diff options
Diffstat (limited to 'drivers/regulator/bd718x7-regulator.c')
| -rw-r--r-- | drivers/regulator/bd718x7-regulator.c | 33 |
1 files changed, 29 insertions, 4 deletions
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c index 3a47e0372e77..b8dcdc21dc22 100644 --- a/drivers/regulator/bd718x7-regulator.c +++ b/drivers/regulator/bd718x7-regulator.c @@ -9,6 +9,7 @@ #include <linux/kernel.h> #include <linux/mfd/rohm-bd718x7.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/platform_device.h> #include <linux/regulator/driver.h> #include <linux/regulator/machine.h> @@ -130,6 +131,7 @@ static struct regulator_ops bd718xx_buck_regulator_nolinear_ops = { .disable = regulator_disable_regmap, .is_enabled = regulator_is_enabled_regmap, .list_voltage = regulator_list_voltage_table, + .map_voltage = regulator_map_voltage_ascend, .set_voltage_sel = bd718xx_set_voltage_sel_restricted, .get_voltage_sel = regulator_get_voltage_sel_regmap, .set_voltage_time_sel = regulator_set_voltage_time_sel, @@ -1007,7 +1009,7 @@ static const struct bd718xx_regulator_data bd71837_regulators[] = { }; struct bd718xx_pmic_inits { - const struct bd718xx_regulator_data (*r_datas)[]; + const struct bd718xx_regulator_data *r_datas; unsigned int r_amount; }; @@ -1017,11 +1019,11 @@ static int bd718xx_probe(struct platform_device *pdev) struct regulator_config config = { 0 }; struct bd718xx_pmic_inits pmic_regulators[] = { [BD718XX_TYPE_BD71837] = { - .r_datas = &bd71837_regulators, + .r_datas = bd71837_regulators, .r_amount = ARRAY_SIZE(bd71837_regulators), }, [BD718XX_TYPE_BD71847] = { - .r_datas = &bd71847_regulators, + .r_datas = bd71847_regulators, .r_amount = ARRAY_SIZE(bd71847_regulators), }, }; @@ -1053,13 +1055,36 @@ static int bd718xx_probe(struct platform_device *pdev) BD718XX_REG_REGLOCK); } + /* At poweroff transition PMIC HW disables EN bit for regulators but + * leaves SEL bit untouched. So if state transition from POWEROFF + * is done to SNVS - then all power rails controlled by SW (having + * SEL bit set) stay disabled as EN is cleared. This may result boot + * failure if any crucial systems are powered by these rails. + * + * Change the next stage from poweroff to be READY instead of SNVS + * for all reset types because OTP loading at READY will clear SEL + * bit allowing HW defaults for power rails to be used + */ + err = regmap_update_bits(mfd->regmap, BD718XX_REG_TRANS_COND1, + BD718XX_ON_REQ_POWEROFF_MASK | + BD718XX_SWRESET_POWEROFF_MASK | + BD718XX_WDOG_POWEROFF_MASK | + BD718XX_KEY_L_POWEROFF_MASK, + BD718XX_POWOFF_TO_RDY); + if (err) { + dev_err(&pdev->dev, "Failed to change reset target\n"); + goto err; + } else { + dev_dbg(&pdev->dev, "Changed all resets from SVNS to READY\n"); + } + for (i = 0; i < pmic_regulators[mfd->chip_type].r_amount; i++) { const struct regulator_desc *desc; struct regulator_dev *rdev; const struct bd718xx_regulator_data *r; - r = &(*pmic_regulators[mfd->chip_type].r_datas)[i]; + r = &pmic_regulators[mfd->chip_type].r_datas[i]; desc = &r->desc; config.dev = pdev->dev.parent; |