CCM_CCSR_PLL1_SW_CLK_SEL
if (!(ccsr & CCM_CCSR_PLL1_SW_CLK_SEL))
HCLR4(sc, CCM_CCSR, CCM_CCSR_PLL1_SW_CLK_SEL);
HSET4(sc, CCM_CCSR, CCM_CCSR_PLL1_SW_CLK_SEL);