PCI1XXXX_SPI_MAX_CLOCK_HZ
if (hz >= PCI1XXXX_SPI_MAX_CLOCK_HZ)
else if ((hz < PCI1XXXX_SPI_MAX_CLOCK_HZ) && (hz >= PCI1XXXX_SPI_CLK_20MHZ))
spi_host->max_speed_hz = PCI1XXXX_SPI_MAX_CLOCK_HZ;