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regulator: pbias: Select voltage table based on max-voltage

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Reference manuals of OMAP5x and DRA7x have been updated to reflect
the PBIAS regulator max-voltage as 3.3V instead of 3.0V, while OMAP3x
and OMAP4x are still quoting 3.0V. So, as of now, the pbias driver
needs to support both 3.0V and 3.3V IO voltage based on the max-voltage
supported by the PBIAS regulator.

Document reference:
SWPU249AF - OMAP543x Technical reference manual - August 2016
SPRUI30C – DRA75x, DRA74x Technical reference manual November 2016

Tested on:
DRA75x PG 2.0 REV H EVM

Signed-off-by: Ravikumar Kattekola <rk@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ravikumar Kattekola 2017-08-31 15:48:45 +05:30 committed by Mark Brown
parent 5771a8c088
commit 27eae9d4b9
1 changed files with 18 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/regulator/pbias-regulator.c
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@ -34,6 +34,8 @@ struct pbias_reg_info {
u32 vmode;
unsigned int enable_time;
char *name;
const unsigned int *pbias_volt_table;
int n_voltages;
};
struct pbias_regulator_data {
@ -49,11 +51,16 @@ struct pbias_of_data {
unsigned int offset;
};
static const unsigned int pbias_volt_table[] = {
static const unsigned int pbias_volt_table_3_0V[] = {
1800000,
3000000
};
static const unsigned int pbias_volt_table_3_3V[] = {
1800000,
3300000
};
static const struct regulator_ops pbias_regulator_voltage_ops = {
.list_voltage = regulator_list_voltage_table,
.get_voltage_sel = regulator_get_voltage_sel_regmap,
@ -69,6 +76,8 @@ static const struct pbias_reg_info pbias_mmc_omap2430 = {
.vmode = BIT(0),
.disable_val = 0,
.enable_time = 100,
.pbias_volt_table = pbias_volt_table_3_0V,
.n_voltages = 2,
.name = "pbias_mmc_omap2430"
};
@ -77,6 +86,8 @@ static const struct pbias_reg_info pbias_sim_omap3 = {
.enable_mask = BIT(9),
.vmode = BIT(8),
.enable_time = 100,
.pbias_volt_table = pbias_volt_table_3_0V,
.n_voltages = 2,
.name = "pbias_sim_omap3"
};
@ -86,6 +97,8 @@ static const struct pbias_reg_info pbias_mmc_omap4 = {
.disable_val = BIT(25),
.vmode = BIT(21),
.enable_time = 100,
.pbias_volt_table = pbias_volt_table_3_0V,
.n_voltages = 2,
.name = "pbias_mmc_omap4"
};
@ -95,6 +108,8 @@ static const struct pbias_reg_info pbias_mmc_omap5 = {
.disable_val = BIT(25),
.vmode = BIT(21),
.enable_time = 100,
.pbias_volt_table = pbias_volt_table_3_3V,
.n_voltages = 2,
.name = "pbias_mmc_omap5"
};
@ -199,8 +214,8 @@ static int pbias_regulator_probe(struct platform_device *pdev)
drvdata[data_idx].desc.owner = THIS_MODULE;
drvdata[data_idx].desc.type = REGULATOR_VOLTAGE;
drvdata[data_idx].desc.ops = &pbias_regulator_voltage_ops;
drvdata[data_idx].desc.volt_table = pbias_volt_table;
drvdata[data_idx].desc.n_voltages = 2;
drvdata[data_idx].desc.volt_table = info->pbias_volt_table;
drvdata[data_idx].desc.n_voltages = info->n_voltages;
drvdata[data_idx].desc.enable_time = info->enable_time;
drvdata[data_idx].desc.vsel_reg = offset;
drvdata[data_idx].desc.vsel_mask = info->vmode;