1*4882a593SmuzhiyunMaxim Integrated SPI-based USB 2.0 host controller MAX3421E 2*4882a593Smuzhiyun 3*4882a593SmuzhiyunRequired properties: 4*4882a593Smuzhiyun - compatible: Should be "maxim,max3421" 5*4882a593Smuzhiyun - spi-max-frequency: maximum frequency for this device must not exceed 26 MHz. 6*4882a593Smuzhiyun - reg: chip select number to which this device is connected. 7*4882a593Smuzhiyun - maxim,vbus-en-pin: <GPOUTx ACTIVE_LEVEL> 8*4882a593Smuzhiyun GPOUTx is the number (1-8) of the GPOUT pin of MAX3421E to drive Vbus. 9*4882a593Smuzhiyun ACTIVE_LEVEL is 0 or 1. 10*4882a593Smuzhiyun - interrupts: the interrupt line description for the interrupt controller. 11*4882a593Smuzhiyun The driver configures MAX3421E for active low level triggered interrupts, 12*4882a593Smuzhiyun configure your interrupt line accordingly. 13*4882a593Smuzhiyun 14*4882a593SmuzhiyunExample: 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun usb@0 { 17*4882a593Smuzhiyun compatible = "maxim,max3421"; 18*4882a593Smuzhiyun reg = <0>; 19*4882a593Smuzhiyun maxim,vbus-en-pin = <3 1>; 20*4882a593Smuzhiyun spi-max-frequency = <26000000>; 21*4882a593Smuzhiyun interrupt-parent = <&PIC>; 22*4882a593Smuzhiyun interrupts = <42>; 23*4882a593Smuzhiyun }; 24