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regulator: mt6358: Add output voltage fine tuning to fixed regulators

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The "fixed" LDO regulators found on the MT6358 and MT6366 PMICs have
either no voltage selection register, or only one valid setting.
However these do have a fine voltage calibration setting that can
slightly boost the output voltage from 0 mV to 100 mV, in 10 mV
increments.

Add support for this by changing these into linear range regulators.
Some register definitions that are missing are also added.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Acked-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/20230913082919.1631287-3-wenst@chromium.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Chen-Yu Tsai 2023-09-13 16:29:17 +08:00 committed by Mark Brown
parent 7442edec72
commit cf08fa74c7
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 19 additions and 2 deletions
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15
drivers/regulator/mt6358-regulator.c
View File

@ -123,10 +123,13 @@ struct mt6358_regulator_info {
.type = REGULATOR_VOLTAGE, \
.id = MT6358_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = 1, \
.n_voltages = 11, \
.vsel_reg = MT6358_##vreg##_ANA_CON0, \
.vsel_mask = GENMASK(3, 0), \
.enable_reg = enreg, \
.enable_mask = BIT(enbit), \
.min_uV = volt, \
.uV_step = 10000, \
}, \
.status_reg = MT6358_LDO_##vreg##_CON1, \
.qi = BIT(15), \
@ -219,10 +222,13 @@ struct mt6358_regulator_info {
.type = REGULATOR_VOLTAGE, \
.id = MT6366_ID_##vreg, \
.owner = THIS_MODULE, \
.n_voltages = 1, \
.n_voltages = 11, \
.vsel_reg = MT6358_##vreg##_ANA_CON0, \
.vsel_mask = GENMASK(3, 0), \
.enable_reg = enreg, \
.enable_mask = BIT(enbit), \
.min_uV = volt, \
.uV_step = 10000, \
}, \
.status_reg = MT6358_LDO_##vreg##_CON1, \
.qi = BIT(15), \
@ -476,8 +482,13 @@ static const struct regulator_ops mt6358_volt_table_ops = {
.get_status = mt6358_get_status,
};
/* "Fixed" LDOs with output voltage calibration +0 ~ +10 mV */
static const struct regulator_ops mt6358_volt_fixed_ops = {
.list_voltage = regulator_list_voltage_linear,
.map_voltage = regulator_map_voltage_linear,
.set_voltage_sel = regulator_set_voltage_sel_regmap,
.get_voltage_sel = mt6358_get_buck_voltage_sel,
.set_voltage_time_sel = regulator_set_voltage_time_sel,
.enable = regulator_enable_regmap,
.disable = regulator_disable_regmap,
.is_enabled = regulator_is_enabled_regmap,

6
include/linux/mfd/mt6358/registers.h
View File

@ -262,6 +262,12 @@
#define MT6358_LDO_VBIF28_CON3 0x1db0
#define MT6358_VCAMA1_ANA_CON0 0x1e08
#define MT6358_VCAMA2_ANA_CON0 0x1e0c
#define MT6358_VFE28_ANA_CON0 0x1e10
#define MT6358_VCN28_ANA_CON0 0x1e14
#define MT6358_VBIF28_ANA_CON0 0x1e18
#define MT6358_VAUD28_ANA_CON0 0x1e1c
#define MT6358_VAUX18_ANA_CON0 0x1e20
#define MT6358_VXO22_ANA_CON0 0x1e24
#define MT6358_VCN33_ANA_CON0 0x1e28
#define MT6358_VSIM1_ANA_CON0 0x1e2c
#define MT6358_VSIM2_ANA_CON0 0x1e30