linux-kernel - [PATCH 12/14] Documentation: mfd/regulator: s2mps11: Document the "op

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Message-id: <1392123837-5517-13-git-send-email-k.kozlowski@samsung.com>
Date:	Tue, 11 Feb 2014 14:03:55 +0100
From:	Krzysztof Kozlowski <k.kozlowski@...sung.com>
To:	Sangbeom Kim <sbkim73@...sung.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>, linux-kernel@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org
Cc:	Kyungmin Park <kyungmin.park@...sung.com>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Tomasz Figa <t.figa@...sung.com>, devicetree@...r.kernel.org,
	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>
Subject: [PATCH 12/14] Documentation: mfd/regulator: s2mps11: Document the
 "op_mode" bindings

Document the "op_mode" properties parsed from DTS by s2mps11 driver.

S2MPS11/S2MPS14 regulators support different modes of operation:
 - Always off;
 - On/Off controlled by pin/GPIO (PWREN/LDOEN/EMMCEN);
 - Always on;

This is very similar to S5M8767 regulator driver which also supports
opmodes (although S5M8767 have also low-power mode).

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@...sung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
Cc: Mark Brown <broonie@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>
Cc: Tomasz Figa <t.figa@...sung.com>
Cc: devicetree@...r.kernel.org
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Pawel Moll <pawel.moll@....com>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Ian Campbell <ijc+devicetree@...lion.org.uk>
Cc: Kumar Gala <galak@...eaurora.org>
---
 Documentation/devicetree/bindings/mfd/s2mps11.txt |   46 +++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/s2mps11.txt b/Documentation/devicetree/bindings/mfd/s2mps11.txt
index f69bec294f02..ffad6bfe2ebf 100644
--- a/Documentation/devicetree/bindings/mfd/s2mps11.txt
+++ b/Documentation/devicetree/bindings/mfd/s2mps11.txt
@@ -54,6 +54,15 @@ BUCK[3, 4], and BUCK[7, 8, 10]
 The regulator constraints inside the regulator nodes use the standard regulator
 bindings which are documented elsewhere.
 
+On S2MPS14 chipset the driver additionally supports "op_mode" properties for
+each regulator.
+ - op_mode: describes the different operating modes of the regulators with
+	power mode change in SOC. The different possible values are,
+		0 - always off mode
+		1 - on in normal mode
+		3 - suspend mode
+		(NOTE: value of 2 is reserved)
+
 The following are the names of the regulators that the s2mps11 pmic block
 supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number
 as per the datasheet of s2mps11.
@@ -112,3 +121,40 @@ Example:
 			};
 		};
 	};
+
+	s2mps14_pmic@66 {
+		compatible = "samsung,s2mps14-pmic";
+		reg = <0x66>;
+
+		s2m_osc: clocks {
+			compatible = "samsung,s2mps14-clk";
+			#clock-cells = 1;
+			clock-output-names = "xx", "", "zz";
+		};
+
+		regulators {
+			ldo1_reg: LDO1 {
+				regulator-name = "VAP_ALIVE_1.0V";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+				op_mode = <1>; /* Normal Mode */
+			};
+
+			ldo2_reg: LDO2 {
+				regulator-name = "VAP_M1_1.2V";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
+				regulator-always-on;
+				op_mode = <1>; /* Normal Mode */
+			};
+
+			buck1_reg: BUCK1 {
+				regulator-name = "VAP_MIF_1.0V";
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-always-on;
+				op_mode = <3>; /* Standby Mode */
+			};
+		};
+	};
-- 
1.7.9.5

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