diff options
author | Max Krummenacher <max.krummenacher@toradex.com> | 2015-07-27 16:05:36 +0200 |
---|---|---|
committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2017-04-03 15:36:43 +0200 |
commit | 29ff2389ecf7cb4e30924c80b8d42165cf306936 (patch) | |
tree | 9663840e378c806c9d2d80e0f9a3619e14645404 /drivers/regulator | |
parent | 94a53ed03961218fb89fe10f58afaba0219ae1e8 (diff) |
colibri-imx6: use stopmode for poweroff
After the system has been shutdown with PMIC_ON_REQ and VCC_BATT is supplied
from a battery it will never restart either by RESET or power cycle.
So use the PMIC_STBY_REQ after shutdown to switch off power rails.
Conflicts:
arch/arm/mach-imx/pm-imx6.c
drivers/regulator/pfuze100-regulator.c
(cherry-picked from commit c8b186404065c4502b485820ad4a51515924795c)
(cherry-picked from commit ee4c5c4da3b32f65528a2d523ca4bce574dee3c5)
Signed-off-by: Max Krummenacher <max.krummenacher@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Diffstat (limited to 'drivers/regulator')
-rw-r--r-- | drivers/regulator/pfuze100-regulator.c | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/drivers/regulator/pfuze100-regulator.c b/drivers/regulator/pfuze100-regulator.c index e8099f4c2738..6fee588d3190 100644 --- a/drivers/regulator/pfuze100-regulator.c +++ b/drivers/regulator/pfuze100-regulator.c @@ -734,6 +734,78 @@ err_ret: return index; } +static void pfuze100_regulator_shutdown(struct i2c_client *client) +{ + struct pfuze_chip *pfuze_chip; + int ret; + + if (!of_machine_is_compatible("toradex,colibri_imx6dl")) + return; + + /* Configure all regulators to off on PMIC standby. For Colibri iMX6 + * we use the PMIC_STBY_REQ after shutdown, as the PMIC_ON_REQ signal + * together with VCC_BATT supplied from a battery leads to a + * nonbooting system. + * After the system has been shutdown with PMIC_ON_REQ it will never + * restart either by RESET or power cycle. + */ + pfuze_chip = i2c_get_clientdata(client); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW1ABVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW1CVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW3AVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SW3BVOL + PFUZE100_MODE_OFFSET, + 0x0f, 4); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_SWBSTCON1, + 0x60, 0); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN2VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN4VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN5VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); + + ret = regmap_update_bits(pfuze_chip->regmap, + PFUZE100_VGEN6VOL, + 0x20, 0x20); + if (ret < 0) + dev_err(pfuze_chip->dev, "stby vgen config failed %d\n", ret); +} + static const struct dev_pm_ops pfuze_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(pfuze_suspend, pfuze_resume) }; @@ -747,6 +819,7 @@ static struct i2c_driver pfuze_driver = { .pm = &pfuze_pm_ops, }, .probe = pfuze100_regulator_probe, + .shutdown = pfuze100_regulator_shutdown, }; module_i2c_driver(pfuze_driver); |