18c2ecf20Sopenharmony_ciMaxim Integrated SPI-based USB 2.0 host controller MAX3421E 28c2ecf20Sopenharmony_ci 38c2ecf20Sopenharmony_ciRequired properties: 48c2ecf20Sopenharmony_ci - compatible: Should be "maxim,max3421" 58c2ecf20Sopenharmony_ci - spi-max-frequency: maximum frequency for this device must not exceed 26 MHz. 68c2ecf20Sopenharmony_ci - reg: chip select number to which this device is connected. 78c2ecf20Sopenharmony_ci - maxim,vbus-en-pin: <GPOUTx ACTIVE_LEVEL> 88c2ecf20Sopenharmony_ci GPOUTx is the number (1-8) of the GPOUT pin of MAX3421E to drive Vbus. 98c2ecf20Sopenharmony_ci ACTIVE_LEVEL is 0 or 1. 108c2ecf20Sopenharmony_ci - interrupts: the interrupt line description for the interrupt controller. 118c2ecf20Sopenharmony_ci The driver configures MAX3421E for active low level triggered interrupts, 128c2ecf20Sopenharmony_ci configure your interrupt line accordingly. 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciExample: 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci usb@0 { 178c2ecf20Sopenharmony_ci compatible = "maxim,max3421"; 188c2ecf20Sopenharmony_ci reg = <0>; 198c2ecf20Sopenharmony_ci maxim,vbus-en-pin = <3 1>; 208c2ecf20Sopenharmony_ci spi-max-frequency = <26000000>; 218c2ecf20Sopenharmony_ci interrupt-parent = <&PIC>; 228c2ecf20Sopenharmony_ci interrupts = <42>; 238c2ecf20Sopenharmony_ci }; 24