ccu.c

#include "arch.h"
 
/* Clock control unit */
#define CCU_BASE_ADDR 0x01C20000
 
#define PPL_PERIPH0_CTRL_REG 0x0028
 
void ccu_init_clock(void)
{
    mmio_write32(CCU_BASE_ADDR + PPL_PERIPH0_CTRL_REG, 0x90041811);
    while(!(mmio_read32(CCU_BASE_ADDR + PPL_PERIPH0_CTRL_REG) & (1 << 28)));
}