ref: d5f07caf417b068c1049106611b7413f90d12cd6
dir: /sys/src/9/imx8/io.h/
enum {
IRQfiq = -1,
PPI = 16,
SPI = 32,
IRQcntps = PPI+13,
IRQcntpns = PPI+14,
IRQuart1 = SPI+26,
IRQuart2 = SPI+27,
IRQuart3 = SPI+28,
IRQuart4 = SPI+29,
IRQi2c1 = SPI+35,
IRQi2c2 = SPI+36,
IRQi2c3 = SPI+37,
IRQi2c4 = SPI+38,
IRQrdc = SPI+39,
IRQusb1 = SPI+40,
IRQusb2 = SPI+41,
IRQsctr0 = SPI+47,
IRQsctr1 = SPI+48,
IRQenet1 = SPI+118,
};
#define BUSUNKNOWN (-1)