|  | * Rohm BU21013 Touch Screen | 
|  |  | 
|  | Required properties: | 
|  | - compatible              : "rohm,bu21013_tp" | 
|  | - reg                     :  I2C device address | 
|  |  | 
|  | Optional properties: | 
|  | - touch-gpio              : GPIO pin registering a touch event | 
|  | - <supply_name>-supply    : Phandle to a regulator supply | 
|  | - rohm,touch-max-x        : Maximum outward permitted limit in the X axis | 
|  | - rohm,touch-max-y        : Maximum outward permitted limit in the Y axis | 
|  | - rohm,flip-x             : Flip touch coordinates on the X axis | 
|  | - rohm,flip-y             : Flip touch coordinates on the Y axis | 
|  |  | 
|  | Example: | 
|  |  | 
|  | i2c@80110000 { | 
|  | bu21013_tp@0x5c { | 
|  | compatible = "rohm,bu21013_tp"; | 
|  | reg = <0x5c>; | 
|  | touch-gpio = <&gpio2 20 0x4>; | 
|  | avdd-supply = <&ab8500_ldo_aux1_reg>; | 
|  |  | 
|  | rohm,touch-max-x = <384>; | 
|  | rohm,touch-max-y = <704>; | 
|  | rohm,flip-y; | 
|  | }; | 
|  | }; |