From: Axel Lin <axel.lin@xxxxxxxxxx> [ Upstream commit 962f170d9344e5d9edb3903971c591f42d55e226 ] 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@xxxxxxxxxx> Link: https://lore.kernel.org/r/20190626132632.32629-2-axel.lin@xxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/regulator/lm363x-regulator.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/regulator/lm363x-regulator.c b/drivers/regulator/lm363x-regulator.c index e4a27d63bf901..4b9f618b07e97 100644 --- 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, -- 2.20.1
