regulator: lm363x: Fix n_voltages setting for lm36274

According to the datasheet http://www.ti.com/lit/ds/symlink/lm36274.pdf:
Table 23. VPOS Bias Register Field Descriptions VPOS[5:0]:
VPOS voltage (50-mV steps): VPOS = 4 V + (Code × 50 mV), 6.5 V max
000000 = 4 V
000001 = 4.05 V
:
011110 = 5.5 V (Default)
:
110010 = 6.5 V
110011 to 111111 map to 6.5 V

So the LM36274_LDO_VSEL_MAX should be 0b110010 (0x32).
The valid selectors are 0 ... LM36274_LDO_VSEL_MAX, n_voltages should be
LM36274_LDO_VSEL_MAX + 1. Similarly, the n_voltages should be
LM36274_BOOST_VSEL_MAX + 1 for LM36274_BOOST.

Fixes: bff5e8071533 ("regulator: lm363x: Add support for LM36274")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20190626132632.32629-2-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/regulator/lm363x-regulator.c b/drivers/regulator/lm363x-regulator.c
index e4a27d63bf901b8a8c7c046891111ef08714d72e..4b9f618b07e971682a5704c83f78e5632952b6f8 100644 (file)
--- a/drivers/regulator/lm363x-regulator.c
+++ b/drivers/regulator/lm363x-regulator.c
@@ -36,7 +36,7 @@
 
 /* LM36274 */
 #define LM36274_BOOST_VSEL_MAX         0x3f
-#define LM36274_LDO_VSEL_MAX           0x34
+#define LM36274_LDO_VSEL_MAX           0x32
 #define LM36274_VOLTAGE_MIN            4000000
 
 /* Common */
@@ -226,7 +226,7 @@ static const struct regulator_desc lm363x_regulator_desc[] = {
                .of_match       = "vboost",
                .id             = LM36274_BOOST,
                .ops            = &lm363x_boost_voltage_table_ops,
-               .n_voltages     = LM36274_BOOST_VSEL_MAX,
+               .n_voltages     = LM36274_BOOST_VSEL_MAX + 1,
                .min_uV         = LM36274_VOLTAGE_MIN,
                .uV_step        = LM363X_STEP_50mV,
                .type           = REGULATOR_VOLTAGE,
@@ -239,7 +239,7 @@ static const struct regulator_desc lm363x_regulator_desc[] = {
                .of_match       = "vpos",
                .id             = LM36274_LDO_POS,
                .ops            = &lm363x_regulator_voltage_table_ops,
-               .n_voltages     = LM36274_LDO_VSEL_MAX,
+               .n_voltages     = LM36274_LDO_VSEL_MAX + 1,
                .min_uV         = LM36274_VOLTAGE_MIN,
                .uV_step        = LM363X_STEP_50mV,
                .type           = REGULATOR_VOLTAGE,
@@ -254,7 +254,7 @@ static const struct regulator_desc lm363x_regulator_desc[] = {
                .of_match       = "vneg",
                .id             = LM36274_LDO_NEG,
                .ops            = &lm363x_regulator_voltage_table_ops,
-               .n_voltages     = LM36274_LDO_VSEL_MAX,
+               .n_voltages     = LM36274_LDO_VSEL_MAX + 1,
                .min_uV         = LM36274_VOLTAGE_MIN,
                .uV_step        = LM363X_STEP_50mV,
                .type           = REGULATOR_VOLTAGE,