ZXI2C_REG_HCR
tmp = ioread8(base + ZXI2C_REG_HCR);
iowrite8(tmp | ZXI2C_HCR_RST_FIFO, base + ZXI2C_REG_HCR);
tmp = ioread8(base + ZXI2C_REG_HCR);
iowrite8(tmp | ZXI2C_HCR_RST_FIFO, base + ZXI2C_REG_HCR);