linux-kernel - [PATCH v5 3/3] mfd: max77693: Update DT binding to support haptic

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Message-id: <1410972026-25189-4-git-send-email-jaewon02.kim@samsung.com>
Date:	Thu, 18 Sep 2014 01:40:26 +0900
From:	Jaewon Kim <jaewon02.kim@...sung.com>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Chanwoo Choi <cw00.choi@...sung.com>, linux-kernel@...r.kernel.org,
	Jaewon Kim <jaewon02.kim@...sung.com>
Subject: [PATCH v5 3/3] mfd: max77693: Update DT binding to support haptic

This patch add haptic DT binding documentation and example
to support haptic driver in max77693 Multifunction device.

Signed-off-by: Jaewon Kim <jaewon02.kim@...sung.com>
Acked-by: Chanwoo Choi <cw00.choi@...sung.com>
---
 Documentation/devicetree/bindings/mfd/max77693.txt |   21 ++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt b/Documentation/devicetree/bindings/mfd/max77693.txt
index 11921cc..01e9f30 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -27,6 +27,20 @@ Optional properties:
 
 	[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
 
+- haptic : The MAX77693 haptic device utilises a PWM controlled motor to provide
+  users with tactile feedback. PWM period and duty-cycle are varied in
+  order to provide the approprite level of feedback.
+
+ Required properties:
+	- compatible : Must be "maxim,max77693-hpatic"
+	- haptic-supply : power supply for the haptic motor
+	[*] refer Documentation/devicetree/bindings/regulator/regulator.txt
+	- pwms : phandle to the physical PWM(Pulse Width Modulation) device.
+	 PWM properties should be named "pwms". And number of cell is different
+	 for each pwm device.
+	 To get more informations, please refer to documentaion.
+	[*] refer Documentation/devicetree/bindings/pwm/pwm.txt
+
 Example:
 	max77693@66 {
 		compatible = "maxim,max77693";
@@ -52,4 +66,11 @@ Example:
 					regulator-boot-on;
 			};
 		};
+
+		haptic {
+			compatible = "maxim,max77693-haptic";
+			haptic-supply = <&haptic_supply>;
+			pwms = <&pwm 0 40000 0>;
+			pwm-names = "haptic";
+		};
 	};
-- 
1.7.9.5

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