MODE_CTL_PCLK_FREQ_SHIFT
val = (val & MODE_CTL_PCLK_FREQ_MSK) << MODE_CTL_PCLK_FREQ_SHIFT;
~(MODE_CTL_PCLK_FREQ_MSK << MODE_CTL_PCLK_FREQ_SHIFT);
<< MODE_CTL_PCLK_FREQ_SHIFT;