REG_STEPDELAY
tiadc_writel(adc_dev, REG_STEPDELAY(steps),
titsc_writel(ts_dev, REG_STEPDELAY(i),
titsc_writel(ts_dev, REG_STEPDELAY(i),
titsc_writel(ts_dev, REG_STEPDELAY(end_step),
titsc_writel(ts_dev, REG_STEPDELAY(end_step),