regulator: tps65023: Fixes i2c configuration issues

Allow i2c core voltage adjustments by clearing CORE ADJ Allowed bit in CTRL2

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>
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index a81abd4..b912daa 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -70,6 +70,13 @@
 #define TPS65023_REG_CTRL2_DCDC1	BIT(2)
 #define TPS65023_REG_CTRL2_DCDC3	BIT(0)
 
+/* REG_CTRL2 bitfields */
+#define TPS65023_REG_CTRL2_GO		BIT(7)
+#define TPS65023_REG_CTRL2_CORE_ADJ	BIT(6)
+#define TPS65023_REG_CTRL2_DCDC2	BIT(2)
+#define TPS65023_REG_CTRL2_DCDC1	BIT(1)
+#define TPS65023_REG_CTRL2_DCDC3	BIT(0)
+
 /* LDO_CTRL bitfields */
 #define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id)	((ldo_id)*4)
 #define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id)	(0xF0 >> ((ldo_id)*4))
@@ -486,6 +493,10 @@
 	tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2,
 						TPS65023_REG_CTRL2_CORE_ADJ);
 
+	/* Enable setting output voltage by I2C */
+	tps_65023_clear_bits(tps, TPS65023_REG_CON_CTRL2,
+						TPS65023_REG_CTRL2_CORE_ADJ);
+
 	return 0;
 
  fail: