[PATCH 4.19 025/211] regulator: lm363x: Fix off-by-one n_voltages for lm3632 ldo_vpos/ldo_vneg

[Greg Kroah-Hartman]

From: Axel Lin <axel.lin@xxxxxxxxxx>

[ Upstream commit 1e2cc8c5e0745b545d4974788dc606d678b6e564 ]

According to the datasheet https://www.ti.com/lit/ds/symlink/lm3632a.pdf
Table 20. VPOS Bias Register Field Descriptions VPOS[5:0]
Sets the Positive Display Bias (LDO) Voltage (50 mV per step)
000000: 4 V
000001: 4.05 V
000010: 4.1 V
....................
011101: 5.45 V
011110: 5.5 V (Default)
011111: 5.55 V
....................
100111: 5.95 V
101000: 6 V
Note: Codes 101001 to 111111 map to 6 V

The LM3632_LDO_VSEL_MAX should be 0b101000 (0x28), so the maximum voltage
can match the datasheet.

Fixes: 3a8d1a73a037 ("regulator: add LM363X driver")
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20190626132632.32629-1-axel.lin@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/regulator/lm363x-regulator.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/regulator/lm363x-regulator.c b/drivers/regulator/lm363x-regulator.c
index b615a413ca9f6..27c0a67cfd0e2 100644
--- a/drivers/regulator/lm363x-regulator.c
+++ b/drivers/regulator/lm363x-regulator.c
@@ -33,7 +33,7 @@
 
 /* LM3632 */
 #define LM3632_BOOST_VSEL_MAX		0x26
-#define LM3632_LDO_VSEL_MAX		0x29
+#define LM3632_LDO_VSEL_MAX		0x28
 #define LM3632_VBOOST_MIN		4500000
 #define LM3632_VLDO_MIN			4000000
 
-- 
2.20.1