|  | * Renesas R-Car Timer Pulse Unit PWM Controller | 
|  |  | 
|  | Required Properties: | 
|  |  | 
|  | - compatible: should be one of the following. | 
|  | - "renesas,tpu-r8a73a4": for R8A77A4 (R-Mobile APE6) compatible PWM controller. | 
|  | - "renesas,tpu-r8a7740": for R8A7740 (R-Mobile A1) compatible PWM controller. | 
|  | - "renesas,tpu-r8a7790": for R8A7790 (R-Car H2) compatible PWM controller. | 
|  | - "renesas,tpu-sh7372": for SH7372 (SH-Mobile AP4) compatible PWM controller. | 
|  | - "renesas,tpu": for generic R-Car TPU PWM controller. | 
|  |  | 
|  | - reg: Base address and length of each memory resource used by the PWM | 
|  | controller hardware module. | 
|  |  | 
|  | - #pwm-cells: should be 3. See pwm.txt in this directory for a description of | 
|  | the cells format. The only third cell flag supported by this binding is | 
|  | PWM_POLARITY_INVERTED. | 
|  |  | 
|  | Please refer to pwm.txt in this directory for details of the common PWM bindings | 
|  | used by client devices. | 
|  |  | 
|  | Example: R8A7740 (R-Car A1) TPU controller node | 
|  |  | 
|  | tpu: pwm@e6600000 { | 
|  | compatible = "renesas,tpu-r8a7740", "renesas,tpu"; | 
|  | reg = <0xe6600000 0x100>; | 
|  | #pwm-cells = <3>; | 
|  | }; |