regulator: tps65023: Set missing bit for update core-voltage

Setting the GO bit in CTRL2 for updating the core voltage

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 15 insertions, 4 deletions

diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index b912daae9fa0..11c9e1f14079 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -284,6 +284,7 @@ static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
         struct tps_pmic *tps = rdev_get_drvdata(dev);
         int dcdc = rdev_get_id(dev);
         int vsel;
+        int ret;
 
         if (dcdc != TPS65023_DCDC_1)
                 return -EINVAL;
@@ -306,11 +307,21 @@ static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
 
         *selector = vsel;
 
-        /* write to the register in case we found a match */
         if (vsel == tps->info[dcdc]->table_len)
-                return -EINVAL;
-        else
-                return tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel);
+                goto failed;
+
+        ret = tps_65023_reg_write(tps, TPS65023_REG_DEF_CORE, vsel);
+
+        /* Tell the chip that we have changed the value in DEFCORE
+         * and its time to update the core voltage
+         */
+        tps_65023_set_bits(tps, TPS65023_REG_CON_CTRL2,
+                                                TPS65023_REG_CTRL2_GO);
+
+        return ret;
+
+failed:
+        return -EINVAL;
 }
 
 static int tps65023_ldo_get_voltage(struct regulator_dev *dev)