Пример #1
0
void __init plat_time_init(void)
{
	unsigned long hz = 0;

	/*
                                                          
                                                               
  */
	write_c0_count(0);
	write_c0_compare(0xffff);

	switch (bcm47xx_bus_type) {
#ifdef CONFIG_BCM47XX_SSB
	case BCM47XX_BUS_TYPE_SSB:
		hz = ssb_cpu_clock(&bcm47xx_bus.ssb.mipscore) / 2;
		break;
#endif
#ifdef CONFIG_BCM47XX_BCMA
	case BCM47XX_BUS_TYPE_BCMA:
		hz = bcma_cpu_clock(&bcm47xx_bus.bcma.bus.drv_mips) / 2;
		break;
#endif
	}

	if (!hz)
		hz = 100000000;

	/*                                                           */
	mips_hpt_frequency = hz;
}
Пример #2
0
void __init
bcm47xx_time_init(void)
{
    unsigned long hz;

    /*
     * Use deterministic values for initial counter interrupt
     * so that calibrate delay avoids encountering a counter wrap.
     */
    write_c0_count(0);
    write_c0_compare(0xffff);

    hz = ssb_cpu_clock(&ssb.mipscore) / 2;
    if (!hz)
        hz = 100000000;

    /* Set MIPS counter frequency for fixed_rate_gettimeoffset() */
    mips_hpt_frequency = hz;
}