/* Reset Peripheral, hold. 
Reset particular peripheral, and hold in reset state. */
void rcc_periph_reset_hold(enum rcc_periph_rst rst)
/* Reset Peripheral, hold. 
Reset particular peripheral, and hold in reset state. */
void rcc_periph_reset_hold(enum rcc_periph_rst rst)
{
	_RCC_REG(rst) |= _RCC_BIT(rst);
}