1 - on in normal mode
 		2 - low power mode
 		3 - suspend mode
+	- s5m8767,pmic-ext-control-enable: regulator can be enabled/disabled
+		by GPIO (valid only for buck9).
+	- s5m8767,pmic-ext-control-gpio: GPIO specifier for one GPIO
+		controlling this regulator (valid only for buck9).
+		This property is required when 's5m8767,pmic-ext-control-enable' is specified.
 
 The following are the names of the regulators that the s5m8767 pmic block
 supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
@@ -148,5 +153,14 @@ Example:
 				regulator-always-on;
 				regulator-boot-on;
 			};
+
+			vemmc_reg: BUCK9 {
+				regulator-name = "VMEM_VDD_2.8V";
+				regulator-min-microvolt = <2800000>;
+				regulator-max-microvolt = <2800000>;
+				op_mode = <3>; /* Standby Mode */
+				s5m8767,pmic-ext-control-enable;
+				s5m8767,pmic-ext-control-gpio = <&gpk0 2 0>;
+			};
 		};
 	};
-- 
1.7.9.5

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