IMX8QXP_ADR_ADC_FCTRL
fifo_ctrl = readl(adc->regs + IMX8QXP_ADR_ADC_FCTRL);
writel(fifo_ctrl, adc->regs + IMX8QXP_ADR_ADC_FCTRL);
readl(adc->regs + IMX8QXP_ADR_ADC_FCTRL));