PRCM_CLK_MGT_CLKPLLDIV_MASK
val &= PRCM_CLK_MGT_CLKPLLDIV_MASK;
r &= PRCM_CLK_MGT_CLKPLLDIV_MASK;
val &= ~(PRCM_CLK_MGT_CLKPLLDIV_MASK |
val &= ~PRCM_CLK_MGT_CLKPLLDIV_MASK;
div = (val & PRCM_CLK_MGT_CLKPLLDIV_MASK);
val = ((val & ~PRCM_CLK_MGT_CLKPLLDIV_MASK) |
(div & PRCM_CLK_MGT_CLKPLLDIV_MASK));