This patch add haptic of_compatible in order to use the Haptic device driver
using devicetree. and added the related documentation and example.

Signed-off-by: Jaewon Kim <[email protected]>
Acked-by: Chanwoo Choi <[email protected]>
---
 Documentation/devicetree/bindings/mfd/max77693.txt |   19 +++++++++++++++++++
 drivers/mfd/max77693.c                             |    2 +-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/max77693.txt 
b/Documentation/devicetree/bindings/mfd/max77693.txt
index 11921cc..6e30ad8 100644
--- a/Documentation/devicetree/bindings/mfd/max77693.txt
+++ b/Documentation/devicetree/bindings/mfd/max77693.txt
@@ -27,6 +27,18 @@ Optional properties:
 
        [*] refer Documentation/devicetree/bindings/regulator/regulator.txt
 
+- haptic :
+ Required properties:
+       - compatible : Must be "maxim,max77693-hpatic"
+       - pwms : phandle to the physical PWM device,
+               A feel can be changed by changing a peroid cycle.
+ Optional properties:
+        - haptic-supply : power supply for haptic motor
+        - pwm-names : Name to be used by the PWM subsystem for the PWM device
+
+ The haptic require of max77693 have to be instantiated under subnod
+  named "haptic" using the following haptic format in example.
+
 Example:
        max77693@66 {
                compatible = "maxim,max77693";
@@ -52,4 +64,11 @@ Example:
                                        regulator-boot-on;
                        };
                };
+
+               haptic {
+                       compatible = "maxim,max77693-haptic";
+                       haptic-supply = <&haptic_supply>;
+                       pwms = <&pwm 0 38022 0>;
+                       pwm-names = "haptic";
+               };
        };
diff --git a/drivers/mfd/max77693.c b/drivers/mfd/max77693.c
index fbfed56..ceb7ebf 100644
--- a/drivers/mfd/max77693.c
+++ b/drivers/mfd/max77693.c
@@ -46,7 +46,7 @@ static const struct mfd_cell max77693_devs[] = {
        { .name = "max77693-charger", },
        { .name = "max77693-flash", },
        { .name = "max77693-muic", },
-       { .name = "max77693-haptic", },
+       { .name = "max77693-haptic", .of_compatible = "maxim,max77693-haptic" },
 };
 
 static const struct regmap_config max77693_regmap_config = {
-- 
1.7.9.5

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