void hw_init(void) { /* Disable watchdog */ at91_disable_wdt(); /* * At this stage the main oscillator * is supposed to be enabled PCK = MCK = MOSC */ /* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */ pmc_cfg_plla(PLLA_SETTINGS); /* Initialize PLLA charge pump */ pmc_init_pll(AT91C_PMC_IPLLA_3); /* Switch PCK/MCK on Main clock output */ pmc_cfg_mck(BOARD_PRESCALER_MAIN_CLOCK); /* Switch PCK/MCK on PLLA output */ pmc_cfg_mck(BOARD_PRESCALER_PLLA); #ifdef CONFIG_USER_HW_INIT /* Set GMAC & EMAC pins to output low */ at91_special_pio_output_low(); #endif /* Init timer */ timer_init(); #ifdef CONFIG_SCLK slowclk_enable_osc32(); #endif /* initialize the dbgu */ initialize_dbgu(); #ifdef CONFIG_DDR2 /* Initialize MPDDR Controller */ ddramc_init(); #endif #ifdef CONFIG_PM_EXTERNAL_DEVICES #ifdef CONFIG_MACB /* Make PHYs to power down mode */ phys_enter_power_down(); #endif /* #ifdef CONFIG_MACB */ #endif /* #ifdef CONFIG_PM_EXTERNAL_DEVICES */ }
void hw_init(void) { /* Disable watchdog */ at91_disable_wdt(); /* * At this stage the main oscillator * is supposed to be enabled PCK = MCK = MOSC */ /* Configure PLLA = MOSC * (PLL_MULA + 1) / PLL_DIVA */ pmc_cfg_plla(PLLA_SETTINGS, PLL_LOCK_TIMEOUT); /* Initialize PLLA charge pump */ pmc_init_pll(AT91C_PMC_IPLLA_3); /* Switch PCK/MCK on Main clock output */ pmc_cfg_mck(BOARD_PRESCALER_MAIN_CLOCK, PLL_LOCK_TIMEOUT); /* Switch PCK/MCK on PLLA output */ pmc_cfg_mck(BOARD_PRESCALER_PLLA, PLL_LOCK_TIMEOUT); #ifdef CONFIG_USER_HW_INIT /* Set GMAC & EMAC pins to output low */ at91_special_pio_output_low(); #endif /* Disable the software modem clock */ at91_disable_smd_clock(); /* Init timer */ timer_init(); #ifdef CONFIG_SCLK slowclk_enable_osc32(); #endif /* initialize the dbgu */ initialize_dbgu(); #ifdef CONFIG_DDR2 /* Initialize MPDDR Controller */ ddramc_init(); #endif #ifdef CONFIG_TWI twi_init(); #endif #ifdef CONFIG_ACT8865 /* Set ACT8865 REG power saving mode */ act8865_set_power_saving_mode(); /* Set ACT8865 output voltage */ sama5d4ek_act8865_set_reg_voltage(); /* Dsiable ACT8865 I2C interface */ if (act8865_workaround_disable_i2c()) while (1) ; #endif #ifdef CONFIG_PM_EXTERNAL_DEVICES #ifdef CONFIG_MACB /* Make PHYs to power down mode */ phys_enter_power_down(); #endif #endif /* #ifdef CONFIG_PM_EXTERNAL_DEVICES */ }