1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/mfd/ti_am335x_tscadc.c b/drivers/mfd/ti_am335x_tscadc.c
index dd4bf5816221..8b119ce20b93 100644
--- a/drivers/mfd/ti_am335x_tscadc.c
+++ b/drivers/mfd/ti_am335x_tscadc.c
@@ -53,7 +53,7 @@ void am335x_tsc_se_set_cache(struct ti_tscadc_dev *tsadc, u32 val)
         unsigned long flags;
 
         spin_lock_irqsave(&tsadc->reg_lock, flags);
-        tsadc->reg_se_cache = val;
+        tsadc->reg_se_cache |= val;
         if (tsadc->adc_waiting)
                 wake_up(&tsadc->reg_se_wait);
         else if (!tsadc->adc_in_use)
@@ -96,6 +96,7 @@ static void am335x_tscadc_need_adc(struct ti_tscadc_dev *tsadc)
 void am335x_tsc_se_set_once(struct ti_tscadc_dev *tsadc, u32 val)
 {
         spin_lock_irq(&tsadc->reg_lock);
+        tsadc->reg_se_cache |= val;
         am335x_tscadc_need_adc(tsadc);
 
         tscadc_writel(tsadc, REG_SE, val);