From: Axel Lin <axel.lin@ingics.com>
Date: Wed, 26 Jun 2019 21:26:32 +0800
Subject: regulator: lm363x: Fix n_voltages setting for lm36274
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Git-commit: 962f170d9344e5d9edb3903971c591f42d55e226
Patch-mainline: 5.4-rc1
References: bnc#1151927 5.3.4

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>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
 drivers/regulator/lm363x-regulator.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- 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 lm363
 		.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 lm363
 		.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 lm363
 		.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,