regulator: rt5033: Fix n_voltages settings for BUCK and LDO

[ Upstream commit 6549c46af8551b346bcc0b9043f93848319acd5c ]

For linear regulators, the n_voltages should be (max - min) / step + 1.

Buck voltage from 1v to 3V, per step 100mV, and vout mask is 0x1f.
If value is from 20 to 31, the voltage will all be fixed to 3V.
And LDO also, just vout range is different from 1.2v to 3v, step is the
same. If value is from 18 to 31, the voltage will also be fixed to 3v.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Reviewed-by: ChiYuan Huang <cy_huang@richtek.com>
Link: https://lore.kernel.org/r/20210627080418.1718127-1-axel.lin@ingics.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/include/linux/mfd/rt5033-private.h b/include/linux/mfd/rt5033-private.h
index f812105..f2271bf 100644 (file)
--- a/include/linux/mfd/rt5033-private.h
+++ b/include/linux/mfd/rt5033-private.h
@@ -200,13 +200,13 @@ enum rt5033_reg {
 #define RT5033_REGULATOR_BUCK_VOLTAGE_MIN              1000000U
 #define RT5033_REGULATOR_BUCK_VOLTAGE_MAX              3000000U
 #define RT5033_REGULATOR_BUCK_VOLTAGE_STEP             100000U
-#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM         32
+#define RT5033_REGULATOR_BUCK_VOLTAGE_STEP_NUM         21
 
 /* RT5033 regulator LDO output voltage uV */
 #define RT5033_REGULATOR_LDO_VOLTAGE_MIN               1200000U
 #define RT5033_REGULATOR_LDO_VOLTAGE_MAX               3000000U
 #define RT5033_REGULATOR_LDO_VOLTAGE_STEP              100000U
-#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM          32
+#define RT5033_REGULATOR_LDO_VOLTAGE_STEP_NUM          19
 
 /* RT5033 regulator SAFE LDO output voltage uV */
 #define RT5033_REGULATOR_SAFE_LDO_VOLTAGE              4900000U